ContentsSafety and Security........................... 61
Occupant safety................................... 62
Air bags .......................................... 63
Seat belts ....................................... 69
Active head restraints .................... 73
Children in the vehicle .................... 74
Blocking of rear side
window operation ........................... 85
Panic alarm .......................................... 86
Activating ....................................... 86
Deactivating ................................... 86
Driving safety systems ......................... 87
ABS ................................................ 87
BAS ................................................ 89
ESP
®.............................................. 90
Anti-theft systems................................ 93
Immobilizer..................................... 93
Anti-theft alarm system .................. 93
Tow-away alarm* ........................... 95
Controls in detail............................... 97
Locking and unlocking ......................... 98
SmartKey ....................................... 98
SmartKey with KEYLESS-GO* ...... 103
Opening the doors
from the inside ............................. 110
Opening the trunk ........................ 111
Closing the trunk.......................... 113
Trunk emergency release ............. 118
Valet locking ................................ 119
Automatic central locking ............ 120
Locking and unlocking
from the inside ............................. 121
Seats ................................................. 122
Front seat active head restraints . 122
Rear seat head restraints ............. 122
Multicontour seat* ....................... 125
Seat heating* ............................... 126
Seat ventilation* .......................... 127
Memory function ............................... 128
Storing positions into memory ..... 129
Recalling positions from memory . 129
Storing exterior rear view
mirror parking position................. 130Lighting ............................................. 131
Exterior lamp switch .................... 131
Combination switch ..................... 135
Corner-illuminating front
fog lamps* (CLK with
Bi-Xenon* headlamps)................. 135
Hazard warning flasher ................ 137
Interior lighting ............................ 138
Door entry lamps ......................... 139
Trunk lamp ................................... 139
Instrument cluster ............................. 140
Instrument cluster illumination .... 140
Coolant temperature indicator ..... 141
Trip odometer .............................. 141
Tachometer.................................. 142
Clock............................................ 142
Outside temperature indicator ..... 142
Control system .................................. 143
Multifunction display.................... 144
Multifunction steering wheel........ 144
Menus .......................................... 146
Standard display menu ................ 148
AUDIO menu ................................ 149
NAV* menu .................................. 150
Vehicle status
message memory menu ............... 151
ContentsDriving systems ................................. 254
Cruise control............................... 254
Parktronic system
(Parking assist)*, Canada only ..... 258
Loading .............................................. 262
Roof rack ...................................... 262
Ski sack* (Canada only) ............... 263
Split rear bench seat .................... 265
Loading instructions ..................... 267
Cargo tie-down rings .................... 268
Useful features .................................. 269
Storage compartments................. 269
Center armrest ............................. 271
Armrest in the
rear passenger compartment ....... 272
Cup holders .................................. 273
Ashtrays ....................................... 274
Cigarette lighter ........................... 276
Power outlet in the
rear passenger compartment ....... 277
Floormats* ................................... 277
Telephone*................................... 278
Tele Aid ........................................ 279
Garage door opener* ................... 287
Operation......................................... 293
The first 1 000 miles (1 500 km)......... 294
Driving instructions............................ 295
Drive sensibly – save fuel ............. 295
Drinking and driving ..................... 295
Pedals .......................................... 295
Power assistance ......................... 295
Brakes .......................................... 296
Driving off .................................... 297
Parking ......................................... 297
Tires ............................................. 298
Hydroplaning ................................ 299
Tire traction.................................. 299
Tire speed rating .......................... 300
Winter driving instructions ........... 300
Standing water ............................. 301
Passenger compartment .............. 302
Driving abroad.............................. 302
Control and operation
of radio transmitters .................... 302
Catalytic converter ....................... 303
Emission control .......................... 303
Coolant temperature .................... 304At the gas station .............................. 305
Refueling ...................................... 305
Check regularly
and before a long trip................... 307
Engine compartment ......................... 308
Hood ............................................ 308
Engine oil ..................................... 309
Transmission fluid level................ 313
Coolant ........................................ 314
Battery ......................................... 315
Windshield washer system and
headlamp cleaning system*......... 316
Tires and wheels................................ 317
Important guidelines .................... 317
Tire care and maintenance........... 318
Direction of rotation..................... 320
Loading the vehicle ...................... 320
Recommended
tire inflation pressure ................... 326
Checking tire inflation pressure ... 328
MOExtended system* .................. 332
Tire labeling ................................. 332
Load identification ....................... 336
DOT, Tire Identification Number
(TIN) ............................................. 337
Maximum tire load ....................... 338
ContentsTowing the vehicle ............................. 432
Towing the vehicle........................ 432
Installing towing eye bolt.............. 434
Fuses ................................................. 436
Aids for replacing fuses ................ 436
Main fuse box in passenger
compartment................................ 437
Fuse box in engine compartment . 437
Fuse box in trunk.......................... 438
Technical data................................. 439
Parts service ...................................... 440
Warranty coverage............................. 441
Loss of Service and Warranty
Information Booklet ..................... 441
Identification labels ........................... 442
Layout of poly-V-belt drive ................. 443
CLK 350 ....................................... 443
CLK 500 ....................................... 443
Engine................................................ 444
Rims and tires.................................... 445
Same size tires ............................. 447
Mixed size tires ............................ 448
Minispare wheel ........................... 449
Electrical system ............................... 450
Main dimensions and weights............ 451
Main dimensions .......................... 451
Weights ........................................ 451Fuels, coolants, lubricants, etc. ......... 452
Capacities .................................... 452
Engine oils ................................... 454
Engine oil additives ...................... 454
Air conditioning refrigerant .......... 454
Brake fluid.................................... 454
Premium unleaded gasoline ......... 455
Fuel requirements ........................ 455
Gasoline additives ........................ 456
Coolants ...................................... 457
Windshield washer system and
headlamp cleaning system*......... 459
Technical terms............................... 461Index................................................. 467
25 At a glance
Instrument cluster
Item
Page
1
LLeft turn signal indica-
tor lamp
53
2
vESP
® warning lamp
365
3
Speedometer
4
Multifunction display
144
5
lDistance warning
lamp
Warning lamp without func-
tion. It illuminates with the ig-
nition on. It should go out
when the engine is running.
