
453 Practical hints
Towing the 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 igni-
tion 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 hazard warn-
ing flasher will operate again.
!When towing the vehicle with all wheels on
the ground, please note the following:
With the automatic central locking activated and
the SmartKey in starter switch position2, or
KEYLESS-GO* start/stop button in position2,
the vehicle doors lock if the left front wheel as
well as the right rear wheel are turning at vehicle
speeds of approx. 9 mph (15 km / h) or more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking
(
page 164).
Towing of the vehicle should only be done using
the properly installed towing eye bolt. Never at-
tach tow cable, tow rope or tow rod to the vehi-
cle chassis, frame or suspension parts.
iIf the battery is disconnected or discharged
the SmartKey will not turn in the starter
switch. For more information, see “Battery”
(
page 447) and “Jump starting”
(
page 450).
the gear selector lever will remain locked in
positionP. For information on manually un-
locking the transmission gear selector lever,
see (
page 412).

490 Index
KEYLESS-GO* 101
Batteries in SmartKey 107
Battery check lamp, SmartKey 105
Factory setting 104, 106
Ignition 38
Important notes 103
Lock button 62
Locking/unlocking 35, 62, 101
Locking/unlocking,
Global setting 104, 105
Locking/unlocking,
Global with lock button
on trunk lid 106
Locking/unlocking,
Selective setting 105, 106
Loss of key 107
Messages in display 395, 396
Remote control 101
Start/stop button 37
Starting the engine 51
Turning off the engine 60
Unlocking/opening trunk lid 107
Kickdown 174
Kilopascal 348L
Labels 462
Certification 462
Emission control information 463
Vacuum line routing diagram 463
Lamp sensor see Light sensor
Lamps, exterior 427
Light sensor 396
Messages in display 397–400
Lamps, indicator and warning
ABS 27, 366
Battery (SmartKey) 100, 105
Brakes 27, 368
Center console 376–377
CHECK ENGINE 369, 370
Coolant 371
Coolant temperature 27, 137
Distance warning 27
Engine diagnostics 369, 370
Engine malfunction 27, 369, 370
ESP
®27, 372
Fog lamps 130
Front passenger front air bag off 69
Front passenger front
air bag off indicator lamp 376
Fuel reserve 27, 373High beam headlamp 27
Instrument cluster 366–375
Low beam headlamp 27
Parktronic system*
(CLK 63 AMG (USA),
Canada all vehicles)
warning indicators 269
Roll bar 373
Seat belt telltale 27, 78
SRS 27, 65, 375
Turn signals 27
Language, Setting 156
LATCH-type child seat anchors see
Children in the vehicle
License plate lamps
Messages in display 398
Replacing bulbs 428, 433
Light alloy wheels, cleaning 362
Light sensor
Messages in display 396
Lighter see Cigarette lighter
Lighting, Exterior and interior 126
Limp-home mode 183
Loading
Ski sack* (Canada only) 271
Loading see Vehicle loading

492 Index
Multifunction display messages 378
ABS 380
Battery 388
Brake fluid 389
Brake pads 389
Check engine 390
Coolant 390–392
Engine 390
Engine coolant 390–392
ESP
®380
Fog lamps 397
Front passenger
front air bag 382–385
Fuel cap 393
Fuel reserve tank 395
Gear selector lever 386
Headlamps 397–400
Key, SmartKey 395
KEYLESS-GO* 395
Lamps 397
Lamps, exterior 397–400
License plate lamp 398
Light sensor 396
Parking brake 389
Parking lamps 398
Roll bars 386Soft top 402
SRS 401
Steering gear oil 402
Tele Aid 401
Telephone* 403
Turn signals 397
Windshield washer fluid 403
Multifunction steering wheel 28, 140
Button operation 140
N
Navigation system* 151
See separate
COMAND* operating instructions
Net, Parcel 277
Neutral gear position,
Automatic transmission 170, 172
New vehicle break-in 300
Night security illumination 129
Normal occupant weight 348
Number, paintwork code 462
Number, vehicle identification
(VIN) 462, 463O
Occupant Classification System see OCS
Occupant distribution 348
Occupant safety 64
Active head restraints 80
Air bags 65
Children and air bags 82
Children in the vehicle 82
ETD 79
Fastening the seat belts 47
Front air bags 69
Front passenger front
air bag off indicator lamp 74, 376
Head-thorax air bags 70
Infant and child restraint systems 82
LATCH-type child seat anchors 85
OCS 71
Rear side-impact air bags* 70
Roll bars 81
Safety guidelines,
Seat belts, Air bag, ETD 67
Seat belts 47, 75
SRS 64

