2008 MERCEDES-BENZ C350S roof

395 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Front Passenger
Airbag Enabled
See Operator’s Manu-
alFront passenger front air bag is
activated while driving even
though a child, small individual,
or object below the system’s
weight threshold is on the front
passenger seat, or the front pas-
senger seat is empty. Objects
on the seat or forces acting on
the seat may make the system
sense supplemental weight.Stop the vehicle in a safe location as soon as possible and check the front
passenger seat for the following:
Switch off the ignition (page 82).
Remove child and child restraint from front passenger seat and properly
secure the child in rear seat employing the child restraint if necessary.
Make sure no objects which apply forces to the seat are present (e.g.
objects such as books, briefcases etc. lodged behind or around the
seat, head restraints pushing against roof, etc.). The system may recog-
nize such forces as supplemental weight and sense that an occupant on
the front passenger seat is of a greater weight than actually present.
Keep the seat unoccupied, close the front passenger door and switch
on the ignition (
page 82).
Monitor the
5/indicator lamp right of the instrument cluster
(
page 45) and the multifunction display in the instrument cluster
(
page 151) for the following:
(Continued on next page)

447 Practical hints
Battery
1Filter box
2Clamps
Removing filter box: Release
clamps2.
Remove filter box.
Installing filter box: Insert filter box
properly.
Secure it with clamps2.
Warning!G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and
precautions when handling automotive
batteries (
page 446).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch. Otherwise the
alternator and other electronic components
could be severely damaged.
Have the battery checked regularly at an autho-
rized Mercedes-Benz Center.
Refer to Maintenance Booklet for maintenance
intervals or contact an authorized
Mercedes-Benz Center for further information.
Warning!G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the
risk of acid burns in the event of an
accident.
!Do not connect any consumers directly to
the battery or it will be discharged.

475 Technical data
Main dimensions and weights
Weights
ModelC 300 Sport
C 300 4MATIC Sport
C 350 SportC 3501
1Canada only.
C 350 4MATIC1C 230 4MATIC1
C 230 4MATIC Sport1
Overall vehicle length182.3 in (4 630 mm)182.3 in (4 630 mm)180.6 in (4 586 mm)
Overall vehicle width (exterior
rear view mirrors folded out)79.5 in (2 020 mm)79.5 in (2 020 mm)79.5 in (2 020 mm)
Overall vehicle width (exterior
rear view mirrors folded in)69.7 in (1770 mm)69.7 in (1770 mm)69.7 in (1770 mm)
Overall vehicle height56.3 in (1 429 mm)57.0 in (1 448 mm)57.1 in (1 449 mm)
Wheelbase124.6 in (2 760 mm)124.6 in (2 760 mm)124.6 in (2 760 mm)
Track, front60.4 in (1 533 mm)60.4 in (1 533 mm)60.4 in (1 533 mm)
Track, rear59.6 in (1 514 mm)60.5 in (1 536 mm)60.5 in (1 536 mm)
Max. roof load 220 lb (100 kg)
Max. trunk load220 lb (100 kg)

499 Index
Restraint systems 416
Run Flat Indicator 390
Side marker lamps 412
SRS 416
Tele Aid* 418
TPMS* (Tire Pressure Monitoring Sys-
tem), (USA only) 392, 418
Trunk 419
Turn signals 413
Windshield washer fluid 419
Multifunction steering wheel 28, 152
Button operation 152
N
Navigation system* 158
See separate COMAND* operating
instructions
Neutral gear position,
Automatic transmission* 138, 140
Neutral gear position,
Manual transmission 137
New vehicle break-in 310
Normal occupant weight 357
Number, Vehicle Identification (VIN) 463O
Occupant Classification System see OCS
Occupant distribution 357
Occupant safety 34
Air bags 36
Children and air bags 51
Children in the vehicle 51
Fastening the seat belt 105
Front passenger front air bag off indica-
tor lamp 45
Infant and child restraint systems 51
LATCH-type child seat anchors 55
Seat belts 38, 105
OCS 41
Self-test 45
Oil
Filler neck 328
One-touch gearshifting
Gear selector lever* 145
Operating safety 15
Operating safety (Audio system) 177
Ornamental moldings, Cleaning 367
Outside temperature indicator 27, 149
Outside temperature see Displays
Overhead control panel 31
Override switch 57P
Paintwork, Cleaning 365
Panic alarm
Audible alarm and flashing exterior
lamps 58
Panic button 58
Panorama roof with power tilt/sliding
panel* 276
Cleaning 369
Opening/closing 277
Synchronizing 278
Parcel net in front passenger
footwell 285
Parking 133, 314
Parking brake 129, 134
Message in display 401
Parking lamps
Messages in display 411
Replacing bulbs 431, 434, 436
Parking position* (Canada only)
Exterior rear view mirrors 101
Parts service 460
PASS AIR BAG OFF indicator lamp see
Front passenger front air bag off indica-
tor lamp

