Page 278 of 341

275 Towing
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index With the automatic central locking activated and the
electronic key in steering lock position 2, 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 doors from
locking, deactivate the automatic central locking, see
page 34.
Note:
To signal turns while being towed with hazard warning
flasher in use, turn electronic key in steering lock to
position 2 and activate combination switch for left or
right turn signal in usual manner – only the selected
turn signal will operate.
Upon canceling the turn signal, the hazard warning
flasher will operate again.The rear towing eye is located at the right, below the
bumper. The front towing eye is located on the
passenger side behind a cover in the bumper panel.
CLK 320 (except Sport Package):
Cover removal:
Insert finger in recess of cover and pull cover out.
Cover installation:
Engage cover at bottom and press in top securely.
Wa r n i n g !
With the engine not running, there is no power
assistance for the braking 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 vehicle.
P88.20-2026-26
ProCarManuals.com
Page 281 of 341
278 Exterior lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Headlamp assembly (Halogen)
1Headlamp vertical adjustment screw
2Cover for low beam headlamp
3Cover for high beam headlamp, parking and
standing lampHeadlamp assembly (Xenon) (optional)
4Bulb socket for turn signal lamp
5Electrical connector for low beam headlamp bulb
6Electrical connector for high beam headlamp bulb
7Bulb socket for parking and standing lamp
P82.10-2394-26
4
1
5
6
7
2
3
4
6
7
2
3P82.10-2395-26
5
1
ProCarManuals.com
Page 282 of 341

279 Exterior lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Bulbs for low or high beam
H7 (55 W)
Open hood.
Rotate cover (2 or 3) counterclockwise and remove. Pull
off electrical connector (5 or 6). Unhook clamping ring
and remove bulb.
Insert new bulb (seating properly in cutouts of bulb
socket), mount clamping ring. Reinstall and push
electrical connector on securely.
Reinstall cover (2 or 3).
Xenon (optional)
Bulb for low beamTurn signal lamp
1156 NA (26.9/5 W/32/4 cp bulb)
Open hood.
Twist bulb socket (4) counterclockwise and pull out.
Push bulb into socket, turn counterclockwise and
remove.
Insert new bulb in socket, push in and twist clockwise.
Reinstall bulb socket. Reinstall lamp assembly until
properly seated.
Parking and standing lamp
H6W (6Wbulb)
Open hood.
Rotate cover (3) counterclockwise and remove.
Twist bulb socket (7) counterclockwise and pull out.
Push bulb into socket, turn counterclockwise and
remove.
Insert new bulb in socket, push in and twist clockwise.
Reinstall bulb socket. Reinstall lamp assembly until
properly seated.
Reinstall cover (3).
Wa r n i n g !
Do not remove the cover for the Xenon headlamp.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the lamp
and its components. We recommend that you have
such work done by a qualified technician.
ProCarManuals.com
Page 283 of 341
280 Exterior lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Taillamp assemblies
Open trunk lid.
Swing cover aside (bulbs 1, 2 and 3).
1Turn signal lamp (21W/24cpbulb)
2Stop, tail, parking, and side marker lamp
(21/4 W bulb)
3Tail and parking lamp (5 W/4 cp bulb)4Driver’s side:
Rear fog lamp (21W/32cpbulb)
5Backup lamp (21 W/32 cp bulb)
Twist bulb socket counterclockwise and pull out. Push
bulb into socket, turn counterclockwise and remove.
Insert new bulb in socket, push in and twist clockwise.
Reinstall bulb socket. Close cover (bulbs 1, 2 and 3).
1
2
3
P82.10-2080-26
P82.10-2083-26
4
5
ProCarManuals.com
Page 285 of 341
282 Exterior lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
High mounted stop lamp,
Additional turn signals on the exterior mirror
The high mounted stop lamp (3rd brake lamp), and the
additional turn signals on the exterior mirrors are
equipped with LEDs.
Have the system checked at an authorized
Mercedes-Benz Center if a fault or defect occurs.Adjusting headlamp aim
Correct headlamp adjustment is extremely important.
To check and readjust a headlamp, follow steps 1
through 5.
Please note:
•Low beam adjustments simultaneously aim the high
beam.
•Vehicle should have a normal trunk load.
1. Park vehicle on level surface approximately 25 ft.
(7.6 m) from a vertical test screen or wall. The
centerline of the vehicle must be at a 90
° angle to
the test screen.
ProCarManuals.com
Page 302 of 341

