Page 365 of 506
364 Practical hintsWhat to do if …?
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the display.
For your convenience the messages are
divided into two sections:
Text messages (
page 365)
Symbol messages (
page 374)
iSwitching on the ignition causes all
instrument cluster lamps (except low
beam headlamp indicator lamp, high
beam headlamp indicator lamp, and
turn signal indicator lamps unless
activated) as well as the multifunction
display to come on. Make sure the
lamps and the multifunction display are
in working order before starting your
journey.
Page 377 of 506
376 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
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 310).
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 434 of 506

433 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 91).
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 155).
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 468 of 506

467 Index
A
ABS 25, 84, 461
Malfunction indicator lamp 354
Messages in display 366
Accelerator position, automatic
transmission 170
Accessory weight 335
Accident
In case of 54
Activating
Air conditioning (cooling) 188, 198
Air recirculation mode 186, 196
Anti-theft alarm system 90
Automatic climate control* 191
Central locking (control system) 155
Charcoal filter 197
Climate control 181
Climate control system 183
Defrosting 185
Automatic climate control* 195
Easy-entry/exit feature 156ESP 88
Exterior headlamps 50
Exterior lamps 123
Exterior rear
view mirror parking position 177
Front and rear fog lamp 125
Hazard warning flasher 128
Headlamps 50
High beams 126
Ignition 34
Ignition with KEYLESS-GO* 36
Immobilizer 56, 89
Rear window defroster 179
Residual heat 199
Seat ventilation* 118
Tow-away alarm 91
Windshield wipers 52
Adding
Coolant 310
Engine oil 309
Additional turn signals 414
Adjustable air vents, rear
passenger compartment 189, 200Adjusting 37
Air distribution 184, 194
Air volume 184, 194
Backrest tilt 38
Exterior rear view mirror 41
Head restraint height 38
Head restraint tilt 39
Instrument cluster illumination 130
Interior rear view mirror 41
Mirrors 41
Multicontour seat* 116
Seat cushion depth 116
Seat cushion tilt 38
Seat fore and aft adjustment 38
Seat height 38
Seats 37
Steering column in/out 41
Steering column up/down 41
Steering wheel 40
Adjusting air
distribution and volume 184
Adjusting sound functions 205
Adjusting the volume 205
Aids for changing fuses 436
Page 479 of 506

478 IndexH
Hands-free microphone 29
Hard plastic trim items
Cleaning 351
Hazard warning flasher 127
Switching off 128
Switching on 128
Head restraints 113
Headlamp cleaning system* 312
Headlamps
Automatic control 123
Bi-Xenon 461
Cleaning 348
Cleaning system* 176, 312
Refilling washer fluid 312
Switching off 56
Switching on 50
Washer fluid 460
Washer system* 460
Headliner
Cleaning 351
Head-thorax air bag 66, 463Height adjustment
Head restraints 38
High beam flasher 126
Replacing bulbs (Bi-Xenon*) 414
Replacing bulbs (Halogen) 414
High beam headlamps
Messages in display 384
Replacing bulbs (Bi-Xenon*) 414
Replacing bulbs (Halogen) 414, 416
Replacing bulbs for
high beam flasher (Bi-Xenon*) 418
Switching on 126
High mounted brake lamp 415
Hood 305
Closing 306
Message in display 382
Opening 305
Hydroplaning 295I
Identification labels 442
Ignition 34, 36
Switching on 47
Immobilizer 89
Activating 89
Deactivating 89
Infant and child restraint systems 72
LATCH child seat anchors 80
Information
About service and warranty 10
Button for Tele Aid 281
Inside rear view mirror
Auto-dimming 176
Installing
Floormates* 275
Towing eye bolt 434
Towing eye bolt (CLK 55 AMG) 435
Wind screen 253
Wiper blades 421
Page 480 of 506

479 Index
Instrument cluster 24, 130, 463
Cleaning 351
Coolant temperature indicator 131
Illumination 130
Lamps in 354–360
Multifunction display 133
Outside temperature indicator 132
Selecting language 146
Instruments and controls see Cockpit
Interior lighting 128
Activating automatic control 128
Deactivating automatic control 129
Delayed switch-off 154
Manual operation 129
Interior rear view mirror
Adjusting 41
Intermittent wipe 53J
Jack 391, 393
Jump starting 430
K
Key 209
Key, mechanical 397
Key, SmartKey with KEYLESS-GO*
Replacing the batteries 413
Key-dependency memory
Settings 157
KEYLESS-GO* 463
Activating ignition with 36
Closing side windows with 243
Closing windows with 243
Factory setting 101
Global locking 102
Global unlocking 101
Important notes 100
Messages in display 382
Remote control 98Starting the engine 47
Turning off the engine 57
Unlocking with 33
Unlocking, trunk lid 104
Kickdown 170, 463
Kilometers/miles in speedometer 145
Kilopascal 336
Km/h or mph in speedometer 145
L
Labels, identification 442
Lamp bulbs, exterior 414
Lamp sensor
Messages in display 384
Lamps, exterior
Front 414
Light sensor 384
Messages in display 383–386
Rear 415