Page 358 of 498

357 Practical hints
What to do if …
Problem
Possible cause/consequence
Suggested solution
D
The red coolant warning lamp
comes on when the engine is
running.
There is insufficient coolant in the reservoir.
If this warning lamp comes on frequently,
there is a leak in the cooling system.
If the coolant level is correct, the electric
radiator fan may be broken.
Immediately add coolant to prevent
engine from overheating
(page 297).
Have the cooling system checked.
If the coolant temperature is below
266°F (130°C), you can continue
driving to the nearest authorized
Mercedes-Benz Center.
Avoid high engine loads (e.g. driving
uphill) and stop-and-go driving.
D
The red coolant warning lamp
comes on while driving and you
hear a warning sound.
The coolant temperature has exceeded
266°F (130°C).
Stop as soon as possible and allow
the engine and coolant to cool down.
l
The red distance warning lamp
comes on while driving.
You are too close to the vehicle in front of you
to maintain selected speed.
Apply the brakes immediately to in-
crease the following distance.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously burned.
Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.
Page 380 of 498

379 Practical hints
What to do if …
During severe operation conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display symbol
Display messages
Possible cause/consequence
Possible solution
Ï
Coolant
Stop, engine off
The coolant is too hot.
Stop the vehicle in a safe location.
Only start the engine again after the
message disappears. You could other-
wise damage the engine.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously burned.
Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.
!The engine should not be operated with
the coolant temperature above 248°F
(120°C). Doing so may cause serious
damage which is not covered by the
Mercedes-Benz Limited Warranty.
Page 385 of 498
384 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
A
Reserve fuel
The fuel level has dropped below the re-
serve mark.
Refuel at the next gas station
(page 290).
Check gas cap
See Operator’s Manual
A 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 290).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an
authorized Mercedes-Benz Center.
Y
Hood open
You are driving with the hood open.
Close the hood (
page 293).
Page 415 of 498

414 Practical hintsReplacing bulbsReplacing bulbs for front lamps
1Housing cover for low beam halogen or
Bi-Xenon* headlamp
2Housing cover for high beam head-
lamp/high beam flasher bulb and for
parking and standing lamp bulb3Bulb socket for turn signal lamp bulb
4Bulb holder of high beam bulb
5Bulb socket for parking and standing
lamp bulb
6Bulb holder of low beam bulb
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 134).
Open the hood (
page 293) (except
for side marker lamps).Low beam bulb (halogen headlamps
only)
Turn housing cover1 counterclock-
wise and remove it.
Turn bulb holder6 with the bulb coun-
terclockwise and remove it.
Pull the bulb at its socket out of bulb
holder6.
Insert the new bulb so that its socket
locates in the recess of bulb holder6
and is level to it.
Reinsert bulb holder6 with the bulb in
the lamp and turn clockwise.
Align housing cover1 and turn it
clockwise.
Warning!
G
Do not remove the cover1 for the Bi-Xe-
non* headlamp. 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.
Page 419 of 498
418 Practical hintsReplacing wiper bladesInstalling wiper blades
Slide wiper blade onto wiper arm until
it locks in place.
Rotate wiper blade into position paral-
lel to wiper arm.
Fold the wiper arm backward to rest on
the windshield. Make sure you hold on
to the wiper when folding the wiper arm
back.
!Never open the hood when the wiper
arm is folded forward.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make certain that the wiper blades are
properly installed. Improperly installed
wiper blades may cause windshield
damage.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Center.
Page 487 of 498

486 IndexHood 293
Message in display 384
HVAC see 4-zone automatic climate
control
Hydroplaning 283
I
Identification labels 446
Identification Number, Vehicle (VIN) 446
Ignition 36, 38, 50
Immobilizer 93
Indicator lamps see Lamps, indicator and
warning
Infant and child restraint systems see
Children in the vehicle
Information
About service and warranty 10
Button for Tele Aid 267
Inside door handle 111
Inside rear view mirror
Antiglare 191Installing
Infant and child restraint systems 80
Towing eye bolt 439
Wiper blades 418
Instrument cluster 24, 144, 474
Cleaning 349
Coolant temperature gauge 145
Illumination 144
Multifunction display 147
Outside temperature indicator 146
Interior lighting 141
Delayed switch-off 167
Interior rear view mirror 44
J
Jack 398, 399
Jacking up the vehicle 425
Jump starting 435K
Key, Mechanical 402
Key, SmartKey
Changing batteries 408
Key, SmartKey with KEYLESS-GO*
Changing batteries 409
KEYLESS-GO* 110, 474
Activating ignition with 38
Closing
Trunk 117
Factory setting 107
Global locking 107
Global unlocking 107
Important notes 105
Remote controls 103
Starting the engine 50
Turning off engine 60
Unlocking and opening, trunk 110
Unlocking with 35
Kickdown 180, 474
Kilopascal 333
Page 490 of 498

489 Index
Electro-hydraulic brake system 375,
376
Engine oil 382, 383
ESP
®
368
Fog lamps 387, 388, 389, 390
Hood 384
Light sensor 389
Maintenance service 392
Parking brake 375
Parking lamps 388
Power tilt/sliding sunroof 392
Reserve fuel 384
Seat belts 392
SmartKey with KEYLESS-GO* 385,
386
SRS 393
Taillamps 390
Tele Aid 393
Telephone* 396
Tires 370, 395
Trunk 396
Turn signals 391
Windshield washer fluid 396
Multifunction steering wheel 26, 148,
475
Button operation 148N
Navigation system
See separate COMAND operating
instructions 155
Night security illumination 136
Normal occupant weight 333
O
Occupant distribution 333
Occupant safety 64
Air bags 65
Children and air bags 66
Children in the vehicle 75
Fastening the seat belt 46
Infant and child restraint systems 76
LATCH-type child seat anchors 81
Seat belts 46, 68
Oil
Consumption 294
Viscosity 473
Oil see Engine oil
One-touch gearshifting 183
Opening
Fuel filler flap 290
Operating safety 16
Ornamental moldings, cleaning 345Outside temperature indicator 146
Overdue maintenance service 339
Overhead control panel 29
Overspeed range, engine 475
P
Paintwork, Cleaning 343
Panic alarm 83
Parking 58
Parking brake 51, 59
Message in display 375
Parking lamps 412
Replacing bulbs 415
Switching on 134
Parking position
Exterior rear view mirrors 133
Parktronic 242
Activating/deactivating 245
Minimum distance 243
Range 242
Warning indicators 244
Parktronic system (Parking assist)* see
Parktronic