Page 390 of 539

389 Practical hints
What to do if …
Problem
Possible cause
Suggested solution
<
The red seat belt telltale remains
illuminated after driving off. The
vehicle’s speed does not exceed
15 mph (25 km/h).
You and/or your front passenger have for-
gotten to fasten your seat belts.
There are items placed on the front passen-
ger seat and therefore the system senses the
front passenger seat as being occupied.
Fasten your seat belts.
Remove the items from the front pas-
senger seat and put them in a safe
place.
<
The red seat belt telltale flashes
and you additionally hear an in-
termittent warning chime with in-
creasing intensity for a maximum
of 60 seconds from the time the
vehicle’s speed exceeds 15 mph
(25 km/h).
You and/or your front passenger have for-
gotten to fasten your seat belts.
There are items placed on the front passen-
ger seat and therefore the system senses the
front passenger seat as being occupied.
Fasten your seat belts.
Remove the items from the front pas-
senger seat and put them in a safe
place.
iAfter 60 seconds with an unfastened
seat belt on one of the front seats the
warning chime stops sounding and the
seat belt telltale illuminates continu-
ously.
The seat belt telltale will only go out if
both the driver and front passenger’s
seat belt are fastened, or the vehicle is
standing still and a front door is
opened.
Page 451 of 539
450 Practical hintsReplacing bulbs4Bulb socket of front fog lamp bulb
Turn bulb socket4 with the bulb
counterclockwise and remove it.
Insert new bulb socket4 with the bulb
into the lamp and turn it clockwise.
Plug electrical connector onto the bulb
socket4.
Reinstall front fog lamp2 into the
bumper.
Reinstall cover1 into the bumper un-
til it engages.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 138).
Open the tailgate.
Open the cover in the cargo compart-
ment.
For the driver’s side rear lamps, see
“First aid kit” (
page 430).
For the passenger-side rear lamps, see
“Fuse box in cargo compartment”
(
page 479).Vehicles without sound system*:
Remove the additional cover on the
driver’s side.
1Screw
Turn the screws1 90° counterclock-
wise and remove the storage bin.
Page 505 of 539

504 Technical termsMaximum tire inflation pressure
(
page 366)
Modular COMAND System
Information and operating center for
vehicle sound and communications
systems, including the radio and the ra-
dio and navigation system, as well as
for other optional equipment (CD
changer, telephone, etc.).
Memory function*
Used to store three individual seat,
steering wheel and exterior mirror
positions.
MON
(Motor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized meth-
od. It is an indication of a gasoline’s
ability to resist undesired detonation
(knocking). The average of both the
MON (Motor Octane Number) and
->RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Multifunction display
The display field in the instrument clus-
ter used to present information provid-
ed by the control system.
Multifunction steering wheel
Steering wheel with buttons for operat-
ing the control system.
Normal occupant weight
(
page 366)
OCS
(Occupant C
lassification S
ystem)
The system automatically turns the
front passenger front air bag on or off
based on the classified occupant size
category determined by weight sensor
readings from the seat.
Overspeed range
Engine speeds within the red marking
on the tachometer dial. Avoid this en-
gine speed range, as it may result in se-
rious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.Parktronic (Parking assist)*
System which uses visual and acoustic
signals to assist the driver during park-
ing maneuvers.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.
Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing
Engine
Clutch/torque converter
Transmission
Transfer case
Drive shaft
Differential
Axle shafts/axles
Page 536 of 539

535 Index
Vehicle jack 431
Vehicle level control* 250, 506
Vehicle lighting
Checking 325
Vehicle loading terminology 365
Vehicle maximum load on the tire 368
Vehicle tool kit 430
Setting up the collapsible wheel
chock 432
Vehicle washing 376
VIN (Vehicle Identification Number) 506W
Warning indicators
Parktronic* 256
Warning sounds
Drivers seat belts 75
Parking brake 53
Warranty coverage 483
Washer fluid see Windshield washer fluid
Wear pattern (tires) 368
Weights 492
Wheel change
Tightening torque 461
Wheels
Rotating 368
Window curtain air bags 72
Windows see Side windows
Windshield
Defogging 208, 222
Refilling washer fluid 334
Replacing wiper blades 453
Washer fluid 333, 500
Washer system 500Windshield washer fluid 500
Message in display 427
Mixing ratio 500
Refilling 333
Wiping with 56
Windshield washer system 500
Windshield wipers 55
Fast wiper speed 55
Intermittent 55
Intermittent wiping 55
Interval wiping 56
Normal wiper speed 55
Rear window wiper/washer 57
Replacing wiper blades 453
Simultaneous wiping and washing 58
Single wipe 56
Switching on 55
Wiping with windshield washer
fluid 56
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