2007 MERCEDES-BENZ CLK350 check engine light

314 Operation
At the gas station
Check regularly and before a long trip
Engine compartment (CLK 550, example)
1Coolant level
2Brake fluid (fuse box cover removed)
3Windshield washer and headlamp
cleaning system*Coolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant” (
page 320) and see “Fu-
els, coolants, lubricants, etc.”
(
page 472).
Brake fluid
Removing fuse box cover (
page 457).Windshield washer and headlamp
cleaning system*
For more information on filling up the
washer reservoir, see “Windshield washer
system and headlamp cleaning system*”
(
page 322).
Engine oil level
For more information on engine oil, see
“Engine oil” (
page 317).
Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, see
“Replacing bulbs” (
page 427).
For more information, see “Exterior lamp
switch” (
page 54).
Tire inflation pressure
For more information, see “Recommended
tire inflation pressure” (
page 331).
iOpening the hood, see (page 315).
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks immediately. Notify an
authorized Mercedes-Benz Center immediately.
Do not add brake fluid as this will not solve the
problem. For more information, see also “Practi-
cal hints” (
page 368).

396 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
I Keyless Go
Check systemThe KEYLESS-GO* system is malfunction-
ing.Contact an authorized Mercedes-Benz
Center as soon as possible.
Key detected
in vehicleA SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.Take the SmartKey out of the vehicle.
Please do not
forget keyThis display appears (for a maximum of
60 seconds) if the driver’s door is opened
with the engine shut off and no SmartKey
in the starter switch.
Message is only a reminder.Insert SmartKey in the starter switch.
Take the SmartKey with
KEYLESS-GO* with you when leaving
the vehicle.
. Active headlamps
inoperativeThe Bi-Xenon cornering lamps system is
malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Active headlamps
Auxiliary bulb onThe active headlamps are malfunctioning.
Another light is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
AUTO-Light
inoperativeThe light sensor is malfunctioning. The
headlamps switch on automatically.In the control system, set lamp opera-
tion to manual mode (
page 160).
Switch on headlamps using the exteri-
or lamp switch.
Contact an authorized Mercedes-Benz
Center as soon as possible.

489 Index
I
Identification labels 462
Identification number,
Vehicle (VIN) 462, 463
Ignition
with KEYLESS-GO* 38
with SmartKey 36
Immobilizer 95
Indicator lamps see
Lamps, indicator and warning
Infant and child restraint systems see
Children in the vehicle 82
Inflation pressure see
Tires, Inflation pressure
Inside door handle 32, 108
Instrument cluster 26, 136
Illumination brightness 136
Lamps in 366–375
Messages in display see
Multifunction display messages
Multifunction display 139
Instrument lighting see
Instrument cluster, Illumination
brightness
Instrument panel see Instrument cluster
Instruments and controls see CockpitInterior lighting 134
Delayed shut-off 163
Interior rear view mirror 45, 184
Antiglare position 184
Auto-dimming 185
Interior storage spaces see
Storage compartments
J
Jack 406
Jacking up the vehicle 441
Jump starting 450K
Key, Mechanical 410
Key, SmartKey 98
Batteries 107
Battery check lamp 100, 105
Changing batteries 426
Factory setting 100, 101
Ignition 36
Locking/unlocking 34, 62, 98
Locking/unlocking,
Global setting 100
Locking/unlocking,
Selective setting 100
Loss of 107
Message in display 395, 396
Opening and closing
the power windows 252
Opening and closing
the soft top 259
Positions in starter switch 36
Remote control 98
SmartKey with KEYLESS-GO* 101
Starting the engine 51
Steering wheel lock 36
Turning off the engine 60
Unlocking/opening trunk lid 101

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

493 Index
OCS 71
Self-test 75
Odometer 27
Oil level see Engine oil, checking level
Oil see Engine oil
One-touch gearshifting
Gear selector lever 177
Steering wheel
gearshift control* 179
Operating safety 211
Operating the vehicle
outside the USA or Canada 13
Ornamental moldings, cleaning 360
Outside temperature see Displays
Overdue maintenance service 354
Overhead control panel 31P
Paintwork code 462
Paintwork, Cleaning 357
Panic alarm 87
Parcel net
Front passenger footwell 277
Parking 58, 304
Over combustible materials 58, 304
Parking assist* see
Parktronic system*
(CLK 63 AMG (USA),
Canada all vehicles)
Parking brake 52, 58
Message in display 389
Warning sounds 53
Parking lamps 126
Message in display 398
Replacing bulbs 428, 431, 432
Parktronic 270
Parktronic system*
(CLK 63 AMG (USA),
Canada all vehicles) 267
Cleaning system sensors 361
Malfunction 270
Range of the sensors 268
Switching on/off 270Warning indicators 269
Warning sounds 269, 270
Parts service 460
PASS AIR BAG OFF indicator lamp see
Front passenger front
air bag off indicator lamp
Passenger compartment 309
Electrical outlet 283
Interior lighting 134
Interior rear view mirror 45
Main fuse box 457
Parcel net in
front passenger footwell 277
Storage bags, rear side
of the front seats 277
Passenger safety see Occupant safety
Pedals 301
Phone see Telephone
Plastic parts, cleaning 363
Poly-V-belt drive
Layout 464
Positions (Memory function) see
Seats, Power
Power assistance 302
Power seat see Seats, Power
Power washer 357