2005 MERCEDES-BENZ CLK320 COUPE snow chains

Contents
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 336
Tire ply material ........................... 337
Tire and loading terminology ........ 338
Rotating tires ............................... 341
Winter driving .................................... 342
Winter tires .................................. 342
Block heater (Canada only) .......... 343
Snow chains................................. 343
Maintenance...................................... 344
Clearing the maintenance
service indicator........................... 345
Maintenance
service term exceeded ................. 345
Calling up the
maintenance service indicator ..... 345
Resetting the
maintenance service indicator ..... 346
Vehicle care ....................................... 347
Cleaning and care of vehicle ........ 347
Practical hints.................................. 353
What to do if …? ................................. 354
Lamps in instrument cluster ......... 354
Lamp in center console................. 360
Vehicle status messages
in the multifunction display........... 362
Where will I find...? ............................. 389
First aid kit.................................... 389
Vehicle tool kit .............................. 389
Minispare wheel
(except CLK 55 AMG) ................... 393
Collapsible tire
(CLK 55 AMG only) ....................... 394
Spare wheel bolts ......................... 396
Unlocking/locking in an emergency... 397
Unlocking the vehicle.................... 397
Locking the vehicle ....................... 398
Fuel filler flap ................................ 399
Manually unlocking
the gear selector lever .................. 400Opening/closing in an emergency ..... 401
Power tilt/sliding sunroof* ........... 401
Replacing batteries in the SmartKey/
SmartKey with KEYLESS-GO*............. 402
SmartKey ...................................... 402
SmartKey with KEYLESS-GO* ....... 403
Replacing bulbs .................................. 404
Bulbs............................................. 404
Replacing bulbs for front lamps .... 406
Replacing bulbs for rear lamps ..... 410
Replacing wiper blades ...................... 411
Removing wiper blades ................. 411
Installing wiper blades .................. 411
Flat tire............................................... 412
Preparing the vehicle .................... 412
Mounting the spare wheel ............ 413

84 Safety and SecurityDriving 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)
ABS
The A
ntilock B
rake S
ystem (ABS) regulates
the brake pressure so that the wheels do
not lock during braking. This allows you to
maintain the ability to steer your vehicle.
The ABS is functional above a speed of ap-
proximately 5 mph (8 km/h) independent
of road surface conditions.
On slippery road surfaces, the ABS will
respond even to light brake pressure.
The - indicator lamp in the instrument
cluster (
page 24) comes on when you
switch on ignition. It goes out when the
engine is running.
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
required.
Warning!
G
The following factors increase the risk of
accidents:

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
prevailing road and weather conditions.
Warning!
G
Do not pump the brake pedal. Use firm,
steady brake pedal pressure instead. Pump-
ing the brake pedal defeats the purpose of
the ABS and significantly reduces braking
effectiveness.

87 Safety and Security
Driving safety systems
For more information, see “Practical hints”
(page 353).Switching off the ESP
To improve the vehicle’s traction, turn off
the ESP in driving situations where it would
be advantageous to have the drive wheels
spin and thus cut into surfaces for better
grip such as:


starting out on slippery surfaces and in
deep snow in conjunction with snow
chains


sand or gravel
Warning!
G
The ESP cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The ESP
cannot prevent accidents, including those
resulting from excessive speed in turns or
hydroplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The
capabilities of an ESP equipped vehicle must
never be exploited in a reckless or danger-
ous manner which could jeopardize the
user’s safety or the safety of others.
!Because of the ESP’s automatic
operation, the engine must be shut off
when

the parking brake is being tested on
a brake test dynamometer


the vehicle is being towed with the
front axle raised
Active braking action through the ESP
may otherwise seriously damage the
brake system.
iThe ESP will only function properly if
you use wheels of the recommended
tire size.
Warning!
G
The ESP should not be switched off during
normal driving other than in the circum-
stances described below. Disabling of the
system will reduce vehicle stability in stan-
dard driving maneuvers.!Turn on the ESP immediately if the
aforementioned circumstances do not
apply anymore.

