Cars · Market launch · C-Class Cabriolet Model Series A205 ... · This is the documentation that accompanies the T1477E broadcast: ... drive 4MATIC. The C-Class ... Permissible

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Cars ·Market launch · C-Class Cabriolet Model SeriesA205 • AKUBIS® direct special • Final Test ·GoParticipant Document

T1477EAs at 06.07.2016

1511 4555 - . Edition 06.07.2016 38

This document is intended for training purposes only. The exercises performed in the course cannot simply beimplemented in practice without regard to various considerations. Country-specific laws, regulations andspecifications must always be observed.

The training documents are not subject to the ongoing update service. When working at the vehicle, always use themost up-to-date workshop aids (e.g. EPC net, WIS net, DAS, special tools) provided by the manufacturer for thevehicle in question.

Printed in Germany

© 2016 Copyright Daimler AG

Publisher: Mercedes-Benz Global Training

This document, including all its parts, is protected under the laws of copyright. Any commercial processing or userequires the previous written consent of Daimler AG. This applies in particular to reproduction, distribution,alteration, translation, microfilming, and/or processing in electronic systems, including databases and onlineservices.

Note: The term “employee” always refers to both male and female employees.

Table of contents

1 Orientation ............................................................................................................ 11.1 Welcome ........................................................................................................................ 1

2 Dimensional drawing, weights, performance data ................................................. 32.1 Dimensional Drawing ...................................................................................................... 3

2.2 Weights ........................................................................................................................... 5

2.3 Performance data ........................................................................................................... 6

3 Exterior ................................................................................................................. 73.1 Front design ................................................................................................................... 7

3.2 Side design .................................................................................................................... 9

3.3 Rear design .................................................................................................................... 10

4 Cabriolet ............................................................................................................... 114.1 Soft top ........................................................................................................................... 11

4.2 Components, design ....................................................................................................... 14

4.3 Function sequence .......................................................................................................... 18

4.4 AIRCAP and AIRSCARF ................................................................................................... 19

5 Engine, transmission and suspension ................................................................... 225.1 Engine ............................................................................................................................. 22

5.2 Transmission ................................................................................................................... 25

5.3 Suspension ..................................................................................................................... 27

6 Interior .................................................................................................................. 286.1 Equipment ....................................................................................................................... 28

7 SRS ....................................................................................................................... 307.1 SRS ................................................................................................................................. 30

8 Body ...................................................................................................................... 328.1 Body ............................................................................................................................... 32

Table of contents

T1477E <> Participant Document I

Table of contents

II T1477E <> Participant Document

1 Orientation

1.1 WelcomeWelcome to the market launch training course for the C-Class cabriolet A205.

This is the documentation that accompanies the T1477E broadcast:

Cars • Market Launch • C-Class Cabriolet Model Series A205 • AKUBIS® directspecial • Final Test • Go

With the C-Class cabriolet, the C-Class family has been joined by another member:

The sporty cabriolet is based on the successful coupe version of the C-Class and im‐

presses with an expressive appearance, with top down or closed.

The new member of the C-Class family is produced at the location Bremen.

TT_00_00_045472_FA

Classy materials and details fascinate throughout the sporty vehicle interior design

that provides exclusive comfort and space for four people. Intelligently-networked

driver assistance systems and communication systems guarantee entertainment at

the highest level and make the vehicle one of the safest cabriolets in its class. With its

cabriolet-specific features the cabriolet has huge potential to introduce younger, new

customers looking for driving enjoyment to the cabriolet world at Mercedes-Benz.

Orientation 1

Welcome 1.1

T1477E <> Participant Document 1

The most-important advantages of the new C-Class Cabriolet:

• Elegant top-down driving even at low outside temperatures. The automatic draftstop system AIRCAP , the head area heating system AIRSCARF and a fully auto‐matic fabric top meet highest requirements in terms of climate control andnoise comfort. The soft top can be opened and closed up to a vehicle speedof 50 km/h.

• Dynamic, individually selectable driving experience with 5 DYNAMIC SELECTtransmission modes and a wide range of available engine versions with all-wheeldrive 4MATIC.The C-Class cabriolet is the only vehicle among the field of competitors that isequipped with the optional AIRmatic air suspension.

