Page 360 of 481

359 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may ap-
pear in the multifunction display.
For your convenience the messages are
divided into two sections:
Text messages (page 360)
Symbol messages (page 372)
Warning!G
No messages will be displayed if either the
instrument cluster or the multifunction dis-
play is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, please do so
with added caution. Contact an authorized
Mercedes-Benz Center as soon as possible.
iSwitching on the ignition causes all
instrument cluster lamps (except high beam
headlamp indicator lamp and turn signal indica-
tor lamps unless activated) as well as the multi-
function display to come on. Make sure the
lamps and multifunction display are in working
order before starting your journey.
Page 366 of 481

365 Practical hints
What to do if …
Display messagePossible cause/con-
sequencePossible solution
Monitor the 75 indicator lamp on the center console (page 29) and
the multifunction display in the instrument cluster (
page 27) for the following:
With the seat unoccupied and the ignition turned on,
the 75 indicator lamp on the center console should illuminate and
remain illuminated, indicating that the OCS (
page 71) has deactivated the
front passenger front air bag.
the message Front Passenger Airbag Enabled See Operator’s Manual or the
message
Front Passenger Airbag Disabled See Operator’s Manual should
not appear in the multifunction display at any time the seat is unoccupied. Wait
at least 60 seconds for the system to complete the necessary check cycles and
to make sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again. De-
pending on the front passenger classification sensed by the OCS (
page 71), the
75 indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the sys-
tem checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!G
If the 75indicator lamp
remains out even after performing the above
corrective steps, do not have any children
12 years old and under and other smallindividuals use the front passenger seat un-
til the system has been repaired.
Page 368 of 481

367 Practical hints
What to do if …
Display messagePossible cause/con-
sequencePossible solution
Monitor the 75 indicator lamp on the center console (page 29) and
the multifunction display in the instrument cluster (
page 26) for the following:
With the seat unoccupied and the ignition turned on,
the 75 indicator lamp on the center console should illuminate and
remain illuminated, indicating that the OCS (
page 71) has deactivated the
front passenger front air bag.
the message Front Passenger Airbag Enabled See Operator’s Manual or the
message
Front Passenger Airbag Disabled See Operator’s Manual should
not appear in the multifunction display at any time the seat is unoccupied. Wait
at least 60 seconds for the system to complete the necessary check cycles and
to make sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again. De-
pending on the front passenger classification sensed by the OCS (
page 71), the
75 indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the sys-
tem checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!G
If the 75 indicator lamp
remains illuminated with an adult occupant
on the front passenger seat even after per-
forming the above corrective steps,do not have any passenger use the front
passenger seat until the system has been
repaired.
Page 377 of 481

376 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 symbolDisplay messagePossible cause/consequencePossible solution
DCoolant
Stop Vehicle,
turn engine off.The coolant is too hot.Stop the vehicle in a safe location or as soon
as it is safe to do so and immediately turn
off the engine.
Only start the engine again after the mes-
sage disappears. You could otherwise dam-
age the engine.
Apply the parking brake (page 53).
Observe the coolant temperature indicator
in the instrument cluster (
page 26).
If the temperature rises again:
Contact an authorized Mercedes-Benz
Center immediately.
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.
Stop the vehicle in a safe location away from
other traffic. 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 378 of 481
377 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
DCoolant
Stop Vehicle,
turn engine off.The poly-V-belt could be broken.Stop the vehicle in a safe location and immediately
turn off the engine.
Check the poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise the engine will
overheat due to an inoperative water pump which
may result in damage to the engine. Notify an au-
thorized Mercedes-Benz Center.
If it is intact:
Do not continue to drive the vehicle with this mes-
sage displayed. Doing so could result in serious en-
gine damage that is not covered by the
Mercedes-Benz Limited Warranty.
Observe the coolant temperature indicator in the
instrument cluster (
page 26).
Drive immediately to the nearest authorized
Mercedes-Benz Center.
Page 379 of 481

