
5 ContentsSpare 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 ..................283
Adjusting headlamp aim ...............285
Changing batteries in
the electronic main key ...........288
Synchronizing
remote control ...........................290Raising soft top manually ............ 291
Antenna .......................................... 298
Manual release for
fuel filler flap ............................ 298
Trunk lamp ..................................... 299
Replacing wiper
blade insert ............................... 299
Vehicle careCleaning and care
of the vehicle ............................. 302
Power washer ............................. 303
Paintwork, painted body
components ................................ 303
Engine cleaning ......................... 304
Tar stains .................................... 304
Vehicle washing ......................... 304
Ornamental moldings ............... 304
Headlamps, taillamps,
turn signal lenses ...................... 305Window cleaning .......................305
Plastic and rubber parts ............305
Wiper blade .................................305
Light alloy wheels ......................305
Instrument cluster .....................306
Steering wheel and
gear selector lever ......................306
Cup holder ...................................306
Seat belts .....................................306
Headliner .....................................306
Upholstery ...................................307
Hard plastic trim items .............307
Plastic and rubber parts ............307
Wind screen ...............................307
Rubber weatherstrip .................307
Soft top .........................................308

221 Driving systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
The malfunction indicator lamp¿ for the ESP is
combined with that of the BAS.
The yellow BAS/ESP malfunction indicator lamp in the
instrument cluster and the yellow ESP warning
lampv in the speedometer dial come on with the
electronic key in steering lock position 2. They should
go out with the engine running.
If the BAS/ESP malfunction indicator lamp comes on
continuously with the engine running, a malfunction
has been detected in either system. Only partial engine
output will be available.
If the BAS malfunctions, the brake system functions in
the usual manner, but without BAS.
If the ESP warning message is displayed, have the BAS
or ESP checked at your authorized Mercedes-Benz
Center as soon as possible.
For ESP warning message, see page 245.
With the ABS malfunctioning, the ESP is also switched
off.Driving the vehicle with varied size tires will cause the
wheels to rotate at different speeds, therefore the ESP
may activate (yellow ESP warning lamp in speedometer
dial comes on). For this reason, all wheels, including the
spare wheel, must have the same tire outside diameter.
When testing the parking brake on a brake test
dynamometer, the engine must be shut off. Otherwise,
the ESP will immediately be engaged and will apply the
rear wheel brakes.
In winter operation, the maximum effectiveness of the
ESP is only achieved with Mercedes-Benz recommended
M+S rated radial-ply tires and/or snow chains.
Synchronizing ESP
If the power supply was interrupted (battery
disconnected or empty), the BAS/ESP malfunction
indicator lamp may be illuminated with the engine
running.
Turn steering wheel completely to the left and then to
the right. The BAS/ESP malfunction indicator lamp
should go out.

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

260 Spare wheel, vehicle jack
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Spare wheel, vehicle tools, storage compartment
1Trunk floor
2Handle
3Luggage bowl
4Ve h i c l e t o o l sLift trunk floor and engage handle in grip molding of
luggage cover.
To remove spare tire:
Turn luggage bowl counterclockwise and remove.
To store spare tire:
Place spare tire in wheel well and secure it with luggage
bowl. Turn luggage bowl clockwise to its stop.
Note:
Always lower trunk f loor before closing trunk lid.

261 Spare wheel, vehicle jack
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Ve h i c l e j a c k
1Jack arm
2Jack base
See illustration for proper storage of jack.
Before storing the jack on the felt in the spare wheel
well, the jack arm must be lowered almost to the base of
the jack.
1
2
P40.10-2027-26
Wa r n i n g !
The jack is designed exclusively for jacking up the
veh icle at th e jack tu bes bu ilt into eit her side of th e
vehicle. To help avoid personal injury, use the jack
only to lift the vehicle during a wheel change.
Never get beneath the vehicle while it is supported
by t he jack. Keep hands and feet away from th e area
under the lifted vehicle. Always firmly set parking
brake and block wheels before raising vehicle with
jack.Do not disengage parki ng brake wh ile th e vehi cle i s
raised. Be certain that the jack is always vertical
when in use, especially on hills. Always try to use
the jack on level surface. Be sure that the jack arm
is fully inserted in the jack tube. Always lower the
vehicle onto sufficient capacity jackstands before
working under the vehicle.

264 Tires, Wheels
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Spare wheel
Spare wheel CLK 320
Important!
The spare wheel rim is mounted with a full size tire of
the same type as on the vehicle, and is fully functional.
However, that spare wheel rim is weight optimized and
has a limited service life of 12 000 miles (20 000 km)
use before a standard wheel rim must replace it.
In the case of a f lat tire, you may temporarily use the
spare wheel.
Do not operate vehicle with more than one spare wheel
mounted.Unid irectional tires must a lways be mou nted w it h a rrow
on tire sidewall pointing in direction of vehicle forward
movement.
If the arrow on tire side wall does not point in direction
of vehicle forward movement when using the spare
wheel, observe the following restriction:
•Drive to the nearest tire repair facility as soon as
possible.
For rim and tire specifications, refer to “Technical Data”
(page 314).
Wa r n i n g !
The spare wheel rim is for temporary use only. Use
for over a total of 12 000 miles (20 000 km)
(aggregate of all uses) may cause wheel rim failure
leading to an accident and possible injuries.

265 Tires, Wheels
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Spare wheel CLK 430
Important!
The spare wheel rim size is 7
1/2J x 17 H 2.
The spare wheel rim is mounted with a full size tire of
the same type as on the vehicle’s front axle, and is fully
functional. However, that spare wheel rim is weight
optimized and has a limited service life of 12 000 miles
(20 000 km) use before a standard wheel rim must
replace it.
If the arrow on tire side wall does not point in direction
of vehicle forward movement when using the spare
wheel, observe the following restriction:
•Drive to the nearest tire repair facility as soon as
possible.
In the case of a rear axle f lat tire, you may temporarily
use the spare wheel, when observing the following
restrictions:
•Do not exceed vehicle speed of 50 mph (80 km/h)
•Drive to the nearest tire repair facility to have the
flat tire repaired or replaced as appropriate.Do not operate vehicle with more than one spare wheel
mounted.
Unid irectional tires must a lways be mou nted w it h a rrow
on tire sidewall pointing in direction of vehicle forward
movement.
For rim and tire specifications, refer to “Technical Data”
(page 314).
Wa r n i n g !
The spare wheel rim is for temporary use only. Use
for over a total of 12 000 miles (20 000 km)
(aggregate of all uses) may cause wheel rim failure
leading to an accident and possible injuries.The dimensions of the spare wheel are different
from those of the road wheels for the rear axle. As a
result, the vehicle handling characteristics change
when driving with a spare wheel mounted on the
rear axle.The spare wheel should only be used temporarily,
and replaced with a regular road wheel as quick as
possible.

270 Tires, Wheels
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Notes:
Before storing the jack, the jack arm must be lowered
almost to the base of the jack.
For proper storage of vehicle jack see page 261.
Wa r n i n g !
Always replace wheel bolts that are damaged or
rusted.Never apply oil or grease to wheel bolts.Damaged wheel hub threads should be repaired
immediately.Incorrect mounting bolts or improperly tightened
mounting bolts can cause the wheel to come off.
This could cause an accident. Be sure to use the
correct mounting bolts.
Wa r n i n g !
The spare wheel rim is for temporary use only. Use
for over a total of 12 000 miles (20 000 km)
(aggregate of all uses) may cause wheel rim failure
leading to an accident and possible injuries.