2008 MERCEDES-BENZ C300 Symbol

405 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
BCheck
Coolant Level
See Operator’s Manu-
alThe coolant level is too low.Add coolant (page 329).
If you have to add coolant frequently, have
the cooling system checked at an autho-
rized Mercedes-Benz Center.
Warning!G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You could be seriously burned.
!Do not ignore the low engine coolant level
warning. Extended driving with the message and
symbol displayed may cause serious engine
damage not covered by the Mercedes-Benz Lim-
ited Warranty.
Do not drive without a sufficient amount of cool-
ant in the cooling system. The engine will over-
heat, causing major engine damage.

406 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
$You are driving with one or more doors
open.
The display symbol shows you which doors
are open.Close the doors.
4Gas Cap LooseA loss of pressure has been detected in the
fuel system. The fuel cap may not be closed
properly or the fuel system may be leaky.Check the fuel cap (page 322).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked at an autho-
rized Mercedes-Benz Center.
Reserve Fuel
LevelThe fuel level has gone below the reserve
mark.Refuel at the next gas station (page 322).
YYou are driving with the hood open.Stop your vehicle as soon as it is safe to do
so.
Close the hood (page 326).
There is otherwise danger of an accident.

415 Practical hints
What to do if …?
When the message Check Engine Oil At
Next Refueling
appears while the engine
is running and at operating temperature,
the engine oil level has dropped to approx-
imately the minimum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, continue to drive to the
nearest service station where the engine
oil should be topped to the required level
with an approved oil specified in the Facto-
ry Approved Service Products pamphlet.
For information on approved engine oils,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Center.
Display Possible cause/consequencePossible solution
ùCheck
Engine Oil
At Next RefuelingThe engine oil level has dropped to approx-
imately the minimum level.Check the engine oil level (page 327) and
add engine oil as required (
page 328).
If you must add engine oil frequently, have
the engine checked for possible leaks.
!The engine oil level warnings should not be
ignored. Extended driving with the symbol dis-
played could result in serious engine damage
that is not covered by the Mercedes-Benz Limit-
ed Warranty.

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