6
KRight turn signal indi-
cator lamp
53
7
Coolant temperature indi-
cator with:
141
•Coolant temperature
warning lamp
364,
385
Item
Page
8
Tachometer with:
142
1Supplemental
Restraint System
(SRS) indicator lamp
367,
395
-Antilock Brake Sys-
tem (ABS) indicator
lamp
360
366
AHigh beam headlamp
indicator lamp
135
BLow beam headlamp
indicator lamp
135
9
Main odometer with:
Gear selector lever posi-
tion
171
Program mode
176
Item
Page
a
Clock with:
157
;Brake warning lamp,
USA only
361
3Brake warning lamp,
Canada onlyúEngine malfunction in-
dicator lamp,
USA only
362
±Engine malfunction in-
dicator lamp,
Canada only
362
b
Fuel display with:AFuel reserve warning
lamp
365
c
Reset button for:
Resetting trip odometer
141
Adjusting instrument
cluster illumination
140
Confirming new time set-
tings
157
56 Getting startedDrivingProblems while driving
The engine runs erratically and misfires
An ignition cable may be damaged.
The engine electronics may not be op-
erating properly.
Unburned gasoline may have entered
the catalytic converter and damaged it.
Give very little gas.
Have the problem repaired by an au-
thorized Mercedes-Benz Center as
soon as possible.The coolant temperature is
above 248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.
Stop the vehicle in a safe location as
soon as possible and turn off the en-
gine. Allow engine and coolant to cool.
Check the coolant level and add
coolant if necessary (
page 314).In case of accident
If the vehicle is leaking gasoline:
Do not start the engine under any cir-
cumstances.
Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:
Notify an authorized Mercedes-Benz
Center.
If no damage can be determined on the
major assemblies
fuel system
engine mount:
Start the engine in the usual manner.
141 Controls in detail
Instrument cluster
Coolant temperature indicator
The coolant temperature indicator is on
the right side in the instrument cluster
(page 24).
Trip odometer
Make sure you are viewing the stan-
dard display in the multifunction dis-
play (
page 148).
If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel repeatedly until the standard dis-
play appears (
page 144).
Press and hold the reset button on the
instrument cluster (
page 140) until
the trip odometer is reset.
Warning!
G
Driving when your engine is overheated
can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously
burned.
Steam from an overheated engine can
cause serious burns which can occur
just by opening the hood. Stay away
from the engine if you see or hear steam
coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of
the vehicle and do not stand near the vehicle
until the engine has cooled down.
!Excessive coolant temperature triggers
a warning in the multifunction display
(page 385) and the red coolant warn-
ing lamp in the instrument cluster
comes on (
page 364).
The engine should not be operated with
the coolant temperature above 248°F
(120°C). Doing so may cause serious
engine damage which is not covered by
the Mercedes-Benz Limited Warranty.
iDuring severe operating conditions,
e.g. stop-and-go traffic, the coolant
temperature may rise close to 248°F
(120°C).
207 Controls in detail
Automatic climate control (CLK 500)
Residual heat and ventilation* (Canada only)
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.Activating
Switch off the ignition (
page 36).
Press button9(
page 197).
The indicator lamp on the button
comes on.Deactivating
Press button9(
page 197).
The indicator lamp on the button goes
out.
The residual heat is automatically turned
off:
when the ignition is switched on
after about 30 minutes
if the battery voltage drops
iHow long the system will provide
heating depends on
the coolant temperature
the temperature set by the operator
The blower will run at speed setting 1
regardless of the air distribution
control setting.
304 OperationDriving instructions
Coolant temperature
During severe operating conditions and
stop-and-go city traffic, the coolant
temperature may rise close to
approximately 248°F (120°C).
The engine should not be operated with
the coolant temperature over 248°F
(120°C). Doing so may cause serious
engine damage which is not covered by the
Mercedes-Benz Limited Warranty.
Warning!
G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide (CO), and inhaling it can cause un-
consciousness and lead to death.
Do not run the engine in confined areas
(such as a garage) which are not properly
ventilated. If you think that exhaust gas
fumes are entering the vehicle while driving,
have the cause determined and corrected
immediately. If you must drive under these
conditions, drive with at least one window
fully open at all times.
Warning!
G
Driving when your engine is overheated
can cause some fluids, which may have
leaked into the engine compartment, to
catch fire. You could be seriously
burned.
Steam from an overheated engine can
cause serious burns which can occur
just by opening the hood. Stay away
from the engine if you see or hear steam
coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.