2008 MERCEDES-BENZ C300 sensor

392 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Shift
to PYou have turned off the engine with the
KEYLESS-GO* start/stop button (Canada only) in
gear selector lever positionN and opened the driv-
er’s door.
or
You have attempted to switch off the engine with the
KEYLESS-GO* start/stop button (Canada only) while
the gear selector lever was in positionR orD.Place the gear selector lever in positionP.
Shift to P or N
To Start EngineYou have attempted to start the engine while the au-
tomatic transmission* was set to position R or D.Move the gear selector lever to position P or N
(
page 140).
Tire Press. Monitor
Inoperative
(USA only)
The TPMS is malfunctioning.Have the TPMS checked at an authorized
Mercedes-Benz Center.
Wheel Sensors Error
Tire Pressure Monitor
Inoperative
(USA only)
There are wheels without appropriate wheel sensors
mounted (e.g. winter tires).Have the TPMS checked at an authorized
Mercedes-Benz Center.
Have the wheel sensors installed at an autho-
rized Mercedes-Benz Center.
Tire Press. Monitor
Currently Unavailable
(USA only)
The TPMS is unable to monitor the tire pressure due
to a nearby radio interference source.As soon as the causes of the malfunction have
been removed, the TPMS automatically be-
comes active again after a few minutes driving.

409 Practical hints
What to do if …?
ITake Your Key
From IgnitionYou have forgotten to remove the
SmartKey.Remove the SmartKey from the starter
switch.
.AUTO Lamp Function
InoperativeThe light sensor is malfunctioning. Daytime
driving lamps are switched on.In the instrument cluster control system, set
lamp operation to manual mode.
Switch on headlamps using the exterior lamp
switch.
Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
Check
Center Brake LampThe high mounted brake lamp is malfunc-
tioning. This message will only appear if all
light emitting diodes have stopped working.Contact an authorized Mercedes-Benz Cen-
ter as soon as possible.
Check
Left Brake LampThe left brake lamp is malfunctioning.Replace the bulb as soon as possible
(
page 436).
Check
Right Brake LampThe right brake lamp is malfunctioning.Replace the bulb as soon as possible
(
page 436).
Display Possible cause/consequencePossible solution

445 Practical hints
Flat tire
Guide the Minispare wheel onto the
wheel hub and push it on.
Insert wheel bolts and tighten them
slightly.
Lowering the vehicle
Lower vehicle by turning crank
counterclockwise until vehicle is
resting fully on its own weight.
Remove the jack.1 - 5 Wheel bolts
6 Wheel wrench
Tighten the five wheel bolts evenly,
following the diagonal sequence
illustrated (1 to 5), until all bolts are
tight. Observe a tightening torque of
96 lb-ft (130 Nm).
Before storing the jack, it should be fully
collapsed, with handle folded in (storage
position).
Store the jack and the other vehicle
tools in the designated storage space
underneath the trunk floor
(
page 420).
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
96 lb-ft (130 Nm).
iVehicles with TPMS (USA only):
Do not activate the tire inflation pressure
monitor (
page 344) until a full size wheel/tire
with functioning sensor has been placed back
into service on the vehicle.

497 Index
L
Labels 462
Certification 462
Emission control information 463
Tire and Loading Information 335
Lamps, exterior 431
Light sensor 409
Lamps, indicator and warning
ABS 27, 59, 374
Air bag Off 40
Battery check lamp (SmartKey with
KEYLESS-GO* 77
Battery check lamp (SmartKey) 72
Brake warning lamp 27
Brakes 376
Engine diagnostics 27, 378
Engine malfunction 27, 378
ESP
®27, 376, 379, 380
Front passenger front air bag off 29,
45, 385, 386
Fuel reserve 380
High beam headlamps 27
Instrument cluster 374–383
Maintenance service indicator 362
Seat belt telltale 27, 380
SRS 27, 382Turn signals 27
Language 193
Language, Setting 168
LATCH-type child seat anchors see
Children in the vehicle
Lever
For cruise control 242
License plate lamps
Messages in display 411
Replacing bulbs 431, 437
Light alloy wheels, Cleaning 370
Light sensor
Message in display 409
Lighter see Cigarette lighter
Lighting 108
Automatic headlamp mode 109
Corner-illuminating front fog
lamps* 112
Daytime running lamp mode 110
Door entry lamps 116
High beam flasher 112
Instrument cluster illumination 148
Interior 114
Manual headlamp mode 108
Trunk 116
Limp-home mode 146Loading see Vehicle loading
Locator lighting 172
Lock button
Door handle (KEYLESS-GO*, Canada
only) 76, 125
Key, SmartKey 70
Key, SmartKey with KEYLESS-GO*
(Canada only) 73
Locking 133
Vehicle in an emergency 425
Locking knob 79
Loss of
Key, Mechanical 79
Key, SmartKey 79
Key, SmartKey with KEYLESS-GO*
(Canada only) 79
Service and Warranty Information
Booklet 461
Low beam headlamps
Replacing bulbs (Bi-Xenon*) 431
Replacing bulbs (Halogen) 431, 433
Lowering
Vehicle 445
Lubricants 476
Lumbar support* 91

498 Index
M
Maintenance 11, 362
Automatic Call (Tele Aid*) 302
Calling up service indicator
display 363
Clearing service indicator
message 362
Maintenance System 362
Resetting service indicator 363
Service indicator message 362
Service term exceeded 363
Vehicles with E85 fuel 483
Manual headlamp mode 108
Manual transmission 136, 137
Gearshift lever 126, 137
Shift positions 137
Starting the engine 127
Maximum load rating, Tires 357
Maximum loaded
vehicle weight 340, 357
Maximum tire
inflation pressure 354, 357
Maximum tire load rating 353
Memory function* (Canada only) 102
Menus see Control systemMessages in display see
Multifunction display messages
Microphone, Hands-free 31
Minispare wheel 422, 471
Mounting 441
Mirrors
Activating exterior rear view mirror
parking position*
(Canada only) 101
Adjusting 97
Auto-dimming* for rear view
mirrors 100
Exterior rear view mirrors 97
Interior rear view mirror 97
Modifications and alterations,
Operating safety 15
MON 478
MP3
Playback options 220
Selecting a folder 219
Selecting a track 219
Multifunction display 151
Changing settings see Control system
menus and Control system sub-
menusMultifunction display messages
ABS 389, 398
Battery, vehicle 399
Brake fluid 400
Brake pads 399
Coolant 402
Coolant level 405
Doors 406
EBP (Electronic Brake
Proportioning) 401
ESP
®389, 397, 398
Fog lamps 410
Front passenger front air bag 393
Fuel cap 406
Gear selector lever 392
Headlamps 411
Hood 406
Key, SmartKey 408
Key, SmartKey with KEYLESS-GO*
(Canada only) 407
Lamps, exterior 409
License plate lamps 411
Light sensor 409
Low tire pressure 418
Parking brake 401
Parking lamps 411