378 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
DThe cooling fan for the coolant is
malfunctioning.Observe the coolant temperature indicator in the
instrument cluster (
page 26).
If the coolant temperature is under 248°F (120°C),
you may continue driving to an authorized
Mercedes-Benz Center.
Avoid placing heavy loads on the engine (e.g. by
driving uphill) as well as stop-and-go traffic.
Have the fan replaced as soon as possible.
± Display Malfunction
Service RequiredCertain electronic systems are
unable to relay information to
the control system. The follow-
ing systems may have failed:
Coolant temperature display
Tachometer
Cruise control display
Have the electronic systems checked by an autho-
rized Mercedes-Benz Center.
Engine
ServiceThere may be a malfunction in:
the fuel injection system
the ignition system
the exhaust system
Have the engine checked as soon as possible by an
authorized Mercedes-Benz Center.
Page 460 of 481

459 Index
Center console
Lower part 30
PASS AIR BAG OFF indicator
lamp 356
Upper part 29
Central locking
Automatic 116
Locking/unlocking from inside 116
Switching on/off (control
system) 163
Central locking switch 116
Certification label 300
Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System* (Advanced TPMS*), (Canada
only) 309
Checking tire pressure electronically with
the Tire Pressure Monitoring System
(TPMS), (USA only) 306
Children in the vehicle 82
Air bags 67
Infant and child restraint systems 82
LATCH-type child seat anchors 86
Override switch for rear passenger
compartment 87
Cigarette lighter 249Climate control system
Air conditioning refrigerant 450
Air conditioning, Cooling 201
Air distribution 195
Air recirculation mode 198
Air volume 196
Automatic mode 194
Control panel, Rear 202
Deactivating system 194
Front defroster 197
Maximum cooling MAX COOL 198
Rear climate control 202
Residual engine heat (REST) 201
Clock 27, 157
Setting time 157
Cockpit 24
Cold tire inflation pressure 324
Collapsible tire
Inflating 416
Collapsible wheel chock 397
COMAND see separate operating instruc-
tions
Combination filter with pollutant-sensitive
air-recirculation mode 200
Combination switch 55, 130Control system 139
Functions 143
Multifunction display 139
Multifunction steering wheel 140
Resetting to factory default 153
Control system menus 142, 143
AUDIO 148
Distronic* 151
NAV* 150
Settings 152
Standard display 145
TEL* 166
Trip computer 164
Vehicle status message memory 151
Control system submenus
Convenience 163
Instrument cluster 155
Lighting 159
Time/Date 157
Vehicle 162
Convenience submenu 163
Activating easy-entry/exit
feature* 163
Page 463 of 481

462 Index
Emergency, In case of
Batteries, Jump starting 423
First aid kit 393
Flat tire, changing 412
Fuses 428
Hazard warning flasher 132
Instrument cluster, Indicator
lamps 346
Instrument cluster, indicator
lamps 344
Roadside Assistance 12
Towing the vehicle 344
Emission control 281
Information label 435
System warranties 10
Engine 437
Belt layout 436
Block heater* (Canada only) 329
Break-in recommendations 270
Cleaning 335
Compartment 286
Malfunction indicator lamp 348, 349,
375
Maximum engine speed 437
Number 434, 435
Starting 51Starting with KEYLESS-GO* 52
Tachometer 27
Technical data 437
Turning off with KEYLESS-GO* 61
Turning off with the SmartKey 61
Engine compartment
Hood 286
Engine coolant see Coolant 290
Engine oil 287, 448
Adding 289
Additives 450
Changing 450
Checking level 288
Consumption 287
Filler neck 289
Messages in display 379
Oil dipstick 288
Recommended engine oils and oil
filters 450
ESP
®92
Messages in display 360, 374
Warning lamp 345, 346
ETD
Safety guidelines 68
Exterior lamp switch 126Exterior rear view mirrors 47
Parking position 184
Exterior view 22
F
Factory settings
Resetting 153
SmartKey with KEYLESS-GO* 106
Filler neck, Engine oil 289
First aid kit 393
Flat tire 412
Collapsible tire 415, 416
Jacking up the vehicle 414
Lowering the vehicle 418
Mounting the spare wheel 412, 415
Preparing the vehicle 412
Spare wheel 412
Floormats 252
Fluids
Automatic transmission fluid 448
Brake fluid 449
Capacities 448
Engine coolant 449
Engine oil 448
Power steering fluid 449
Washer and headlamp cleaning
system 449