• Enhanced sportiness thanks to clearly noticeable visual differentiation in combi‐nation with the AMG Line (optional)

• Feeling trend-setting comfort – with systems such as COMAND Online and op‐tions such as touchpad , head-up display or Burmester® high-end surroundsound system

TT_00_00_045473_FA

1 Orientation

1.1 Welcome

2 T1477E <> Participant Document

2 Dimensional drawing, weights, performance data

2.1 Dimensional Drawing

TT_00_00_046924_FA

TT_00_00_046922_FA

TT_00_00_046921_FA

TT_00_00_046923_FA

Dimensional drawing for A205 in comparison to C205

A205 (based on C180) C205 (based on C180) Difference

Vehicle length in mm 4686 4686 +/-0

Wheelbase in mm 2840 2840 +/-0

Vehicle height in mm 1409 1405 +4 mm

Vehicle width in mm 1810 1810 +/-0

Vehicle width from outside mirror to outsidemirror, in mm

2016 2016 +/-0

Turning circle in m 11.22 11.22 +/-0

Soft top height (highest point) in mm 1989 - -

Front/rear track width in mm 1563/1546 1563/1546 +/-0

Space between seats at rear in mm 593 603 -10

Headroom at front/rear in mm 1021/914 1023/905 -2/+9

Dimensional drawing, weights, performance data 2

Dimensional Drawing 2.1


Trunk capacity with open/closed soft top inl

285/360 -/400 /-40


2.1 Dimensional Drawing


2.2 Weights

Weights and payloads for A205 in comparison to C205

A205 (based on C180with 6-speed manualtransmission)

C205 (based on C180with 6-speed manualtransmission)

Difference

Curb weight in kg* 1600 1475 +125

Payload in kg 480 480 +/-0

Gross weight in kg 2080 1955 +125

Permissible towing capacity, unbraked 750 740 +/-0

Permissible towing capacity, braked 1400 1400 +/-0

Permissible tongue weight in kg 75 75 +/-0

Tank capacity in l / with reserve in l 41/7.0 41/7.0 +/-0

Curb weight as per Directive 92/21EC (fuel tank filled to 90 %, driver mass of 68 kg

and 7 kg luggage)

Dimensional drawing, weights, performance data 2

Weights 2.2


2.3 Performance data

Performance data for gasoline engines

C180 with9G-TRONIC

C200 with9G-TRONIC

C200 with 9G-TRONIC and4MATIC

C250 with 9G-TRONIC

C300 with9G-TRONIC

C400 with 9G-TRONIC and4MATIC

Engine M274 M276

Displace‐ment in ccm

1595 1991 2996

Output inkW/hp withrpm

115/156 -5300

135/184 -5500

135/184 -5500

155/211 -5500

180/245 -5500

245/333 -5250 - 6000

Torque in Nmat rpm

250/1200 -4000

300/1200 -4000

300/1200 -4000

350/1200 -4000

370/1300 -4000

480/1600 -4000

0-100 km/hin s

8.9 7.8 8.0 6.9 6.4 5.2

Vmax inkm/h

220 233 227 244 250 250

CO2 emis‐sions ing/km

154-146 150-140 171-163 150-140 161-151 189-181

Combinedconsumptionin l/100 km

6.8-6.5 6.6 - 6.2 7.4-7.1 6.6-6.2 7.1-6.7 8.3-8.0

Drag coeffi‐cient

0.31 0.33

Performance data for diesel engines

C220 d with 9G-TRONIC C250 d with 9G-TRONIC

Engine OM651

Displacement in ccm 2143

Output in kW/hp with rpm 125/170 - 3000 - 4200 150/204 - 5500

Torque in Nm at rpm 400/1400 - 2800 500/1600 - 1800

0-100 km/h in s 8.2 7.2

Vmax in km/h 231 243

CO2 emissions in g/km 124-121

Combined consumption in l/100km

4.9-4.6

Drag coefficient 0.28 0.29


2.3 Performance data


3 Exterior

3.1 Front designAs a new entry-level model into the world of cabriolets from Mercedes-Benz, the C-

Class Cabriolet, too, consequently embodies the core of the Mercedes-Benz design

philosophy: Sensuous clarity as a definition of modern luxury. Here, it demonstrates

its own character with a visibly sporty design joined by its youthful and fresh charis‐

ma. With a closed soft top, the two-door cabriolet with its almost identical basic di‐

mensions has a similar silhouette to the C-Class coupe: With its striking front section

with diamond radiator grille, LED high-performance headlamps, long engine hood and

high belt line. The tautly stretched soft top with glass pane flows harmoniously into

the independently designed rear end, which has an extremely sporty appearance on

account of its wide shoulders and flattened LED taillamps.

