2007 MERCEDES-BENZ C230 child

338 Practical hints
What to do if …
Display messagePossible cause/
consequencePossible solution
Monitor the 56indicator lamp on the center console (page 27) and the mul-
tifunction display in the instrument cluster (
page 24) for the following:
With the seat unoccupied and the ignition turned on,

the 56indicator lamp on the center console should illuminate and remain
illuminated, indicating that the OCS (
page 64) has deactivated the air bag.

the message Front-pass. airbag enabled See Operator’s Manual or the mes-
sage
Front-pass. airbag disabled See Operator’s Manual should not appear
in the multifunction display at any time the seat is unoccupied. Wait at last 60 sec-
onds for the system to complete the necessary check cycles and to make sure nei-
ther message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again. Depend-
ing on the front passenger classification sensed by the OCS (
page 64), the
56indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the system
checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!G
If the 56indicator lamp remains
out even after performing the above correc-
tive steps, do not have any children 12 years
old and under and other small individuals use the front passenger seat until the sys-
tem has been repaired.

366 Practical hints
Replacing SmartKey batteries
If the batteries in the SmartKey are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an
authorized Mercedes-Benz Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.SmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key from the
SmartKey (
page 361).
1Mechanical key
2Battery compartment
Insert mechanical key1 into the
opening.
Press mechanical key1 in direction of
arrow.
The battery compartment2 is un-
latched.
Pull battery compartment2 out of the
housing.
3Batteries
4Contact spring
Remove the batteries3.
Using a lint-free cloth, insert new
batteries3 under the contact
springs4 with the positive terminal
(+) side facing up.
Return battery compartment2 into
housing until it locks into place.
Slide mechanical key 1 back into the
SmartKey.
Check the operation of the SmartKey.
Warning!G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make sure
they are clean and free of lint.
iWhen replacing batteries, always replace
both batteries of both SmartKeys.
The required replacement batteries are available
at any Mercedes-Benz Center.

369 Practical hints
Replacing bulbs
Notes on bulb replacement

Only use 12 volt bulbs of the same type
and with the specified watt rating.

Switch lights off before changing a bulb
to prevent short circuits.

Always use a clean lint-free cloth when
handling bulbs.

Your hands should be dry and free of oil
and grease.

If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Center.
Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center:

Additional turn signals in the exterior
rear view mirrors

High mounted brake lamp

Xenon* lamps

Front fog lamps

Front side marker lamps
Warning!G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before
changing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you

touch or move it when hot

drop the bulb

scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
!Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the
vehicle. Only have the LEDs replaced by an
authorized Mercedes-Benz Center.

409 Technical data
Fuels, coolants, lubricants, etc.
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by
Mercedes-Benz.
Please refer to the Factory Approved
Service Products pamphlet, or inquire at
your Mercedes-Benz Center.
Warning!G
Comply with all valid regulations with
respect to handling, storing, and disposing
of service fluids. Otherwise you could
endanger persons or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service fluids from coming into direct
contact with your eyes or any open wounds.
If a service fluid is swallowed, contact a
physician immediately.
ModelCapacityFuels, coolants, lubricants, etc.
Engine with oil filter8.5 US qt (8.0 l)Approved engine oils
Automatic transmissionC 230 (all models)
C280
C 350 (all models)
C2804MATIC
C3504MATIC9.0 US qt (8.5 l)
9.0 US qt (8.5 l)
9.0 US qt (8.5 l)
8.3 US qt (7.8 l)
8.3 US qt (7.8 l)MB Automatic Transmission Fluid
Manual transmissionC 230 Sport
C 350 Sport1.3 US qt (1.2 l)
1.6 US qt (1.5 l)MB Manual Transmission Oil

419 Index
A
ABS 25, 82
Malfunction indicator lamp 322, 323
Messages in display 335
Accelerator position,
automatic transmission 155
Accessory weight 304
Accident
In case of 53
Active head restraints
see Head restraints
Additional turn signals 368
Air bags 59
Children 75
Front passenger front air bag off
indicator lamp 27, 68, 331
Front, Driver 63
Front, Passenger 63
Passenger 63
Safety guidelines 62
Side impact (front and rear*) 64
Window curtain 64Air conditioning refrigerant 412
Air conditioning system
Automatic climate control* 174
Climate control 164
Air conditioning, Cooling
Automatic climate control* 184
Climate control 172
Air distribution
Automatic climate control* 178
Climate control 168
Air pressure see Tire inflation pressure
Air recirculation mode
Automatic climate control* 181
Climate control 170
Air vents, Front
Automatic climate control* 175
Climate control 165Air vents, Rear
Automatic climate control* 186
Climate control 173
Air volume
Automatic climate control* 179
Climate control 168
Alignment bolt (vehicle tool kit) 379
Anticorrosion/antifreeze 417
Antiglare, Rear view mirror 160
Anti-theft systems 89
Anti-theft alarm system* 89
Immobilizer 89
Aquaplaning see Hydroplaning
Armrest 238
Ashtrays 241
Aspect ratio 304
ATF (Automatic transmission fluid) 277
AUDIO menu
Search function 142
AUDIO menu (Control system) 127