301 Operation
Driving instructions
Winter driving instructions
The most important rule for slippery or icy
roads is to drive sensibly and to avoid
abrupt acceleration, braking and steering
maneuvers. Do not use the cruise control
system under such conditions.
When the vehicle is in danger of skidding,
move gear selector lever to position N. Try
to keep the vehicle under control by cor-
rective steering action.Road salts and chemicals can adversely af-
fect braking efficiency. Increased pedal
force may become necessary to produce
the normal braking effect.
Depressing the brake pedal periodically
when traveling at length on salt-strewn
roads can bring road-salt-impaired braking
efficiency back to normal.
If the vehicle is parked after being driven
on salt-treated roads, the braking efficien-
cy should be tested as soon as possible af-
ter driving is resumed.
For more information, see “Winter driving”
(
page 342).
iFor information on driving with snow
chains, see “Snow chains”
(page 343).
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of control loss.
Warning
G
Make sure not to endanger any other road
users when carrying out these braking ma-
neuvers.
Warning!
G
If the vehicle becomes stuck in snow, make
sure snow is kept clear of the exhaust pipe
and from around the vehicle with the engine
running. Otherwise, deadly carbon monox-
ide (CO) gases may enter vehicle interior re-
sulting in unconsciousness and death.
To assure sufficient fresh air ventilation,
open a window slightly on the side of the ve-
hicle not facing the wind.Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose. In-
dicated temperatures just above the freez-
ing point do not guarantee that the road
surface is free of ice.

343 Operation
Winter driving
Block heater (Canada only)
The engine is equipped with a block
heater.
The electrical cable may be installed at an
authorized Mercedes-Benz Center.
Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not to
exceed 30 mph (50 km/h). Remove chains
as soon as possible when driving on roads
without snow.
Please observe the following guidelines
when using snow chains:

Use of snow chains is not permissible
with all wheel/tire combinations.


Snow chains should only be used on
the rear wheels. Follow the manufac-
turer’s mounting instructions.


Only use snow chains that are
approved by Mercedes-Benz. Your
authorized Mercedes-Benz Center will
be glad to advise you on this subject.


Use of snow chains may be prohibited
depending on location. Always check
local and state laws before installing
snow chains.
iWhen driving with snow chains, you
may wish to deactivate the ESP
(page 87) before setting the vehicle
in motion. This will improve the
vehicle’s traction.
!Use of snow chains is not permissible
with tire sizes:

225/50 R16 92H


245/40 R17 91W


245/40 R17 91Y


255/35 R18 94Y


T 125/90 R 16 98M


T 125/80 R17 99M

441 Technical data
Rims and tires
Mixed size tires
CLK 320
CLK 320 (Appearance Package)
CLK 500
Front axle:Rims (light alloy)
7 J x 16 H2
71/2 J x 17 H2
71/2 J x 17 H2
Wheel offset
1.45 in (37 mm)
1.42 in (36 mm)
1.45 in (37 mm)
1
1Applies to AMG wheel onlySummer tires
(radial-ply tires)
-
225/45 R17 91W
225/45 ZR17 91Y
All-season tires
(radial-ply tires)
205/55 R16 91H M+S
-
-
Rear axle:Rims (light alloy)
8 J x 16 H2
81/2 J x17 H2
81/2 J x17 H2
Wheel offset
1.26 in (32 mm)
1.18 in (30 mm)
1.18 in (30 mm)
Summer tires (radial-ply
tires)
-
245/40 R17 91W
2
2Must not be used with snow chains.
245/40 ZR17 91Y
2
All-season tires
(radial-ply tires)
225/50 R16 92H M+S
2
-
-

442 Technical dataRims and tires
CLK 55 AMG
Front axle:Rims (light alloy)
71/2 Jx18EH2
Wheel offset
1.45 in (37 mm)
1
Summer tires
(radial-ply tires)
225/40 ZR18 92Y XL (Extra Load)
2
All-season tires
(radial-ply tires)
-
Rear axle:Rims (light alloy)
81/2 Jx18EH2
Wheel offset
1.18 in (30 mm)
Summer tires (radial-ply
tires)
255/35 ZR18 94Y XL (Extra Load)
2
All-season tires
(radial-ply tires)
-
1Applies to AMG wheel only.2Must not be used with snow chains.

443 Technical data
Rims and tires
Minispare wheel (except CLK 55 AMG)Collapsible tire (CLK 55 AMG only)
CLK 320
CLK 320 (Appearance Package*)
CLK 500
Rim
3.5 B x 16 H2
3.5 B x 17 H2
Wheel offset
0.67 in (17 mm)
0.67 in (17 mm)
Tire
T 125/90 R 16 98M
1
1Must not be used with snow chains.
T 125/80 R 17 99M
1
Model
CLK 55 AMG
Rim (steel)
4.5 B x 17 H2
Wheel offset
0.47 in (12 mm)
Tire
145/70 - 17 92P
1