TT_00_00_046938_FA

TT_00_00_046937_FA

Exterior 3

Front design 3.1


3.1.1 Lines overview

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3.1.2 Comparison of front design - standard equipment P76 | AMG Line P31

Left: Standard equipment P76 | Right: AMG Line P31 TT_00_00_046941_FA

Standard equipment AMG line

Engine hood Mercedes-Benz laurel wreath on engine hood

Grille Diamond radiator grille with black pins Diamond radiator grille with chrome pins

Mercedes star Central star, integrated into radiator grille

Headlamps LED high-performance headlamps (632) as standard

Front skirt Standard equipment with chrome element AMG styling with sporty air inlets andchrome element over entire width

3 Exterior

3.1 Front design


3.2 Side designAs with the coupe, the cabriolet comes with a low-lying greenhouse. It has a dynamic

side line, frameless doors, no B-pillar and fully retractable side windows. The chrome

trim frame on the A-pillar and windshield gives the cabriolet an extremely high-value

and luxurious appearance. The automatic draft stop AIRCAP® is integrated inconspic‐

uously into the frame of the windshield and it is fully retractable.

3.2.1 Comparison of side design - standard equipment P76 | AMG Line P31

Left: Standard equipment P76 | Right: AMG Line P31 TT_00_00_046942_SW


Soft top Fully automatic, in 4 different colors and acoustic soft top optional

Waistline trim strip andwindow frame

Polished aluminum Dull aluminum

Light alloy wheels Standard 17" in 10-spoke design Standard 18" in 5-spoke design

Suspension AGILITY CONTROL suspension with loweredlevel

Sports suspension with Sports Direct-Steersystem

Side skirt panel Standard AMG styling

Brakes Front: Perforated and brake caliper with"Mercedes-Benz" lettering

Exterior 3

Side design 3.2


3.3 Rear designThe cabriolet has an independent rear-end design including the trunk lid. It has a

strong lateral curvature in the area of the longitudinal member and an extremely spor‐

ty expression through the broad shoulders. The full LED rear lamps are two-piece and

have a high-quality visual appearance. Form and function blend here to form a perfect

entity. The reduced, narrow height of the lamps is achieved in a manner similar to that

for the C205 by moving the reflectors into the bumpers. The characteristic design pro‐

vides a high recognition factor even at night. The Mercedes star is located between

the rear lamps. The specified center high-mounted brake lamp is located in the center

of the soft top compartment lid, and perfectly integrated into the chrome trim. The

reflectors are mounted separately above the diffuser at the side lower area of the

bumper.

3.3.1 Comparison of rear design - standard equipment P76 | AMG Line P31

Left: Standard equipment P76 | Right: AMG Line P31 TT_00_00_046945_FA


Rear apron Standard AMG styling in diffuser look

Exhaust tips Chrome element for C180, C220d andC250d

Integrated exhaust tips for C200, C250,C300, C400

Chrome-plated exhaust tips

3 Exterior

3.3 Rear design


4 Cabriolet

4.1 Soft top

TT_77_33_046382_FA

Important properties:

• Fabric top stowable in section of trunk

• Fully automatic fabric top can be operated up to approx. 50 km/h

• Soft-top opening period is approx. 20 s

• Operation using: Cabriolet cluster or vehicle key (with KEYLESS-GO start function(893) or KEYLESS-GO (889))

• Opening and closing movement monitored by 12 limit switches (sensors)

With regard to the soft top in closed condition and top-down driving, extensive and

detailed work has been conducted in the aerodynamic and aeroacoustic areas. This

permits a low aerodynamic drag and a low noise level when the soft top is open as

well as closed.

TT_77_31_045474_FA

The fabric top comes standard with a black cover. A fabric acoustic soft top (code6U1) is available as special equipment.

Cabriolet 4

Soft top 4.1


The fabric acoustic soft top features a multi-layer structure with acoustically effective

damping and sound insulation materials. It ensures better insulation from environmen‐

tal noises and reduction of interior noise. It therefore meets highest climate and noise

comfort requirements.

In addition to the color black, the colors dark brown, dark red and midnight blue are

available for the acoustic soft top version.

TT_77_31_045474_FA

(740)(stand‐ard)

Black fabric top

Alterna‐tive incombina‐tion with(6U1)

Fabric acoustic soft top with enhanced climate andnoise comfort

TT_77_31_045475_FA

(741) Dark brown fabric top

Only incombina‐tion with(6U1)

Fabric acoustic soft top

TT_77_31_045477_FA

(742) Dark red fabric top



TT_77_31_045476_FA

(744) Midnight blue fabric top



4 Cabriolet

4.1 Soft top


The inner headliner is also available in three attractive colors. These are:

• Crystal gray fabric

• Porcelain fabric

• Black fabric

Mercedes-Benz genuine cabriolet soft top cleanerArea of use:

• Cleaning cabriolet soft tops on inside and outside on MB vehicles

Advantages:

• Removes dirt, nicotine, insect bodies, bird lime

• All-season product

• Environmental compatibility and health protection given as per inspection byDaimler specialist departments. The product has been approved by the ma‐terials testing / environmental protection departments.

