Page 398 of 514

397 Practical hints
What to do if …?
Display symbol
Display message
Possible cause/consequence
Possible solution
ú
Visit workshop
There may be a malfunction in the
fuel injection system
ignition system
exhaust system
fuel system
Have the measuring system checked
by an authorized Mercedes-Benz Cen-
ter.
B
Coolant
Check level
The coolant level is too low.
Add coolant (
page 327).
If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Center.
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.
!Do not ignore the low engine coolant
level warning. Extended driving with
the message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat, causing major en-
gine damage.
Page 460 of 514

459 Practical hints
Towing the vehicle
Warning!
G
Prior to towing the vehicle with all wheels on
the ground, make certain that the SmartKey
is in starter switch position
2.
If the SmartKey is left in starter switch posi-
tion
0 for an extended period of time, it can
no longer be turned in the switch. In this
case, the steering is locked. To unlock, re-
move SmartKey from starter switch and re-
insert.
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:
the engine will not run
there is a malfunction in the power sup-
ply or in the vehicle’s electrical system
as that will be necessary to adequately con-
trol the towed vehicle.
Warning!
G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle. Adapt your driving accordingly.iTo signal turns while being towed with
the hazard warning flasher in use,
switch on the ignition and activate the
combination switch for the left or right
turn signal in the usual manner – only
the selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, or KEYLESS-GO*
start/stop button in position2, the ve-
hicle doors lock if the left front wheel
as well as the right rear wheel are turn-
ing at vehicle speeds of approx. 9 mph
(15 km / h) or more.
Switch off the tow-away alarm
(page 94).
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 159).
Towing of the vehicle should only be
done using the properly installed tow-
ing eye bolt. Never attach tow cable,
tow rope or tow rod to the vehicle chas-
sis, frame or suspension parts.
Page 501 of 514

500 Index
Lamp sensor 405
Locator lighting 129
Low beam see Low beam headlamps
Manual headlamp mode 128
Messages in display 404–408
Night security illumination 129
Replacing bulbs 440, 443
Switch 52, 127
Headliner and shelf below rear window,
Cleaning and care of 371
Head-thorax air bag 68, 489
Heated seats* 122
High beam flasher 52, 131
Replacing bulbs
(Bi-Xenon*) 438, 442
Replacing bulbs
(Halogen) 438, 440
High beam headlamps 52, 131
Indicator lamp 25
Messages in display 405
Replacing bulbs
(Bi-Xenon*) 438, 439
Replacing bulbs
(Halogen) 438, 440
Replacing bulbs for high beam flasher
(Bi-Xenon*) 442Switching on 52, 131
High mounted brake lamp 439
Hood 321
Message in display 403
Horn 23
Hydroplaning 311
I
Identification labels 468
Identification number, Vehicle (VIN) 468
Ignition
with KEYLESS-GO* 36
with SmartKey 34
Immobilizer 92
Indicator lamps see
Lamps, indicator and warning
Infant and child restraint systems see
Children in the vehicle 75
Inflation pressure see
Tires, Inflation pressure
Inside door handle 30, 107
Instrument cluster 24, 136, 489
Cleaning 371
Illumination brightness 136
Lamps in 374–380
Messages in display see
Multifunction display messagesMultifunction display 140
Instrument lighting see Instrument cluster,
Illumination brightness
Instrument panel see Instrument cluster
Instruments and controls see Cockpit
Interior lighting 134
Delayed shut-off 159
Interior rear view mirror 43, 181
Antiglare position 181
Auto-dimming 182
Interior storage spaces see
Storage compartments
J
Jack 415
Jacking up the vehicle 447
Jump starting 456
Page 502 of 514

501 Index
K
Key, Mechanical 419
Key, SmartKey 96
Batteries 99, 105
Battery check lamp 98, 104
Changing batteries 436
Factory setting 98, 99
Ignition 34
Locking/unlocking 32, 60, 96
Locking/unlocking, Global setting 98
Locking/unlocking,
Selective setting 98
Loss of 100, 106
Message in display 403, 404
Opening and closing
the power windows 252
Opening and closing the soft top 260
Positions in starter switch 34
Remote control 96
SmartKey with KEYLESS-GO* 100
Starting the engine 49
Turning off the engine 58
Unlocking/opening trunk lid 99
Key, SmartKey with KEYLESS-GO*
Changing batteries 437KEYLESS-GO* 100, 489
Batteries in SmartKey 105
Battery check lamp, SmartKey 104
Factory setting 103, 105
Ignition 36
Important notes 102
Lock button 60
Locking/unlocking 33, 60, 100
Locking/unlocking,
Global setting 103, 104
Locking/unlocking, Global
with lock button on trunk lid 105
Locking/unlocking,
Selective setting 104
Loss of key 106
Messages in display 403, 404
Remote control 100
Start/stop button 35
Starting the engine 49
Turning off the engine 59
Unlocking/opening trunk lid 106
Kickdown 170, 489
Kilopascal 356L
Labels 468
Certification 468
Emission control information 468
Vacuum line routing diagram 468
Lamp sensor
Messages in display 405
Lamps, exterior 438
Light sensor 405
Messages in display 404–408
Lamps, indicator and warning
ABS 25, 374
Battery (SmartKey) 98, 104
Brakes 25, 375
Center console 381–382
CHECK ENGINE 376
Coolant 377
Coolant temperature 25, 137
Distance warning 25
Engine diagnostics 376
Engine malfunction 25, 376
ESP
®
25, 378
Fog lamps 130
Front passenger front air bag off 68
Front passenger front
air bag off indicator lamp 381