Page 5 of 323

Malfunction and indicator lamps in the
center console 221Practical hintsJump starting 263
AIRBAG OFF indicator lamp 221 First aid kit 238 Towing the vehicle 265
Roll bar warning lamp 221 Shelf below rear window 238 Transmission selector lever,
manually unlocking 268
Malfunction and warning messages in
the multifunction display 222Stowing things in the vehicle 238 Bulbs 269
DISPLAY DEFECTIVE (engine
control unit) 223Luggage cover 238 Adjusting headlamp aim 274
DISPLAY DEFECTIVE (several
systems) 223Spare wheel, vehicle tools, storage
compartment 240Changing batteries in the
electronic main key 277
BATTERY/ALTERNATOR 224 Vehicle jack 241 Raising soft top manually 280
ABS-SYSTEM 225 Fuses 242 Antenna 287
BRAKE ASSIST 225 Hood 244 Manual release for fuel filler
BRAKE LINING WEAR 226 Checking engine oil level 246 flap 287
BRAKE FLUID 226 Automatic transmission fluid level 247 Trunk lamp 288
PARKING BRAKE 227 Coolant level 247 Replacing wiper blade insert 288
ENGINE FAN 227 Adding coolant 248
COOLANT (coolant level) 228
Windshield washer / headlamp clean.system
249
Vehicle care
COOLANT TEMP. (coolant
temperature) 229Windshield and headlamp washer fluid
mixing ratio 249Cleaning and care of the vehicle 292
LIGHTING SYSTEM 230 Wheels 250 Engine cleaning 293
LIGHT SENSOR 231 Tire replacement 250 Vehicle washing 293
STEER. WHEEL ADJUST. 231 Rotating wheels 251 Power washer 293
OIL TEMP. 232 Spare wheel 252 Plastic and rubber parts 293
ENGINE OIL LEVEL 232 Changing wheels 254 Tar stains 294
ELEC. STABIL. PROG. (Electronic
stability program) 234Tire inflation pressure 259 Window cleaning 294
WASHER FLUID 235 Battery 261
5
Page 6 of 323
Headlamps, taillamps, turn signal
lenses 294Technical data
Wiper blade 294 Spare parts service 300 Coolants 311
Seat belts 294 Warranty coverage 300 Consumer information 313
Headliner 294 Identification labels301 Uniform tire quality grading 313
Instrument cluster 294 Layout of poly-V-belt drive 302 Index 315
Steering wheel and gear selector lever 295 Technical data 303
Hard plastic trim items 295 Fuels, coolants, lubricants etc. –
capacities 307
Upholstery 295 Engine oils 309
Ornamental moldings 295 Engine oil additives 309
Paintwork, painted body components 296 Air conditioner refrigerant 309
Light alloy wheels 296 Brake fluid 309
Soft top 297 Premium unleaded gasoline 310
Wind screen 298 Fuel requirements 310
Rubber weatherstrip 298 Gasoline additives 311
6
Page 176 of 323

Tele Aid
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index In the event of an ETR or airbag deployment, if the
system cannot connect to the Emergency Response
Center, it will attempt to contact 9-1-1. Close the
cover (1) after the emergency call is concluded.
Wa r n i n g !
If you feel at any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle, vehicle in
a dangerous road location), please do not wait for
voice contact after you have pressed the emergency
button. Carefully leave the vehicle and move to a
safe location. The Response Center will
automatically contact local emergency officials
with the vehicle’s approximate location
Roadside Assistance button •
Located below the center armrest cover is the Roadside
Assistance button•. Pressing and holding the
button (for longer than 2 seconds) will initiate a call to a
Mercedes-Benz Roadside Assistance dispatcher. The
button will flash while the call is in progress. The
message “ROADSIDE ASSISTANCE – CONNECTING
CALL” will appear in the multifunction display. When the connection is established, the message “ROADSIDE
ASSISTANCE – CALL CONNECTED” appears in the
multifunction display. The Tele Aid system will transmit
data generating the vehicle identification number,
model, color and location (subject to availability of
cellular and GPS signals).
A voice connection between the Roadside Assistance
dispatcher and the occupants of the vehicle will be
established. The nature of the need for assistance
can then be described.
.
For services such as labor and/or towing charges
may apply.Refer to the Roadside Assistance manual
for moreinformation. Sign and Drive services: Services such as jump start,
a few gallons of fuel or the replacement of a f lat tire
with the vehicle spare tire are obtainable
176
Page 209 of 323

Driving systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 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.ESP control switch
ESP control switch located on center console.
To improve the vehicle’s traction when driving with
snow chains, or starting off in deep snow, sand or gravel,
switch off ESP by pressing the upper half of the ESP
switch. The ESP warning lamp , located in the
speedometer dial, is continuously illuminated.
P54.25-2037-26
209
Page 237 of 323
Practical hints
Changing wheels 254
First aid kit 238 Tire inflation pressure 259
Shelf below rear window 238 Battery 261
Stowing things in the vehicle 238 Jump starting 263
Luggage cover 238 Towing the vehicle 265
Spare wheel, vehicle tools, storage compartment 240 Transmission selector lever, manually unlocking 268
Vehicle jack 241 Bulbs 269
Fuses 242 Adjusting headlamp aim 274
Hood 244 Changing batteries in the electronic main key 277
Checking engine oil level 246 Raising soft top manually 280
Automatic transmission fluid level 247 Antenna 287
Coolant level 247 Manual release for fuel filler flap 287
Adding coolant 248 Trunk lamp 288
Windshield washer / headlamp clean.system
249 Replacing wiper blade insert 288
Windshield and headlamp washer fluid mixing ratio 249
Wheels 250
Tire replacement 250
Rotating wheels 251
Spare wheel 252
237
Page 240 of 323
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.
240
Page 252 of 323

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 flat 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”
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.
252
Page 253 of 323

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”
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.
253