500 Index
Passenger compartment 318
Electrical outlet, glove box 293
Electrical outlet, rear seat
ashtray 293
Passenger safety see Occupant safety
Pedals 311
Performance
Cold weather 483
Hot weather 483
Phone* see Telephone*
Plastic parts, cleaning 370
Poly-V-belt drive 464
Layout 464
Potential problems associated with under-
inflated and overinflated tires 347
Power assistance 311
Power folding exterior rear view
mirrors* 98
Power tilt/sliding sunroof 273
Opening/closing 273
Synchronizing 275
Power washer 365
Power windows 120
Blocking of rear window operation 57
Cleaning 368
Opening/closing 120Practical hints 420
Premium unleaded gasoline 478, 481
Problems
While driving 132
With vehicle 16
Product information 9
Production options weight 357
Program mode 151
Program mode see Automatic transmis-
sion*, Automatic shift program
Program mode selector switch*
Automatic shift program 144
Proper use of the vehicle 15
PSI 358
Push-start see Tow-start
R
Radio
Operation 188, 189, 192, 193, 194,
222
Satellite radio*, operation 200
Selecting stations
(Control system) 159
Radio transmitters, control and
operation 319
Range (distance to empty) 157
Reading lamps in the front 115, 116Reading lamps in the rear 116
Rear bench seat, foldable* 281
Rear climate control 268
Rear door window
Blocking operation 57
Rear fog lamp see Fog lamps
Rear lamps see Tail lamps
Rear seat ashtray see Ashtray
Rear seats
Adjustment 85
Head restraints 89
Rear view mirrors see Mirrors
Rear window defroster 256, 265
Recommended inflation pressure 358
Recovery services, Stolen vehicle
(Tele Aid*) 302
Refrigerant, Air conditioning 478, 480
Refueling 322
Regular checks 324
Remote
Door lock with Tele Aid* 302
Door unlock with Tele Aid* 301
Trunk opening/closing* switch 269
Remote control, SmartKey 70
Remote control, SmartKey with
KEYLESS-GO* (Canada only) 73

501 Index
Replacing bulbs 430
Additional turn signals 431
Backup lamps 431, 436
Brake lamps 431
Corner-illuminating front fog
lamp* 431
Fog lamps 431, 436
Headlamp bulbs 432
Headlamps 431
High beam flasher
(Bi-Xenon*) 431, 435
High beam flasher
(Halogen) 431, 433
High beam headlamps
(Bi-Xenon*) 431
High beam headlamps
(Halogen) 431, 433
High mounted brake lamp 431
License plate lamps 431, 437
Low beam headlamps
(Bi-Xenon*) 431
Low beam headlamps
(Halogen) 431, 433
Parking lamps 431, 434, 436
Side marker lamps 431
Standing lamps 431, 434, 436Tail lamps 431, 436
Turn signal lamps 431
Turn signal lamps (Bi-Xenon*) 436
Turn signal lamps (Halogen) 434
Reporting safety defects 17
Reset to factory settings
(Audio system) 193
Residual engine heat and ventilation 266
Restraint systems
Messages in display 416
See Children in the vehicle
See SRS
Reverse gear position, Automatic
transmission* 138, 140
Reverse gear position,
Manual transmission 126
Rims 358
And Tires 467
Tires and wheels 331
Roadside Assistance 12
Roadside Assistance*
Tele Aid* 299
RON 478
Roof rack* 280
Rubber parts, cleaning 370
Run Flat Indicator* (Canada only) 342S
Safety
Driving safety systems 59
Occupant 34
Reporting defects 17
Safety belts see Seat belts
Satellite radio*
Calling SIRIUS Service Center 207
Channel update 207
Operation 200
Selecting program category 203
Showing program info 206
Storing channels 206
Submenu overview 200
Tuning in channels 204
Seat belts 46
Children in the vehicle 51
Cleaning 371
Fastening 46, 105
Force limiter 49
Messages in display 416
Proper use of 47, 106
Safety guidelines 38
Telltale 27, 48, 380
Seating capacity 335