Use:

• Sweeping off or vacuuming loose dirt.

• Spray on MB cabriolet soft-top cleaner evenly

• Allow to act for 1 – 2 minutes and then wipe with a damp sponge

• Give final rinse using wet sponge, then dry with a cloth

Container part number:

• A001 986 33 71 10 (300 ml)

Composition:

• Contains anionic and non-anionic tensides as well as solutizer

Cabriolet 4

Soft top 4.1


4.2 Components, design

4.2.1 Soft top mechanism

TT_77_33_046381_FA

The soft top canvas is tensioned during the closing procedure by means of a driven

tensioning arm. This means that the soft top compartment lid does not need to pro‐

vide any tensioning force when closing.

The rear window was designed to achieve the best possible visibility to the rear. The

heated rear window made of glass is firmly integrated into the soft top canvas and it is

stored in a controlled manner through the soft top kinematics. The rear window is

firmly attached to the soft top canvas by means of a polyurethane encapsulation. The

inner headliner is fastened all the way round to the rear window.

Soft top drive

Six hydraulic cylinders drive the soft top after the lock on the left and right is opened

by a centrally installed electric drive.

The hydraulic unit is located in the side of the trunk floor on the left.

4 Cabriolet



Hydraulic components P_77_39_235906_FA

1 Soft top actuation hydraulic cylinder 3 Soft top compartment lid hydrauliccylinder

2 Soft top bow hydraulic cylinder

4.2.2 Soft top electrical system

Overview of limit switches P_77_39_236879_FA

Cabriolet 4

Components, design 4.2


A7/5 Soft top control hydraulic unit S84 Soft top control switch

A7/5b1 Soft top control hydraulic unit tem‐perature sensor

S84s4 Draft stop & wind deflector button(288, AIRCAP)

A7/5m1 Soft top control hydraulic unit electricmotor

S84s5 Power windows central operating but‐ton

A7/5y 1,2 Solenoid valves 1 & 2 S84/1, 2 Left/right soft top locked switch

A85/5 Trunk lid lock S84/3 Soft top "open" limit switch

A85/5s1 Trunk lid lock main catch switchS84/6, /7

Left & right soft top bow locked atbottom limit switch

B14 Outside temperature sensor S84/8 Soft top bow "up" limit switch

B100/4 Left trunk partition Hall sensor S84/26 Left soft top compartment lid "up"limit switch

N10/6 Front SAM control unitS84/27,28

Left & right soft top compartment lid"locked" limit switch

N10/8 Rear SAM control unit S84/31 Soft top "closed" limit switch

N22/6 Rear control unit (soft top) S84/34 Soft top lock "open" limit switch

N69/1, /2 Left/right front door control unit S84/35 Soft top lock "locked" limit switch

N73 Electronic ignition lock control unit

Drive units P_77_39_002384_FA

1 Soft top actuation hydraulic cylinder M10/5 Left rear power window motor

2 Soft top bow hydraulic cylinder M10/6 Right rear power window motor

3 Soft top compartment lid hydrauliccylinder

M47/1 Front soft top lock actuator motor

M10/3 Left front power window motor M96/1 Draft stop actuator motor (288, AIR‐CAP)

M10/4 Right front power window motor M96/2 Wind deflector slat actuator motor(288, AIRCAP)

4 Cabriolet



The movements are monitored by 12 limit switches (sensors) that operate contact‐

lessly. Before a function is initiated during an opening/closing sequence, the control

system checks whether the corresponding input signals of the limit switches are

present. If a signal as a prerequisite for a function to be executed is not present, the

soft top stops or does not even start the movement.

Additional signals that are not directly related to the roof sequence are recorded and

also taken into account.

The following signals are monitored for example and used as function requirements:

• Circuit 15 upon actuation via the button in the center console

• Speed signal (less than 50 km/h)

• The actuation of the brake when the vehicle is stationary

• Trunk lid closed

• Remaining luggage compartment partition closed

The rear control unit (soft top) N22/6 actuates additional functions along with the

soft top. These include the following actuations:

• Rear side windows

• Belt extenders

• AIRCAP function

The rear control unit (soft top) N22/6 is located in the trunk on the left behind the

side trim.

