Page 6 of 464

ContentsLoading ..............................................  245
Ski sack* ......................................  245
Loading instructions .....................  249
Useful features ..................................  250
Interior storage spaces ................  250
Ashtrays .......................................  253
Cigarette lighter ...........................  254
Floormats* ...................................  255
Telephone*...................................  256
Tele Aid* ......................................  257
Garage door opener .....................  265
Operation.........................................  271
The first 1 000 miles (1 500 km).........  272
Driving instructions............................  273
Drive sensibly – save fuel .............  273
Drinking and driving .....................  273
Pedals ..........................................  273
Power assistance .........................  273
Brakes ..........................................  274
Driving off ....................................  275
Parking .........................................  275
Tires .............................................  276
Hydroplaning ................................  277
Tire traction..................................  277
Tire speed rating ..........................  278
Winter driving instructions ...........  279
Standing water .............................  280
Passenger compartment ..............  280
Driving abroad..............................  280
Control and operation 
of radio transmitters ....................  281
Catalytic converter .......................  281
Emission control ..........................  282
Coolant temperature ....................  283At the gas station ..............................  284
Refueling ......................................  284
Check regularly and 
before a long trip .........................  286
Engine compartment .........................  287
Hood ............................................  287
Engine oil .....................................  288
Transmission fluid level ................  291
Coolant ........................................  292
Battery .........................................  294
Windshield washer system and 
headlamp cleaning system*.........  295
Tires and wheels................................  296
Important guidelines ....................  297
Life of tires...................................  297
Direction of rotation.....................  297
Checking tire inflation pressure ...  298
Rotating wheels ...........................  299
Winter driving ....................................  300
Winter tires ..................................  300
Block heater*...............................  301
Snow chains.................................  301 
     
        
        Page 76 of 464
76 Safety and SecurityDriving safety systems
Driving safety systemsIn this section you will find information on 
the following driving safety systems:
ABS (A
ntilock B
rake S
ystem)
BAS (B
rake A
ssist S
ystem)
ESP (E
lectronic S
tability P
rogram)
iIn winter operation, the maximum ef-
fectiveness of the ABS, the BAS, and 
the ESP is only achieved with winter 
tires (M + S tires) or snow chains as re-
quired.
Warning!
G
The following factors increase the risk of ac-
cidents:
Excessive speed, especially in turns
Wet and slippery road surfaces
Following another vehicle too closely
The ABS, BAS, and ESP cannot reduce this 
risk.
Always adjust your driving style to the pre-
vailing road and weather conditions. 
     
        
        Page 271 of 464
271 Operation
The first 1 000 miles (1 500 km)
Driving instructions
At the gas station
Engine compartment
Tires and wheels
Winter driving
Maintenance
Vehicle care 
     
        
        Page 277 of 464

277 Operation
Driving instructions
Specified tire pressures must be main-
tained. This applies particularly if the tires 
are subject to extreme operating condi-
tions (e.g. high speeds, heavy loads, high 
ambient temperatures).Hydroplaning
Depending on the depth of the water layer 
on the road, hydroplaning may occur, even 
at low speeds and with new tires. Reduce 
vehicle speed, avoid track grooves in the 
road and apply brakes cautiously in the 
rain.
Tire traction
The safe speed on a wet, snow covered or 
icy road is always lower than on a dry road. 
You should pay particular attention to the 
condition of the road whenever the outside 
temperatures are close to the freezing 
point.Mercedes-Benz recommends M+S rated 
radial-ply tires with a minimum tread depth 
of approximately 
1/6in (4 mm) on all four 
wheels for the winter season to ensure 
normal balanced handling characteristics. 
On packed snow, they can reduce your 
stopping distance compared to summer 
tires. Stopping distance, however, is still 
considerably greater than when the road is 
not covered with snow or ice. Exercise ap-
propriate caution.
Warning!
G
Do not drive with a flat tire. A flat tire affects 
the ability to steer or brake the vehicle. You 
may lose control of the vehicle. Continued 
driving with a flat tire or driving at high 
speed with a flat tire will cause excessive 
heat build-up and possibly a fire.
Warning!
G
If ice has formed on the road, tire traction 
will be substantially reduced. Under such 
weather conditions, drive, steer and brake 
with extreme caution. 
     