494 Index
Power windows 249
Cleaning 362
Convenience closing feature 253
Express opening/closing 250, 251
Opening with soft top switch 254
Operating 249
Rear side windows,
Blocking operation 86
Summer opening feature 252
Synchronizing 251
Practical hints 365
Premium unleaded gasoline 475
Problems
While driving 57
With vehicle 17
Product information 9
Production options weight 348
Program mode see
Automatic transmission,
Automatic shift program
Program mode selector switch
Automatic shift program 176
PSI 348
Push-start see Tow-startR
RACETIMER (CLK 63 AMG only) 146
Radio
Operation 218
Search function 163
Selecting stations 149
Selecting stations (satellite*) 150
Radio transmitters 309
Range (distance to empty) 166
Reading lamp 31, 135
Rear fog lamp see Fog lamps
Rear lamps see Tail lamps
Rear seat ashtray see Ashtrays
Rear seat head restraints see
Head restraints
Rear side windows
Blocking operation 86
Rear side-impact air bags* 70
Rear view mirrors see Mirrors
Rear window defroster 187
Recommended
engine oils and oil filter 474
Recommended
tire inflation pressure 348
Recovery services,
Stolen vehicle (Tele Aid) 293Refrigerant, Air conditioning 474
Refueling 312
Regular checks 314
Reminder, Seat belt see Seat belts, Telltale
Remote control
SmartKey 98, 102
SmartKey with KEYLESS-GO* 101
Remote door unlock (Tele Aid) 292
Removing
Ski sack* (Canada only) 274
Replacing bulbs 427
Additional turn signals 428, 429
Backup lamps 428
Brake lamps 428
Corner-illuminating
front fog lamps* 428, 429
Fog lamps 428
Headlamp bulbs 430
Headlamps 428
High beam flasher
(Bi-Xenon*) 428, 431
High beam flasher
(Halogen) 428, 430
High beam headlamps
(Bi-Xenon*) 428, 431

495 Index
High beam headlamps
(Halogen) 428, 430
High mounted brake lamp 429
License plate lamps 428, 433
Low beam headlamps
(Bi-Xenon*) 428, 431
Low beam headlamps
(Halogen) 428, 430
Parking lamps 428, 431, 432
Side marker lamps 428
Standing lamps 428, 431, 432
Tail lamps 428, 432
Turn signal lamps 428
Turn signal lamps (Bi-Xenon*) 432
Turn signal lamps (Halogen) 431
Reporting safety defects 18
Reset button, In
instrument cluster 27, 136, 153, 154
Residual heat and ventilation* see REST*
REST* 209
Restraint system see
Children in the vehicle
Reverse gear position,
Automatic transmission 170, 172
Rims 348, 466
Roadside Assistance 12, 290Roll bar 81
Messages in display 386
Operating manually 413
Warning lamp 373
RON 313
Rubber parts, cleaning 363
Run Flat Indicator (Canada only) 334
S
Safety
Driving safety systems 88
Occupant 64
Reporting defects 18
Safety belts see Seat belts
Satellite radio* 222
Seat belts 75
Automatic comfort-fit feature 79
Cleaning 364
ETD 79
Fastening 47
Force limiter 79
Proper use of 49, 77
Safety guidelines 67
Telltale 27, 78
Seating capacity 327Seats, Multicontour* 121
Backrest contour 121
Backrest side bolsters 121
Cushion depth 121
Seats, Power 39, 119
Active head restraints 80
Adjustment 40
Easy entry/exit feature 44
Heating* 122
Memory function 124
Ventilation* 123
Selector lever see Gear selector lever
Self-test
OCS 75
Tele Aid 287
Service and Warranty Booklet
Loss of 461
Service and warranty information 10
Service intervals see
Maintenance, Service indicator
Service life, Tires 324
Service see Maintenance
Service System see
Maintenance service system
(U.S. vehicles) or
FSS (Canada vehicles)

499 Index
Transmission see Automatic transmission
Traveling abroad 309
Tread 349
Tread depth 325, 351
Treadwear indicators 349
Trip computer 165
Trip odometer 137
Trunk
Closing from inside 110
Fuse box 458
Lamp 135
Lid 109
Lock button, KEYLESS-GO* 106
Luggage cover 260
Opening 109
Opening from inside 109
Trunk lid 110
Trunk lid emergency release 116
Unlocking in an emergency 411
Unlocking/opening,
KEYLESS-GO* 107
Unlocking/opening,
SmartKey 101
Valet locking 117Turn signal lamps
Cleaning lenses 361
Messages in display 397
Replacing bulbs (Bi-Xenon*) 432
Replacing bulbs (Halogen) 431
Turn signals 55
Additional in mirrors 428
Bulbs 428
Bulbs (Bi-Xenon*) 432
Bulbs (Halogen) 431
Cleaning lenses 361
Indicator lamps 27
Turning off engine 60
U
Uniform Tire Quality Grading
Standards 349
Units, Settings
Speedometer 156
Unleaded gasoline, Premium 475
Upholstery, Cleaning 364
Useful features 276V
Vacuum line routing diagram label 463
Vehicle
Battery 321, 447
Break-in period 300
Care 356
Control system, Settings menu 153
Dimensions 471
Jump starting 450
Locking/unlocking,
KEYLESS-GO* 35, 62, 101
Locking/unlocking,
SmartKey 34, 62, 98
Lowering 445
Modifications and alterations,
Operating safety 16
Towing 452
Unlocking/locking
in an emergency 410, 411
Washing 358
Weights 471
Vehicle identification number see VIN
Vehicle jack 406, 442
Vehicle lighting 126, 314