Cabriolet 4

Components, design 4.2


4.3 Function sequencePrerequisites

• Ignition key, position 2 (circuit 15)

• Speed <= 50 km/h

• AIRCAP draft stop in lowered position

• Trunk partition closed

• Trunk lid closed

Soft top sequence phases

TT_77_00_045906_FA

Soft top closed and lockedFor operation of soft top switch (press and hold):• Activation of indicator lamp• Open side windows slightly (window prompter

position)• Trunk lid lock is locked

TT_77_00_045908_FA

• Raise soft top bow• Release and raise soft top compartment lid• Release soft top lock

TT_77_00_045907_FA

• Open soft top (intermediate position)

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• Store soft top in soft top compartment• Close and lock soft top compartment lid• Soft top fully closed• Close side windows (not USA)• Warning chime sounds and indicator lamp goes

off• Trunk lid lock now released

4 Cabriolet

4.3 Function sequence


4.4 AIRCAP and AIRSCARF

4.4.1 AIRCAP (288)

AIRCAP slat P_77_25_209131_FA AIRCAP draft stop P_77_25_209231_FA

Air flow with AIRCAP retracted TT_77_25_046030_FA Air flow with AIRCAP extended TT_77_25_046029_FA

Important properties

• Consisting of AIRCAP slat and AIRCAP draft stop

• Operated by using cabriolet-specific control panel on center console

• Reduction of air turbulence for front and rear passengers

• When the system is active, the arc of the flow is extended thereby reducing theair flow and the noise level in the vehicle interior

• Operation at up to 160 km/h possible, above this limit the AIRCAP system re‐mains in the previously set status

Cleaning positionFor cleaning purposes, the wind deflector can be extended even when the soft

top is closed.

Prerequisite:

• Terminal 15 ON

• Soft top closed

Cabriolet 4

AIRCAP and AIRSCARF 4.4


• Parking brake applied

• Press and hold AIRCAP switch

4.4.2 AIRSCARF (403)

TT_91_30_046034_FA P_00_00_266706_FA

Head restraint with air outlet AIRSCARF (CODE 403) R22/5, 6 heating elements for AIRSCARF in left/rightfront seatM4/10, 11 fan motors for AIRSCARF left/right front seat

This head area heating makes top-down driving great fun even when outside tempera‐

tures are low. Air outlets in the head restraints place a pleasantly warm airstream like

an invisible scarf around the throat and neck area of the driver and front passenger.

The air to be heated flows over heating slats that are heated up by a PTC heater boos‐

ter (PTC: Positive Temperature Coefficient). Ventilators then ensure that the required

outflow speed is provided.

The warm air comes out of an opening below the respective head restraint. The AIR‐

SCARF function is controlled by the AIRSCARF control unit N25/7 depending on the

following variables:

• Selected heating level

• Outside temperature

• Soft top status

• Vehicle speed

The AIRSCARF function is operated using the AIRSCARF switch in the corresponding

switch group, seat adjustment (initial status is AIRSCARF deactivated, all LEDs OFF):

• Press once:

– 3 LEDs light up, Stage 3 activated (100 %)

• Press twice:

– 2 LEDs light up, Stage 2 activated (66 %)

• Press three times:

– 1 LED lights up, Stage 1 activated (P33 %)

4 Cabriolet

4.4 AIRCAP and AIRSCARF


• Press four times:

– All LEDs off, AIRSCARF switched off

The switching on of the fan motors is delayed for approx. 7 s. This prevents any cold

air from flowing out immediately after activation.

To ensure that the fan motors start up reliably, they are actuated independently of the

selected heating level for approx. 0.5 s at maximum voltage.

When switched off, the fan motors run on to protect the heating elements against

overheating. This is done for approx. 5 s in the lowest blower setting.

The fan motors and the heating elements are actuated to match the selected heating

level. The rotational speed of the fan motors is also controlled for an opened soft top

depending on the vehicle speed and the outside temperature.

Cabriolet 4

AIRCAP and AIRSCARF 4.4


5 Engine, transmission and suspension

5.1 Engine

5.1.1 Gasoline engine M274

TT_00_00_041239_FA

Various technology modules were used in the M274 tomake it even more efficient and nimble.• Use of homogeneous/stratified direct injection

method depending on fuel grade in the market, incombination with turbocharger

• Quick-switching piezo injectors with multiple injec‐tion

• Demand-based multiple injection

• Electric coolant pump with CO2 reduction potential

• Use of a camshaft adjustment for the M274 with1.6 l displacement

Model variant Model des‐ignation Engine 1

Displacement incm³

Performance in kW/torque in Nm Market launch

C 180 205.440M274 DEH

LA1,595 115/250

09/2016 in ECE +RoW

09/2016 inUSA/CAN

C 200 205.442M274 DES

LA red

1.991

135/300

C 250 205.445M274 DES

LA155/350

C 300 205.448M274 DEH

LA ges.180/370

1Abbreviations - overview:

DEH: Homogeneous direct injection

DES: Stratified direct injection

LA: Turbocharger

red: Derated

ges: Uprated


5.1 Engine


5.1.2 Gasoline engine M276

M276 - AMG model TT_01_00_046019_FA

The 3.0 liter major assembly is used in the standard modeldesignation and was further developed for the AMG Sportmodel by Mercedes-AMG.• Exhaust manifold and turbine housing are cast from

one piece to ensure that the turbo has a compactconstruction and starts-up quickly

• Aluminum cylinder head

• Timing chain drive made from three individual chaindrives

• Two camshaft adjusters for the intake and exhaustside

• Rigid crankcase in all-aluminum design with NANO‐SLIDE-coated cylinder liners

• Compact, very responsive turbocharger with boostpressure control for each cylinder bank

• 3rd generation gasoline direct injection with 200 barfuel pressure and piezo injection nozzles

• Exhaust system features a near-engine mountedthree-way catalytic converter for each cylinder bank

• AMG model with 25 kW more output and 40 Nmmore torque compared to the standard modeldesignation

Model variant Model des‐ignation Engine 1

Displacement incm³

Performance in kW/torque in Nm Market launch

C 400 4MATIC 205.466M276 DEH

LA G2,996

245/48009/2016 in ECE and

RoWAMG C 434MATIC 205.464

M276 DEHLA G AMG

270/520

5.1.3 Diesel engine OM651

TT_00_00_041016_FA

In October 2008, the OM651 was introduced in the C-Class (model series 204). Since then, it has been continu‐ously improved and optimized. Here you can see a fewtechnical highlights of the OM651 engine.• Rear-mounted camshaft drive permits a low profile

and thus contributes to pedestrian protection

• Common rail direct injection permits a system pres‐sure of up to 2,050 bar

• Maximum ignition pressure of up to 200 bar contrib‐utes to high performance and low emissions.

• Compact module of two-stage charging consists of asmall high-pressure and a large low-pressure turbo‐charger

• Various CO2 measures such as switchable oil/cool‐ant pump, high injection pressures, etc.

Engine, transmission and suspension 5

Engine 5.1


Model variantModel

designa‐tion

Engine Displace‐ment in cm³

Performance in kW/torquein Nm Market launch

C 220 d 205.404OM651 2,143

125/40009/2016 in ECE and RoW

C 250 d 205.408 150/500


5.1 Engine


5.2 Transmission

6-speed manual transmission TT_00_00_041244_FA

The new 6-speed manual transmission is used in 2 var‐iants in the C-Class convertible. A 6-speed manual trans‐mission that has a maximum transferable torque of 300 Nmand a 6-speed manual transmission that has a maximumtransferable torque of 440 Nm.• Gear set perfectly matched to the respective engine

variant (gasoline/diesel)

• Convenient driving at low engine speeds due to adap‐ted gear ratio spreads (with diesel engines 7.20 andwith gasoline engines 6.03)

• Additional increase in shift comfort due to new multi‐ple-cone synchronization with a modified friction an‐gle as well as modified carbon layers for the individualgears

9G-TRONIC TT_27_00_041246_FA

The 9G-TRONIC transmission is the first 9-speed automatictransmission world-wide in the premium segment.• Transmission system consists of 4 single planetary

gear sets and 6 actuators (3 clutches and 3 brakes)

• 9 forward gears and 1 reverse gear

• Off-axis main pump with chain drive

• Integrated electric auxiliary oil pump for ECO start-stop and additional functions

• Integrated control unit with sensor system

• Torque converter housing made from die-cast alumi‐num and transmission housing made from pressure-die-cast magnesium (approx. 1 kg less weight thanNAT2)

• Maximum transferable torque of approx. 1,000 Nm

• DIRECT SELECT selector lever and steering wheelshift paddles

AMG Speedshift MCT 7-speed sport transmissionTT_27_10_041348_FA

The AMG SPEEDSHIFT MCT 7-speed sport transmissionimpresses with its dynamics tailored to individual needsand high variability. For its use in the C 63, the MCT trans‐mission was comprehensively revised and now reacts evenfaster.• Optimizations of the transmission hardware and soft‐

ware

• Double clutching and RACE START function

• Spontaneous multiple downshifts with double clutch‐ing to permit load-free downshifts.