421 Index
Brake fluid 412
Checking 273
Message in display 344
Brake lamps
Cleaning lenses 316
Replacing bulbs 373
Brake pads
Message in display 344
Brakes 262
Warning lamp 25, 324
Break-in period 260
Bulbs, replacing see Replacing bulbsC
California retail buyers and lessees,
important notice 11
Cargo area see Trunk
Cargo tie-down rings* 236
Carpets, cleaning 319
Catalytic converter 269
CD changer* 201
CD player* 128, 201
Centigrade see
Temperature display mode 133
Central locking
Automatic 99, 143
From inside 100
Locking/unlocking from inside 100
Switch 100
Certification label 398
Certification label, examples 398
Charcoal filter
Automatic climate control* 183Children in the vehicle 74
Air bags 60
Blocking rear
door window operation 80
Indicator lamp, front
passenger air bag 68, 331
Infant and child restraint systems 74
LATCH-type child seat anchors 79
Occupant Classification System
(OCS) 64
Cigarette lighter 242
Climate control system 164
Control panel,
Automatic climate control 175
Control panel,
Climate control 165
Defrosting, Front 169
Rear window defroster 163
Clock 25, 121
Setting time 136, 137
Cockpit 22
Cold tire inflation pressure 304
Cold weather performance 415
Collapsible wheel chock 358

426 Index
H
Halogen headlamp see Headlamps
Hands-free microphone 29
Hard plastic trim items, cleaning 318
Hazard warning flasher 115
Head restraints 36, 101
Active head restraint 73, 365
Front seat,
Removing and installing 101
Manual seat, Adjusting 36
Power seat*, Adjusting 37
Rear seat, Folding back 102
Rear seat,
Removing and installing 104
Resetting activated
head restraints 365
Head unit
Time synchronization* with 136
Headlamp
cleaning system* 160, 280, 411
Headlamps
Automatic headlamp mode 110
Bi-Xenon* 372
Cleaning lenses 316
Halogen 370
High beam see High beam flasherHigh beam see High beam headlamps
Low beam see Low beam headlamps
Manual headlamp mode 110
Messages in display 349, 350, 351
Replacing bulbs 367
Switch 50, 55
Headliner and shelf below rear window
Cleaning and care of 319
Heated seats* 106
High beam flasher 50, 113
High beam headlamps 50, 113
Indicator lamp 25
Messages in display 350
Replacing bulbs 368, 371
High mounted brake lamp 368
Hood 274
Horn 23
Hot weather performance 415
HVAC see Climate control
Hydroplaning 265I
Identification labels 398
Identification number,
Vehicle (VIN) 398, 399
Ignition 33, 46, 47
Immobilizer 89
Indicator lamps see
Lamps, indicator and warning
Infant and child restraint systems see
Children in the vehicle
Inflation pressure see
Tires, Inflation pressures
Inside door handle 96
Instrument and controls see
Instrument cluster
Instrument cluster 24, 118
Illumination brightness 118
Lamps 330
Lamps in 322–330
Messages in display see
Malfunction display messages
Multifunction display 121
Instrument lighting see Instrument cluster,
Illumination brightness
Instruments and controls see Cockpit

428 Index
SRS 25, 59, 330
Turn signals 25
Language, Setting 134
LATCH-type child seat anchors see
Children in the vehicle
Leather upholstery,
Cleaning and care of 320
License plate lamps
Messages in display 351
Replacing bulbs 368
Light alloy wheels
Cleaning 317
Technical data 404, 405
Light sensor 349
Message in display 349
Lighter see Cigarette lighter
Lighting, Exterior and interior 109
Limp-home mode 159
Loading see Vehicle loading
Loading terminology 304
Loading the vehicle 284
Locator lighting 112, 140
Loss of keys 95
Loss of Service and
Warranty Information Booklet 397Low beam headlamps
Indicator lamp 25
Messages in display 351
Replacing bulbs 368, 370
Switching on 50
Lubricants 409
Technical data 409
Lumbar support* 105
M
Main dimensions 408
Main fuse box
In passenger compartment 392
Main odometer 121
Maintenance 12, 310
Calling up
service indicator display 312
Clearing
service indicator message 311
FSS (Canada vehicles) 310
Maintenance System 310
Resetting service indicator 312
Service indicator message 310
Service term exceeded 312
Vehicles with E85 fuel 415Maintenance System 310
Manual headlamp mode see Headlamps
Manual seat see Seat, Manual 35
Manual transmission 149, 150
Gearshift lever 46, 150
Shift positions 150
Starting the engine 46
Maximum load rating, Tires 305
Maximum loaded vehicle weight 305
Maximum tire inflation pressure 305
MB Tex upholstery,
Cleaning and care of 320
Mechanical key 361
Memory function* see Steering wheel
Menus see Control system
Microphone, Hands-free 29
Minispare wheel see Spare wheel
Mirrors
Adjusting 41
Auto-dimming* 161
Exterior rear view mirror 42
Interior rear view mirror 42, 160
Mobile phone see Telephone*