Page 344 of 474

343 Operation
Vehicle care
Engine cleaning
Prior to cleaning the engine compartment,
make sure to protect electrical compo-
nents and connectors from the intrusion of
water and cleaning agents.
Corrosion protection, such as MB Anticor-
rosion Wax, should be applied to the en-
gine compartment after every engine
cleaning. Before applying, all control
linkage bushings and joints should be
lubricated. The poly-V-belt and all pulleys
should be protected from any wax.
Vehicle washing
In the winter, thoroughly remove all traces
of road salt as soon as possible.
When washing the vehicle underbody, do
not forget to clean the inner sides of the
wheels.Hand-wash
Do not use hot water or wash your vehicle
in direct sunlight.
Only use a mild car wash detergent,
such as Mercedes-Benz approved Car
Shampoo.
Thoroughly spray the vehicle with a dif-
fused jet of water.
Direct only a very weak spray towards
the ventilation intake.
Use plenty of water and rinse the
sponge and chamois frequently.
Rinse with clean water and thoroughly
dry with a chamois.
Do not allow cleaning agents to dry on
the finish.Automatic car wash
You can have your car washed in an auto-
matic car wash from the start. Automatic
car washes without brushes are prefera-
ble.
If the vehicle is very dirty, prewash it be-
fore running it through the automatic car
wash.
!Due to the width of the vehicle, fold in
exterior rear view mirrors prior to run-
ning the vehicle through an automatic
car wash to prevent damage to the
mirrors.
Make sure that the windshield wiper
switch is set to0 (
page 53). Other-
wise, the rain sensor could activate and
cause the wipers to move unintention-
ally. This may lead to vehicle damage.
Page 379 of 474

378 Practical hintsWhat to do if …Display symbol
Display message
Possible cause/consequence
Possible solution
.
High beam left
The left high beam lamp is
malfunctioning.
Replace the bulb as soon as possible.
High beam right
The right high beam lamp is
malfunctioning.
Replace the bulb as soon as possible.
License plate lamp,
left
The left license plate lamp is
malfunctioning.
Replace the bulb as soon as possible.
License plate lamp,
right
The right license plate lamp is
malfunctioning.
Replace the bulb as soon as possible.
Light sensor
Drive to workshop
The lamp sensor is malfunctioning.
The headlamps switch on automatically.
In the control system, set lamp
operation to manual (
page 149).
Switch on the headlamps using the
exterior lamp switch (
page 118).
Visit an authorized Mercedes-Benz
Center as soon as possible.
Low beam left
The left low beam lamp is malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 453 of 474

452 Technical termsMON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized
method. 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
Display field in the instrument cluster
used to present information provided
by the control system.
Multifunction steering wheel
Steering wheel with buttons for
operating the control system.
Normal occupant weight
(
page 332)OCS
(O
ccupant 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.
Occupant distribution
(
page 332)
Overspeed range
Engine speeds within the red marking
of the tachometer dial. Avoid this
engine speed range, as it may result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.Power train
Collective term designating all
components used to generate and
transmit motive power to the drive
axles, including
engine
clutch/torque converter
transmission
transfer case
drive shaft
differential
axle shafts/axles
Production options weight
(
page 333)
Program mode selector switch
Used to switch the automatic
transmission* between standard
operationS and comfort operationC.
Page 454 of 474

453 Technical terms
PSI
(P
ounds per s
quare i
nch) (
page 333)
Recommended tire inflation pressure
(
page 333)
Restraint systems
Seat belts, child restraints, lower
anchors and tethers for children
(LATCH). As independent systems,
their protective functions complement
one another.
Rim
(page 333)
RON
(Research O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line’s ability to resist undesired deto-
nation (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.Shift lock
When the vehicle is parked, this lock
prevents the transmission gear
selector lever from being moved out of
positionP without SmartKey turned
and brake pedal depressed.
Sidewall
(
page 333)
SRS
(Supplemental R
estraint S
ystem)
Air bags, air bag control unit (with
crash sensor), emergency tensioning
device. Though independent systems,
they are closely interfaced to provide
effective occupant protection.Tele Aid* System
(T
elematic A
larm I
dentification on
D
emand)
The Tele Aid system consists of three
types of response: automatic and
manual emergency, roadside assis-
tance and information. Tele Aid is
initially activated by completing a
subscriber agreement and placing an
acquaintance call.
The Tele Aid system is operational
provided that the vehicle’s battery is
charged, properly connected, not
damaged and cellular and GPS
coverage is available.
Page 464 of 474