• 7 gears and 1 reverse gear

• Multi-Clutch Technology

• Wet clutch in oil bath instead of torque converter

• Very low weight (83.2 kg incl. oil charge)

• Two-stage torsional damper


Transmission 5.2


Engine/transmission overview

Model Standard transmission Optional transmission

C 180 (205.440) 6-speed manual transmission with300 Nm

9G-TRONIC

C 200 (205.442) 6-speed manual transmission with300 Nm

9G-TRONIC

C 200 4MATIC (205.443) 9G-TRONIC -

C 250 (205.445) 9G-TRONIC -

C 300 (205.448) 9G-TRONIC -

C 400 4MATIC (205.466) 9G-TRONIC -

Mercedes-AMG C 43 4MATIC(205.464) 9G-TRONIC

-

Mercedes-AMG C 63 (205.486) AMG Speedshift MCT 7-speed sporttransmission

-

Mercedes-AMG C 63 S (205.487) AMG Speedshift MCT 7-speed sporttransmission

-

C 220 d (205.404) 6-speed manual transmission with440 Nm

9G-TRONIC

C 220 d 4MATIC (205.405) 9G-TRONIC -

C 250 d (205.308) 9G-TRONIC -


5.2 Transmission


5.3 Suspension

Overview of suspension variants

Code Equipment Remarks

677AGILITY CONTROL suspension with selectivedamping system and lowering

Standard for all model designations (except AMG)

486

Lowered sports suspension and Sports Direct-Steer system

Standard in AMG Line (P31)

Can be ordered as an option for all model designations(except AMG model designation)Only in combination with 18" and 19" wheels andmixed tires

Lowered center of gravity as well as more taut tuning ofsuspension and dampening

483 AIRmatic dynamic handling package Optional for all model designations (except AMG)

488 AMG RIDE CONTROL sports suspension Only for AMG model designations

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AIRmatic vehicle dynamics packageFeatures:• Contains 4 air bellows with a 1-chamber system

• Levels are adjusted in 3 stages (-15 mm, 0 mm and+25 mm)

– Vehicle is raised for increased ground clear‐ance using a button in the center console

– Vehicle is lowered to -15 mm at higherspeeds to increase driving stability and to re‐duce aerodynamic drag.

• Additionally, the comfort direct steering (213) andthe AGILITY-SELECT switch (B59) are activated.

• 2 separate valves on each shock absorber permit acontinuously adjustable rebound and compressionstage

– The best possible dampening is always setvia acceleration sensors on the body and fur‐ther parameters.

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AMG RIDE CONTROL sports suspensionAn AMG front axle with independent steering knuckles,wheel bearings and AMG-specific elastokinematics is in‐stalled in AMG model designations.Features:• High driving pleasure due to extensive responsive‐

ness, high grip level and maximum traction

• AMG-specific kinematics and elastokinematics withnewly developed components

• Very high camber stability during dynamic cornering

• The dampening setting for each separate wheel iscontrolled individually

• 4-link front axle and an independent multilink rearsuspension

The sports suspension contains a 3-stage adjustmentdamping (Comfort, Sport and Sport+).

In addition, a 3-stage AMG Sport speed-sensitive powersteering is also installed.


Suspension 5.3


6 Interior

6.1 Equipment

Standard interior equipment (P75) TT_68_00_047007_FA AMG line interior (P29) TT_68_00_047008_FA

Comparison of standard equipment for interior (P75) | AMG Line Interior (P29)

Seats • Seats in integral design

• ARTICO imitation leather/black Norwichfabric

• Seats in integral design

• ARTICO imitation leather/DINAMICA micro‐fiber

Steeringwheel

• Multifunction steering wheel

• Black leather

• 3-spoke design

• Multifunction sport steering wheel

• Black leather

• 3-spoke design, flattened at bottom

• Deeply embossed grip area

Instrumentpanel

Black instrument panel and belt line Horizontal trim piece in longitudinal section (alsoin door area)

Center con‐sole

• Black center console

• Piano-lacquer look

Trim piece in ash tree wood - open pored

Inner headlin‐er

Crystal gray fabric Black fabric

Other • Air outlet nozzles in silver chrome and Nür‐burg silver

• AMG sports pedal assembly

• Floor mats with AMG lettering

• Interior lights package (876)

• Belt extender (U02)

Special equipment

Climate control 580: THERMATIC with 2 climate zones - standard (except C180: THERMATIC with 1climate zone (code 579) is standard here)

EASY-ENTRY system 121: EASY-ENTRY system for easier entrance to the rear seats - standard

Belt extenders U02: Belt extender can be activated using control button and ignition key in position 1or 2 - standard

Cabriolet Comfort package P50: Consists of AIRCAP, AIRSCARF and remaining luggage compartment partition - formore details see chapter on "Cabriolet" - optional

6 Interior

6.1 Equipment


Manual remaining luggagecompartment partition

711: To open the soft top, the remaining luggage compartment partition must beclosed. When the soft top is closed, the trunk can be extended to a capacity of 360 lit‐ers - standard

Interior 6

Equipment 6.1


7 SRS

7.1 SRS

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1 Roll-over protection system - standard