503 Index
SRS 47
Indicator lamp 27, 382
Messages in display 416
Standing lamps 434, 436
Replacing bulbs 431
Standing water, Driving through 318
Starter switch 82
Positions 82
Starting difficulties, Engine 129
Starting, Engine 126
Steering wheel 93, 94
Adjustment, electrical 94
Adjustment, manual 93
Buttons 28
Cleaning 371
Easy entry/exit feature*
(Canada only) 95
Power steering fluid 478
Stolen Vehicle Recovery services 302
Storage compartments 283
Cup holder 287
Front armrest 284
Parcel net 285
Rear armrest 286
Storage compartment in front
armrest 284Storage pockets 286
Storing tires 333
Submenus see Control system submenus
Summer opening feature 123
Sun visors 289
Sunroof see Power tilt/sliding sunroof
Sunshade
Extending/retracting rear window
sunshade 290
Switching
Fuel (Flexible fuel vehicle) 483
Symbols used in this operator’s
manual 14
System settings
Bluetooth
® (Audio system) 192
Display (Audio system) 192
Setting the system language 193
System settings (Audio system)
Menu overview 192
Reset to factory settings 193
Setting the system language 193T
Tachometer 149
Overspeed range 149
Tail lamps
Cleaning lenses 367
Replacing bulbs 431, 436
Tar stains 365
Technical data
Flexible fuel vehicles 482
Tele Aid* 295
Automatic Maintenance Call 302
Call priority 301
Emergency calls 296
Hands-free microphone 31
Information 300
Information button* 300
Initiating an emergency call
manually 298
Messages in display 418
Remote door lock 302
Remote door unlock* 301
Roadside Assistance button* 299,
300
Roadside Assistance* 299
SOS button 298
Stolen Vehicle Recovery

504 Index
services 302
System self-check 296
Telephone* 28, 152
“911” emergency call
(Audio system) 231
Answering/ending a call 163
Hands-free microphone 31
Operation 160
Operation (Audio system) 222
Phone book 162
Redialing 163
Redialing (Instrument cluster control
system) 163
Switching on/off (Audio system) 226
Temperature
Display mode 158
Interior temperature 253
Outside temperature indicator 27
Tires 340
Tightening torque, Wheel bolts 445
Tilt/sliding sunroof see Power tilt/sliding
sunroof
Time 170
TIN 358
Tire and Loading Information
Placard 335Tire Identification Number see TIN
Tire inflation pressure
Air pressure 339, 356
Checking tire pressure electronically,
Tire Pressure Monitoring System
(TPMS), (USA only) 344
Tires 331
And Rims 467
And Wheels 331
Care and maintenance 332
Chains 361
Cleaning 333
Cold tire inflation pressure 356
Direction of rotation 334
Driving instructions 315
Important notes on tire inflation
pressure 340
Inflation pressure 339
Information placard 335
Inspection 332
Load rating 349, 358
Load rating, Maximum 353, 357
Low tire pressure telltale 383
Minispare wheel 422, 471
Ply composition and material
used 358Problems under-/overinflation 339
Retreads 331
Rotating 359
Run Flat Indicator*
(Canada only) 342
Service life 332
Sizes 467
Snow 360
Speed rating 316, 350, 358
Storing 333
Temperature 340, 355
Terminology 356
Tire Pressure Monitoring System
(TPMS)*, (USA only) 344
Total load limit 358
TPMS* (USA only) malfunction
telltale 383
Traction 316, 358
Tread depth 333
Tread depth, Winter 360
Treadwear indicators 358
Vehicle maximum load on 359
Wear pattern 359
Winter 360