299
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar careIndex
Vehicle careCleaning and care of the
vehicle ........................................300
Power washer .............................. 301
Paintwork, painted body
components ................................. 301
Engine cleaning ..........................302
Tar stains .....................................302
Vehicle washing .........................302
Ornamental moldings ................302
Headlamps, taillamps, turn signal
lenses ...........................................303
Window cleaning ........................303
Plastic and rubber parts ............303Wiper blade ................................ 303
Light alloy wheels ..................... 303
Instrument cluster ..................... 304
Steering wheel and gear selector
lever ............................................. 304
Cup holder .................................. 304
Seat belts ..................................... 304
Headliner .................................... 304
Upholstery .................................. 305
Hard plastic trim items ............. 305
Plastic and rubber parts ........... 305
Wind screen .............................. 305
Rubber weatherstrip ................ 305
Soft top ........................................ 306
ProCarManuals.com
Page 306 of 341

303 Cleaning and care of the vehicle
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar careIndex Headlamps, taillamps, turn signal lenses
Use a mild car wash detergent, such as Mercedes-Benz
approved Car Shampoo, with plenty of water.
To prevent scratches, never apply strong force and use
only a soft, non-scratchy cloth when cleaning the lenses.
Do not attempt to wipe dirty lenses with a dry cloth or
sponge.
Window cleaning
Use a window cleaning solution on all glass surfaces. An
automotive glass cleaner is recommended.
Note:
For safety reasons, switch off wiper and remove
electronic key from steering lock before cleaning the
windshield, otherwise the wiper motor can suddenly
turn on and cause injury.
Plastic and rubber parts
Do not use oil or wax on these parts.Wiper blade
Clean the wiper blade rubber with a clean cloth and
detergent solution.
Note:
For safety reasons, remove electronic key from steering
lock before cleaning the wiper blade, otherwise the
wiper motor can suddenly turn on and cause injury.
Light alloy wheels
Mercedes-Benz approved Wheel Care should be used for
regular cleaning of the light alloy wheels.
If possible, clean wheels once a week with Mercedes-
Benz approved Wheel Care, using a soft bristle brush
and a strong spray of water.
Follow instructions on container.
Note:
Use only acid-free cleaning materials. The acid could
lead to corrosion.
ProCarManuals.com
Page 331 of 341

328 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Capacities ................................................................... 316
ESP (Electronic stability program).... 207, 208, 216, 276
Control switch ........................................................... 218
Malfunction and warning messages ...................... 241
Malfunction indicator lamp..................................... 227
Synchronizing ........................................................... 217
Warning lamp ............................................................ 227
Express opening and closing
See Power windows .................................................. 143
Exterior lamp malfunction and
warning message .......................................................... 238
Exterior lamp switch ......................................................110
Exterior lamps ................................................................ 277
Adjusting headlamp aim .......................................... 282
Fog lamps ....................................................................110
Headlamps ..................... 110, 238, 239, 278, 282, 303
Low and high beam .......................................... 113, 279
Parking lamps ................................................... 110, 279
Replacing bulbs ......................................................... 277
Side marker lamp, front ........................................... 281
Standing lamps.................................................. 110, 279
Taillamp assemblies ................................................. 280
Turn signal lamp ............................................... 113, 279
FFirst aid kit ..................................................................... 246
Flat tire
See changing wheels ............................................... 263
Flexible service system (FSS) ...................................... 105
Fuel
Gasoline additives .................................................... 320
Premium unleaded gasoline.................... 176, 317, 319
Fuel cap placement warning ....................................... 226
Fuel filler flap
Manual release ......................................................... 296
Fuel requirements ......................................................... 319
Fuel reserve warning .................................................... 226
Fuels, coolants, lubricants etc. - capacities ............... 316
Fuse box ......................................................................... 248
Fuses, electrical ............................................................. 248GGarage door opener ....................................................... 154
Gasoline
Additives .................................................................... 320
Fuel requirements .................................................... 319
Premium unleaded.................................................... 319
ProCarManuals.com