
4 Contents
Malfunction and indicator
lamps in the
center console ...........................233
AIRBAG OFF
indicator lamp .............................233
Roll bar warning lamp ...............233
Malfunction and
warning messages in the
multifunction display ...............234
DISPLAY DEFECTIVE
(engine control unit) ..................235
DISPLAY DEFECTIVE
(several systems) ........................235
BATTERY/ALTERNATOR ...........236
ABS-SYSTEM ...............................237
BRAKE ASSIST ...........................237
BRAKE LINING WEAR ..............238
BRAKE FLUID .............................238PARKING BRAKE ....................... 239
ENGINE FAN ............................... 239
COOLANT
(coolant level) ............................. 240
COOLANT TEMP.
(coolant temperature) ............... 241
LIGHTING SYSTEM ................... 242
LIGHT SENSOR .......................... 243
STEER. WHEEL ADJUST. .......... 243
ENGINE OIL LEVEL ................... 244
ELEC. STABIL. PROG.
(Electronic stability
program) ..................................... 245
REMOVE KEY ............................. 245
WASHER FLUID ......................... 246
TELE AID ..................................... 247
Practical hintsFirst aid kit .....................................250
Shelf below rear window ..............250
Stowing things in
the vehicle ..................................250
Luggage cover .................................250
Fuses ................................................252
Hood .................................................254
Checking engine oil level .............256
Automatic transmission
fluid level ...................................257
Coolant level ...................................257
Adding coolant ...........................258
Windshield washer / headlamp
cleaning system ........................259
Windshield and headlamp
washer fluid mixing ratio .........259

226 Check regularly and before a long trip
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Check regularly and before a long trip 1Engine oil level
See “Engine oil level, checking” on page 112 and
page 256.
2Coolant level
See “Coolant level” on page 257.
3Brake fluid
See “Brake fluid” on page 319.
4Windshield washer system
Headlamp cleaning system
For refilling reservoir see page 259.
Opening hood, see page 254.
Ve h i c l e l i g h t i n g : Check function and cleanliness. For
replacement of light bulbs, see “Exterior lamps” on
page 280.
Exterior lamp switch, see page 114.

249 Contents – Practical hints
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Practical hintsFirst aid kit .....................................250
Shelf below rear window ..............250
Stowing things in
the vehicle ..................................250
Luggage cover .................................250
Fuses ................................................252
Hood .................................................254
Checking engine oil level .............256
Automatic transmission
fluid level ...................................257
Coolant level ...................................257
Adding coolant ...........................258
Windshield washer / headlamp
cleaning system .........................259Windshield and headlamp
washer fluid mixing ratio ........ 259
Spare wheel, vehicle tools,
storage compartment ............... 260
Vehicle jack .................................... 261
Wheels ............................................ 262
Tire replacement ....................... 262
Rotating wheels ......................... 263
Spare wheel .................................... 264
Changing wheels ........................... 266
Tire inflation pressure ..................271
Battery ............................................. 272
Jump starting ..................................274
Towing the vehicle .........................276
Exterior lamps ............................... 280
Headlamp assembly .................. 281
Taillamp assemblies .................. 283Adjusting headlamp aim ...............285
Changing batteries in
the electronic main key ...........288
Synchronizing
remote control ...........................290
Raising soft top manually ............. 291
Antenna ...........................................298
Manual release for
fuel filler flap .............................298
Trunk lamp .....................................299
Replacing wiper
blade insert ................................299

256 Engine compartment
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Checking engine oil level (CLK 320 shown)
1Oil dipstick
2Oil filler cap
To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check engine oil level approximately 5 minutes after
stopping the engine, allowing for the oil to return to the
oil pan.Wipe oil dipstick clean prior to checking the engine oil
level. Fully insert dipstick in tube, and remove after
three seconds to obtain accurate reading.
Oil level must be between the
lower (min) and upper (max) mark of
the dipstick.
Fill qu antity b etween u pper a nd l ower dipstick m arking
level is approximately 2.1 US qt (2.0 l).
Do not overfill th e engine.
Excessive oil must be drained
or siphoned. It could cause damage to engine and
catalytic converter not covered by the Mercedes-Benz
Limited Warranty.
See malfunction and warning messages on page 234 if
an engine oil level display appears on the multifunction
display when the engine is running.
Note:
See page 112 for engine oil level indicator.
Mercedes-Benz
Mercedes-Benz
2
1

