Page 8 of 400

ContentsTechnical data..................................  335
Spare parts service ............................  336
Warranty coverage .............................  337
Loss of Service and Warranty 
Information Booklet......................  337
Identification labels............................  338
Layout of poly-V-belt drive .................  339
C 230 Kompressor Sport..............  339
C 240/C 320 (all models) ............  339
C 32 AMG.....................................  339
Engine ................................................  340
Rims and Tires ...................................  342
Same size tires .............................  343
Mixed size tires ............................  344
Minispare wheel ...........................  345
Electrical system................................  346
Main dimensions................................  347
Weights ..............................................  348Fuels, coolants, lubricants, etc. .........  349
Capacities ....................................  349
Engine oils....................................  352
Engine oil additives ......................  352
Air conditioning refrigerant ..........  352
Brake fluid ....................................  352
Premium unleaded gasoline .........  353
Fuel requirements ........................  353
Gasoline additives ........................  354
Flexible Fuel Vehicles ...................  354
Coolants.......................................  356
Windshield washer and headlamp 
cleaning* system .........................  358
Consumer information .......................  359
Uniform tire quality grading .........  359
Technical terms...............................  361Index.................................................  367 
     
        
        Page 253 of 400

253 Operation
Engine compartment
Closing
Let the hood drop from a height of 
approximately 1ft (30cm).
The hood will lock audibly.
Check to make sure the hood is fully 
closed. 
If you can raise the hood at a point 
above the headlamps, then it is not 
properly closed. Open it again and let it 
drop with somewhat greater force.
Engine oil
The amount of oil your engine needs will 
depend on a number of factors, including 
driving style. Higher oil consumption can 
occur when
the vehicle is new
the vehicle is driven frequently at 
higher engine speeds
Engine oil consumption checks should only 
be made after the vehicle break-in period.
Warning!
G
The engine is equipped with a transistorized 
ignition system. Because of the high voltage 
it is dangerous to touch any components 
(ignition coils, spark plug sockets, diagnos-
tic socket) of the ignition system
with the engine running
while starting the engine
if ignition is “on” and the engine is 
turned manually
Warning!
G
Be careful that you do not close the hood on 
anyone.
iDo not use any special lubricant addi-
tives, as these may damage the drive 
assemblies. Using special additives not 
approved by Mercedes-Benz will 
restrict your warranty entitlement. 
More information on this subject is 
available at any Mercedes-Benz 
Center. 
     
        
        Page 352 of 400

352 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their 
suitability in our engines. Therefore, only 
use engine oils approved by 
Mercedes-Benz. Information on approved 
engine oils is available in the Factory 
Approved Service Products pamphlet, or at 
your authorized Mercedes-Benz Center.Please follow FSS recommendations for 
scheduled oil changes. Failure to do so 
could result in engine damage not covered 
by the Mercedes-Benz Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil. 
They may damage the engine.
Damage or malfunctions resulting from 
blending oil additives are not covered by 
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG 
lubricating oil is used in the air 
conditioning system.Never use R-12 (CFC) or mineral-based 
lubricating oil. Otherwise damage to the 
system will occur.
Brake fluid
During vehicle operation, the boiling point 
of the brake fluid is continuously reduced 
through the absorption of moisture from 
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture 
content can lead to the formation of 
bubbles in the system, thus reducing the 
system’s efficiency.
Therefore, the brake fluid must be 
replaced every two years, preferably in the 
spring.
Only brake fluid approved by 
Mercedes-Benz is recommended. Your 
authorized Mercedes-Benz Center will 
provide you with additional information.
!Always check the oil filler cap 
(page 255) for important information 
pertaining to the engine oil needing to 
meet a specific Mercedes-Benz specifi-
cation (e.g. MB 229.5). If such informa-
tion is printed on the oil filler cap, only 
use an engine oil from the list of ap-
proved engine oils in the Factory Ap-
proved Service Products pamphlet that 
meets the specification indicated on 
the oil filler cap.
Using engine oils of other specification 
may cause the FSS to incorrectly deter-
mine the next service interval and will 
result in engine damage not covered by 
the Mercedes-Benz Limited Warranty. 
     
        
        Page 376 of 400

376 IndexE
Easy-entry/exit feature* 92
Activating 134
Interrupting movement 92, 134
Electrical fuses 332
Electrical system
Technical data 346
Electronic Stability Program see ESP
Emergency call system* 223
Emergency calls
Initiating an emergency call 226
Telephone* 198
With Tele Aid* 224
Emergency operation 
(Limp Home Mode) 147
Emergency operations
Closing sliding/pop-up roof* 309
Locking the vehicle 306
Opening sliding/pop-up roof* 309
Releasing trunk lid from inside 88
Remote door unlock 230
Unlocking the vehicle 305Emergency Tensioning Device see ETD
Emission control 247
Emission control label 338
Ending
A call (telephone*) 139
Engine
Compartment 252
Starting with 
automatic transmission* 44
Starting with 
manual transmission 43
Starting with the SmartKey
Automatic transmission* 44
Manual transmission 43
Technical data 340
Turning off with the SmartKey 52
Engine cleaning 269
Engine compartment 252
Fuse box in 333
Hood 252
Engine malfunction 
indicator lamp 23, 276Engine number 338, 362
Engine oil 253, 352
Adding 255
Additives 352
Checking level 251, 254
Consumption 253
Display messages 254, 291–292
Filler neck
C 230 Kompressor Sport 256
C 240, C 320, and C 32 AMG 256
Messages in display 254, 291–292
Viscosity 362
Engine oil level
Checking 251, 254
ESP 23, 74, 362
Four wheel electronic 
traction system with ESP 77
Messages in display 282–283
Switching off 75
Switching on 76
Synchronizing 282
Warning lamp 277 
     
        
        Page 393 of 400

393 Index
Technical data
Air conditioning refrigerant 352
Brake fluid 352
Coolant 350
Coolants 356
Electrical system 346
Engine oil additives 352
Engine oils 352
Flexible fuel vehicles 354
Fuel requirements 353
Fuels 350
Gasoline additives 354
Lubricants 349
Main dimensions 347
Premium unleaded gasoline 353
Rims and tires 342
Weights 348
Windshield washer 351
Windshield washer and headlamp 
cleaning* system 351, 358Tele Aid* 223
Emergency calls 224
Information 227
Initiating an emergency call 
manually 226
Message in display 299
Remote door unlock 230
Roadside assistance 226
SOS button 226
Stolen vehicle tracking services 230
System self-check 224
Tele Aid System 223, 365
Upgrade signals 229
Telematics* 365
Telephone* 24, 222
Answering a call 139
Dialing a number from 
the phone book 140
Emergency call 198
Ending a call 139
Hands-free microphone 27Loading phone book 140
Message in display 299
Operation 138, 193
Redialing 140
Signal strength 139
Temperature
Display mode 127
Grades of tires 360
Setting interior temperature
Automatic climate control* 165
Climate control 156
Setting units in display 127
Tires 262
Tightening torque 
(Wheel bolts) 321, 365
Tilt
Head restraint
Manual seat 34
Power seat* 36
Time
Setting hours 126
Setting minutes 126