• 2 roll bars protect occupants in the rear in the event of a rollover

• Numerous crash sensors are used to activate the pyrotechnically-driven roll bars when a specific trigger‐ing threshold is exceeded

2 Sidebag in rear (shown here on left) - optional

• Part of Rear Seat Safety Package (298) - optionally available for ordering

• Consists of sidebag in rear at left/right as well as adaptive belt force limiters

• Sidebags contribute to protecting the thorax area of rear occupants in the event of a side impact

• Triggering occurs when the SRS control unit and the lateral acceleration sensors detect correspondingacceleration or deceleration values

3 Acceleration sensor (shown on left) - standard

• Enables a faster reaction time, even before the impulse arrives at the SRS control unit

• Located on stable vehicle structure, in this case, on the B-pillar

• Acceleration value is used for calculation, triggering of restraint systems is still performed by the SRScontrol unit

4 Pressure sensor (shown on left door) - standard

• Together with the SRS control unit, it enables conclusions to be made about the crash intensity, in par‐ticular with regard to soft molded parts

• Located in the door behind the door trim

• Pressure generated in an accident event is recorded in the "enclosed area (door)"

5 Sidebag (Thorax, pelvis bag) for driver and front passenger (shown on driver's side) - standard

• In event of side impact it protects the upper torso and pelvic area.

7 SRS

7.1 SRS


6 Headbag for driver and passenger side - standard

• Integrated in cabriolet-specific manner into door

• Longer idle time (up to approx. 10 s) after triggering to reduce any head injuries in the event of a rollover

• Can reduce the risk of penetrating splinters

7/8 Driver airbag and front passenger airbag

• Protects the head and chest area in the event of frontal impact

9 SRS control unit

• Central unit - all signals are collected here

• Decides about triggering of pyrotechnical unit

10 Kneebag for driver's side - optional (294)

• Protects legs in the event of collision

• Also stabilizes the body

11/12 Actuator on engine hood hinge / sensor system for pedestrian protection - standard

• Components of pedestrian protection with active engine hood

• Silicon hose with fluid filling and 2 pressure sensors at both ends

• Monitoring of an impact with a pedestrian

• In the event of an impact at between 25 - 55 km/h the engine hood is raised by approx. 80 mm

• Reduction of impact intensity for upper torso / head and simultaneous increase in distance to solid com‐ponents below the engine hood

13 Acceleration sensor (shown on left and right) - standard

• Enables a faster reaction time, even before the impulse arrives at the SRS control unit

• Located on stable vehicle structure, in this case, on the front crossmember

• Acceleration value is used for calculation, triggering of restraint systems is still performed by the SRScontrol unit

SRS 7

SRS 7.1


8 Body

8.1 BodyThe C-Class cabriolet (A205) is based on the MRA platform (Mercedes-Rear-Wheel-

Drive Architecture). This shows the comparison to the C205. Modifications to the ve‐

hicle shell are compensating for the missing connection between the B-pillar and the

roof frame assembly here.

The properties listed below must also be ensured in the convertible (A205):

• Durability

• Crash resistance

• Torsional stiffness

• Vibration characteristics

To achieve values comparable with the sedan or the coupe, the Cabriolet has had

modifications made to its body shell.

Floor assembly of convertible vs. coupe TT_00_00_046113_FA

The main floor has been taken over from the sedan. The modifications of the floor as‐

sembly are shown in the picture. The floor assembly of the sedan as a basis is light

gray (W205). To the left in the picture, in a darker color, you can see the modification

scopes on the convertible (A205). To the right in the picture, in a darker color, you can

see the coupe-specific (C205) components.

They include:

• Reinforcement in the tunnel range

• Reinforcement on rear seat cross member

• Rear floor

8 Body

8.1 Body


– Rear-end floor

– Support structure for mounting the roll bars

– Reinforcement of inner sidewall (bolted cast aluminum parts)

– Wheel wells

– Multifunction recess made from cast aluminum

Detachable parts, sidewall, roof - comparison between C205 - A205

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To compensate for the loss of stiffness due to the missing roof structure, the areas of

the side wall were modified to meet the requirements. The adaptations include,

among others:

• Thicker material in the entrance rocker panel

• Tubular reinforcements in the A-pillar

• Reinforcements at the ends of the B-pillar

• Bolted reinforcement between inner sidewall and roll bar mount

• Wheel well, adapted to missing C-pillar

Body 8

Body 8.1


1511 4555 - . Edition 06.07.2016 38

Documents

Cars · Market launch · C-Class Cabriolet Model Series A205 ... · This is the documentation that accompanies the T1477E broadcast: ... drive 4MATIC. The C-Class ... Permissible