327 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Central locking system ................................................... 28
Automatic central locking ......................................... 37
Choosing global or selective mode ........................... 31
Electronic main key .................................................... 25
Electronic reserve key ................................................ 26
Locking and unlocking .............................................. 30
Mechanical keys .......................................................... 33
Remote control ............................................................ 28
Changing wheels ...........................................................266
CHECK ENGINE malfunction indicator lamp ............228
Check regularly and before a long trip ......................226
Checking engine oil level
Via engine oil level indicator ...................................112
Via oil dipstick ...........................................................256
Child restraint .............................................. 58, 63, 64, 74
Cleaning and care of the vehicle .................................302
Clock, setting .................................................................. 106
COMAND, radio and telephone ................................... 178
Combination switch .......................................................117
Consumer information ..................................................323
Control and operation of radio transmitters ............. 178
COOLANT (coolant level) -
malfunction and warning messages ......................240
Coolant level
Adding coolant ..........................................................258
Checking ....................................................................257COOLANT TEMP. (coolant temperature) -
malfunction and warning messages ......................241
Coolant temperature gauge ............................................ 86
Coolants ...........................................................................321
Anticorrosion/antifreeze quantity .........................321
Cruise control ................................................................. 214
Cup holder
Center console, front ................................................ 153
DDaytime running lamps ................................................ 115
Deep water
Driving instructions ................................................. 212
DISPLAY DEFECTIVE (engine control unit) -
malfunction and warning messages ..................... 235
DISPLAY DEFECTIVE (several systems) -
malfunction and warning messages ..................... 235
Display illumination ........................................................ 85
Doors .................................................................................. 34
Drinking and driving .................................................... 205
Drive sensibly - save fuel ............................................. 205
Driving instructions ..................................................... 205
Driving off ...................................................................... 207

328 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
EELEC. STABIL. PROG. - malfunction
and warning messages ............................................245
Electronic main key ......................................................... 25
Changing batteries ...................................................288
Synchronizing remote control ................................290
Electronic stability program (ESP)
Control switch ...........................................................222
Malfunction and warning messages ......................245
Malfunction indicator lamp ..................................... 231
Synchronizing ........................................................... 221
Warning lamp ............................................................ 231
Emergency call
See Tele Aid ............................................................... 182
Emergency tensioning retractor (ETR) ......................... 65
Emergency trunk lid release button ............................. 41
Emergency unlocking in case of accident ................... 37
Emission control ............................................................ 181
Emission control label .................................................. 312
Engine compartment .....................................................254
ENGINE FAN - malfunction
and warning messages ............................................239
Engine malfunction
CHECK ENGINE malfunction indicator lamp .......228
Engine oil additives ....................................................... 319Engine oil consumption ................................................ 113
Engine oil level
Checking ............................................................ 112, 256
Warning ..................................................................... 244
ENGINE OIL LEVEL - malfunction
and warning messages ............................................ 244
Engine oil level indicator .............................................. 112
ENGINE OIL LEVEL NOT WHEN ENGINE ON
(measuring) - multifunction indicator ................... 113
Engine oils ...................................................................... 319
Capacities ................................................................... 317
ESP (Electronic stability program) ....210, 212, 220, 278
Control switch .......................................................... 222
Malfunction and warning messages ..................... 245
Malfunction indicator lamp .....................................231
Synchronizing ...........................................................221
Warning lamp ............................................................231
Exterior lamp malfunction
and warning message .............................................. 242
Exterior lamp switch ..................................................... 114
Exterior lamps ............................................................... 280
Adjusting headlamp aim ......................................... 285
Fog lamps ................................................................... 114
Headlamps ...................... 114, 242, 243, 281, 285, 305
Low and high beam ........................................... 117, 282
Parking lamps ................................................... 114, 282