Page 291 of 400
291 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Suggested solution
:
USA only:ADD 1.0 Qt. ENGINE OIL
WHEN NEXT REFUELING!Canada only:ADD 1.0 LITER ENG. OIL
WHEN NEXT REFUELING!
The engine oil level is too low.
Add engine oil (
page 255) and check
the engine oil level (
page 254).
ENGINE OIL LEVEL
STOP, ENGINE OFF!
There is no oil in the engine. There is a
danger of engine damage.
Carefully bring the vehicle to a halt as
soon as possible.
Turn off the engine.
Add engine oil (
page 255) and check
the engine oil level (
page 254).
ENGINE OIL LEVEL
REDUCE OIL LEVEL
You have added too much engine oil.
There is a risk of damaging the engine or
the catalytic converter.
Have oil siphoned or drained off.
Observe all legal requirements with
respect to its disposal.
ENGINE OIL
VISIT WORKSHOP!
It may be that there is water in the engine
oil.
Have the engine oil checked.
Page 292 of 400

292 Practical hintsWhat to do if …When the message
ADD 1.0 Qt. ENGINE
OIL WHEN NEXT REFUELING!
(Canada:
1.0 LITER
) appears while the engine is
running and at operating temperature, the
engine oil level has dropped to
approximately 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, drive to the nearest
service station where the engine oil should
be topped to the required level with an
approved oil.
Display symbol
Display messages
Possible cause
Suggested solution
:
ENGINE OIL LEVEL
VISIT WORKSHOP!
The engine oil has dropped to a critical
level.
Check the engine oil level
(page 254) and add oil as required
(page 255).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
ENGINE OIL SENSOR
VISIT WORKSHOP!
The measuring system is malfunctioning.
Have the measuring system checked
by an authorized Mercedes-Benz
Center.!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Page 298 of 400
298 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
_
STEERING WHEEL ADJ.
LOCK!
The steering column is not properly
locked.
Lock steering column (
page 37).
STEERING OIL
VISIT WORKSHOP!
The steering gear oil level is too low.
There is a danger of steering gear
damage.
Have the system checked by an
authorized Mercedes-Benz Center.
Warning!
G
If the level of steering gear oil in reservoir is
too low, the steering power assistance could
fail. Much greater effort will then be needed
to turn the steering wheel.
Do not add steering oil without checking the
steering system.
Do not drive the vehicle. Have the system
checked at your authorized Mercedes-Benz
Center as soon as possible.
Page 356 of 400

356 Technical dataFuels, coolants, lubricants, etc.Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which
provides:
Corrosion protection
Freeze protection
Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and
corrosion protection.
If the antifreeze mixture is effective
to -22°F (-30°C), the boiling point of the
coolant in the pressurized cooling system
is reached at approx. 266°F (130°C).The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over
protection. Refer to Service Booklet for
replacement interval.
Coolant system design and coolant used
stipulate the replacement interval. The
replacement interval published in the
Service Booklet is only applicable
if MB 325.0 anticorrosion/antifreeze
solution or other Mercedes-Benz approved
products of equal specification (see
Factory Approved Service Products
pamphlet) are used to renew the coolant
concentration or bring it back up to the
proper level.
To provide important corrosion protection,
the solution must be at least 45%
anticorrosion/antifreeze [equivalent to
freeze protection to approx. -22°F
(-30°C)]. If you use a solution that is more than 55%
anticorrosion/antifreeze [freeze
protection to approx. -49°F (-45°C)], the
engine temperature will increase due to
the lower heat transfer capability of the
solution. Therefore, do not use more than
this amount of anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 anticorrosion/antifreeze should
be used to bring it up to the proper level
(have cooling system checked for signs of
leakage). Please make sure the mixture is
in accordance with label instructions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality,
consult your authorized Mercedes-Benz
Center.
Page 372 of 400

372 IndexCenter console 25
Lower part 26
PASS. AIRBAG OFF
indicator lamp 279
Upper part 25
Centigrade
Setting temperature units 127
Central locking
Automatic 90
From inside 91
Switch 91
Switching on/off
(control system) 133
Unlocking from inside 91
Central locking switch 91
Certification label 338
Changing
Batteries (SmartKey) 307
CDs 189
Key setting 133
Charcoal filter 169Charging
Vehicle battery 324
CHECK ENGINE
malfunction indicator lamp 276
Checking
Brake fluid 251
Coolant level 251, 257
Engine oil level 251, 254
Tire inflation pressure 251
Vehicle lighting 251
Child safety 63
Airbags 56
Infant and child restraint
systems 60, 63
LATCH-type child seat anchors 69
Child safety switch see
Blocking of rear door window operation
Child seat anchors
see LATCH-type child seat anchors
Cigarette lighter 221Cleaning
Cloth upholstery 272
Cup holder 271
Gear selector lever 271
Hard plastic trim items 271
Headlamps 148
Headliner and shelf below
rear window 271
Instrument cluster 270
Leather upholstery 271
Light alloy wheels 270
MB Tex upholstery 272
Plastic and rubber parts 272
Seat belts 271
Steering wheel 271
Upholstery 271
Windows 270
Windshield 48
Wiper blades 270
Wood trims 272
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 384 of 400

384 IndexMultifunction display messages
ABS 284
BAS 281
Battery, vehicle 285
Brake fluid 286
Brake pads 286
Coolant 287–289
Cruise control 290
Display 290
Doors 290
Engine oil 291–292
ESP 282–283
Fuel cap 293
Fuel reserve tank 293
Hood 293
Key, SmartKey 293
Lamps, exterior 293–296
Oil 291–292
Parking brake 286
Restraint system 297Seat belts 297
Sliding/pop-up roof* 299
SRS 297
Steering column not
properly locked 298
Steering gear oil level 298
Tele Aid* 299
Telephone* 299
Trunk lid 299
Windshield washer fluid 299
Multifunction steering
wheel 24, 114, 363
Buttons 114
N
Navigation system*
Operating 121
See separate COMAND*
operating instructions
Night security illumination 104
Setting 131O
Occupant safety 54
Airbags 55
Children and airbags 56
Children in the vehicle 63
Fastening the seat belt 40
Infant and child restraint systems 63
LATCH-type child seat anchors 69
Seat belts 40, 58
Odometer, main 23
Oil level see Engine oil level
Oil see Engine oil
One-touch gearshifting 143
Canceling gear range limit 143
Downshifting 143
Upshifting 143
Opening
Ashtray, center console 220
Ashtray, rear seat 221
Cup holder, in front of
seat armrest 217