        
        Page 278 of 464

278 OperationDriving instructionsTire speed rating 
Regardless of the tire rating, local speed 
limits should be obeyed. Use prudent driv-
ing speeds appropriate to prevailing condi-
tions.CLK 320
Your vehicle is factory equipped with 
“H”-rated tires, which have a speed rating 
of 130 mph (210 km/h) or with “W”-rated 
tires*, which have a speed rating of 
168 mph (270 km/h).
An electronic speed limiter prevents your 
vehicle from exceeding a speed of 
130 mph (210 km/h).
 CLK 320 with Appearance Package*
Your vehicle is factory equipped with 
“W”-rated tires, which have a speed rating 
of 168 mph (270 km/h).
An electronic speed limiter prevents your 
vehicle from exceeding a speed of 
130 mph (210 km/h).CLK 500
Your vehicle is factory equipped with 
“Y”-rated tires, which have a speed rating 
of 186 mph (300 km/h).
An electronic speed limiter prevents your 
vehicle from exceeding a speed of 
130 mph (210 km/h).
CLK 55 AMG
Your vehicle is factory equipped with 
“Y”-rated tires, which have a speed rating 
of 186 mph (300 km/h).
An electronic speed limiter prevents your 
vehicle from exceeding a speed of 
155 mph (250 km/h).Warning!
G
Even when permitted by law, never operate 
a vehicle at speeds greater than the maxi-
mum speed rating of the tires.
Exceeding the maximum speed for which 
tires are rated can lead to sudden tire fail-
ure, causing loss of vehicle control and pos-
sibly resulting in an accident and/or 
personal injury and possible death, for you 
and for others.
iFor information on tire speed rating for 
winter tires, see “Winter tires” 
(page 300). 
     
        
        Page 296 of 464

296 OperationTires and wheels
Tires and wheelsSee your authorized Mercedes-Benz 
Center for information on tested and rec-
ommended rims and tires for summer and 
winter operation. They can also offer ad-
vice concerning tire service and purchase.Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous 
damage cannot always be recognized on 
retreads. Mercedes-Benz can therefore 
not assure the operating safety of the vehi-
cle when such tires are used.Warning!
G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the 
original part. See your authorized 
Mercedes-Benz Center for further informa-
tion. If incorrectly sized rims and tires are 
mounted:
The wheel brakes or suspension compo-
nents can be damaged.
The correct operating clearance of the 
wheels and tires is no longer guaran-
teed.
Warning!
G
Worn, old tires can cause accidents. If the 
tire tread is badly worn, or if the tires have 
sustained damage, replace them.
When replacing rims, only use genuine 
Mercedes-Benz wheel bolts specified for the 
particular rim type. Failure to do so can re-
sult in the bolts loosening and possibly an 
accident. 
     
        
        Page 300 of 464

300 OperationWinter driving
Winter drivingBefore the onset of winter, have your vehi-
cle winterized at an authorized 
Mercedes-Benz Center. This service in-
cludes:
Check of anticorrosion and antifreeze 
concentration.
Addition of cleaning concentrate to the 
water of the windshield and headlamp 
cleaning system. Add MB Concentrate 
“S” to a premixed windshield washer 
solvent / antifreeze which is formulated 
for temperatures below freezing point 
(page 416).
Battery test. Battery capacity drops 
with decreasing ambient temperature. 
A well charged battery helps to ensure 
that the engine can be started even at 
low ambient temperatures.
Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a 
minimum tread depth of approximately 1/6 in (4 mm) on all four wheels for the 
winter season.
Winter tires
Always use winter tires at temperatures 
below 45°F (7°C) and whenever wintry 
road conditions prevail. Use of winter tires 
is the only way to achieve the maximum ef-
fectiveness of the ABS and the ESP in win-
ter operation.
For safe handling, ensure that all mounted 
winter tires are of the same make and have 
the same tread design.Always observe the speed rating of the 
winter tires installed on your vehicle. If the 
maximum speed for which your tires are 
rated is below the speed rating of your ve-
hicle, you must place a notice to this effect 
where it will be seen by the driver. Such no-
tices are available at your tire dealer or any 
authorized Mercedes-Benz Center.Warning!
G
Winter tires with a tread depth under 
1/6in 
(4 mm) must be replaced. They are no long-
er suitable for winter operation.
Warning!
G
If you use your spare tire when winter tires 
are fitted on the other wheels, be aware that 
the difference in tire characteristics may 
very well impair turning stability and that 
overall driving stability may be reduced. 
Adapt your driving style accordingly.
Have the spare tire replaced with a winter 
tire at the nearest authorized 
Mercedes-Benz Center. 
     
        
        Page 404 of 464
404 Technical dataRims and tiresSame size tires
16" tires
17" tires
CLK 320
CLK 500
CLK 320 (Appearance Package*)
CLK 55 AMG
Rims (light alloy)
7J x 16 H2
 -
 -
Wheel offset
1.45 in (37 mm)
 -
 -
Winter tires (radial-ply 
tires)
205/55 R16 91H M+S
 -
 -
CLK 320
CLK 320 (Appearance Package*)
CLK 500
CLK 55 AMG
Rims (light alloy)
71/2 J x 17 H2
71/2 J x 17 H2
71/2 Jx17H2
Wheel offset
1.42 in (36 mm)
1.45 in (37 mm)
1.45 in (37 mm)
Winter tires (radial-ply 
tires)
225/45 R 17 91 H M+S
1
225/45 R 17 91 H M+S
1
225 / 45 R17 91 H M+S
1
1Must not be used with snow chains.