463 Index
J
Jack 383
Jacking up the vehicle 407
Jump starting 415
K
Key, mechanical 389
Key, SmartKey
Batteries 101
Battery check lamp 101
Changing batteries 396
Factory setting 100
Locking/unlocking 32, 100
Locking/unlocking, Global
setting 100
Locking/unlocking, Selective
setting 100
Loss of 102
Messages in display 376
Opening and closing the power
windows 243
Opening and closing the tilt/sliding
sunroof* 243
Positions in starter switch 33Remote control 98
Starting the engine 48, 49
Turning off the engine 59
Unlocking, Trunk lid 102
Valet locking 106
Kickdown 165, 451
Kilopascal 332
L
Labels 428
Certification 428
Emission control information 428
Emission control vacuum line
routing 428
Lamp sensor
Message in display 378
Lamps, exterior 398, 399
Light sensor 378
Messages in display 377, 378, 379,
380
Lamps, indicator and warning
ABS 25, 350
Battery (SmartKey) 100
Brakes 25, 351Engine diagnostics 352, 355
Engine malfunction 25, 352–353
ESP
®
25, 354
Fog lamps 118
Front passenger front air bag off 27,
68
Fuel reserve 25, 354
High beam headlamps 25
Instrument cluster 350, 355
Low beam headlamps 25
Maintenance service indicator 338
Rear fog lamp 118
Seat belt telltale 25
SRS 25, 63, 355
Turn signals 25
Language, Setting 143
LATCH-type child seat anchors see
Children in the vehicle
Leather upholstery, Cleaning and
care of 348
License plate lamps
Messages in display 378
Replacing bulbs 399
Page 465 of 474

464 IndexLight alloy wheels
Cleaning 346
Technical data 434, 435
Light sensor see Lamp sensor
Lighter see Cigarette lighter
Lighting
Parking lamps 118
Lighting, Exterior and interior 118
Limp Home Mode 169
Loading see Vehicle loading
Loading terminology 331
Loading the vehicle 307
Locator lighting 121, 150
Locking knob 451
Loss of keys 102
Loss of Service and Warranty Information
Booklet 427
Low beam headlamps
Indicator lamp 25
Messages in display 378, 379
Replacing bulbs 398, 401
Switching on 52
Lubricants 440
Technical data 440
Lumbar support* 112M
Main dimensions 438
Main fuse box
In passenger compartment 422
Mainodometer 130
Maintenance 12, 338
Calling up service indicator
display 339
Clearing service indicator
message 339
FSS (Canada vehicles) 338
Maintenance System
(U.S. vehicles) 338
Resetting service indicator 340
Service indicator message 338
Service term exceeded 339
Maintenance System
(U.S. vehicles) 338, 451
Manual headlamp mode see Headlamps
Manual seat see Seat, Manual 36
Manual transmission 160, 161
Gearshift lever 48, 161
Shift positions 161
Starting the engine 49
Maximum load rating, Tires 332
Maximum loaded vehicle weight 332Maximum tire inflation pressure 332
MB Tex upholstery, Cleaning and
care of 348
Mechanical key 389
Memory function* see Steering wheel
Menus see Control system
Microphone, Hands-free 29
Minispare wheel see Spare wheel
Mirrors
Adjusting 43
Auto-dimming* 171
Exterior rear view mirror 43
Exterior rear view mirror,
Parking position* 117, 154, 172
Interior rear view mirror 43, 170
MOE tires see MOExtended system*
(Canada only)
MOExtended system* 411
MOExtended system* (Canada only) 320
MON 452
Motor Octane Number see MON
Multicontour seats* (Canada only) 113
Multifunction display 130, 452
Changing settings see Contro system
menus and Control system
submenus