2003 MERCEDES-BENZ SLK CLASS spare wheel

Contents
Installing....................................... 228
Flat tire .............................................. 229
Preparing the vehicle.................... 229
Sealing tires with TIREFIT kit 1 ..... 229
Sealing tires with TIREFIT kit 2 ..... 234
Mounting the spare wheel ............ 238
Battery ............................................... 245
Disconnecting the battery ............ 246
Removing the battery ................... 246
Charging and reinstalling battery . 246
Reconnecting the battery ............. 246
Jump starting ..................................... 247
Towing the vehicle ............................. 249
Towing eye ................................... 251
Installing towing eye bolt.............. 252
Fuses ................................................. 253
Main fuse box ............................... 253
Auxiliary fuse box ......................... 254
Technical data.................................. 255
Spare parts service ............................ 256
Warranty coverage ............................. 257
Loss of Service and Warranty
Information Booklet...................... 257
Identification labels............................ 258Layout of poly-V-belt drive ................. 259
SLK 230 Kompressor ................... 259
SLK 320 ....................................... 259
SLK 32 AMG................................. 259
Engine................................................ 260
Rims and Tires ................................... 261
Same size tires ............................. 262
Mixed size tires ............................ 263
Spare wheel with collapsible tire.. 265
Electrical system ............................... 266
Main Dimensions ............................... 267
Weights.............................................. 268
Fuels, coolants, lubricants etc. .......... 269
Capacities .................................... 269
Engine oils.................................... 271
Engine oil additives ...................... 271
Air conditioning refrigerant .......... 271
Brake fluid .................................... 271
Premium unleaded gasoline ......... 272
Fuel requirements ........................ 272
Gasoline additives ........................ 272
Coolants....................................... 273
Windshield and headlamp*
washer system ............................. 275
Consumer information ....................... 276
Uniform tire quality grading ......... 276
Technical terms............................... 279Index................................................. 285

181 Operation
Tires and wheels
Life of tire
The service life of a tire is dependent upon
varying factors including but not limited to:

Driving style


Tire pressure


Distance driven
Direction of rotation
Unidirectional tires offer added advantag-
es, such as better aquaplaning perfor-
mance. To benefit, however, you must
ensure that the tires rotate in the direction
specified.
An arrow on the sidewall indicates the in-
tended direction of tire rotation.Checking tire inflation pressureCorrect the tire pressure only when tires
are cold.
Regularly check your tire pressure at inter-
vals of no more than 14 days.
If the tires are warm, you should only cor-
rect the tire pressure if it is too low for cur-
rent operating conditions.
A table on the fuel filler flap lists the spec-
ified tire inflation pressures for warm and
cold tires as well as for various operating
conditions.
Warning!
G
Tires and spare tire should be replaced after
six years, regardless of the remaining tread.!Keep unmounted tires in a cool, dry
place with as little exposure to light as
possible. Protect tires from contact
with oil, grease and gasoline.
Warning!
G
If the tire pressure repeatedly drops:

Check the tires for punctures from for-
eign objects.


Check to see whether air is leaking from
the valves or from around the rim.
iThe pressures listed for light loads are
minimum values offering high driving
comfort.
Increased inflation pressures listed for
heavier loads may also be used for light
loads. These higher pressures produce
favorable handling characteristics. The
ride of the vehicle, however, will be
somewhat harder. Never exceed the
max. values or inflate tires below the
min. values listed in the fuel filler flap.

182 OperationTires and wheelsTire pressure changes by approximately
1.5 psi (0.1 bar) per 18°F (10°C) of air
temperature change. Keep this in mind
when checking tire pressure where the
temperature is different from the outside
temperature.
The tire temperature and with it the tire
pressure is increased also while driving,
depending on the driving speed and the
tire load.Check the spare tire periodically for condi-
tion and inflation. Spare tires will age and
b e c o m e w o r n o v e r t i m e e v e n i f n e v e r u s e d ,
and thus should be inspected and replaced
when necessary.
Rotating wheels
The wheels can be rotated every 3000 to
6000 miles (5 000 to 10000 km), or soon-
er if necessary, according to the degree of
tire wear. The same direction of tire rota-
tion must be retained.Rotate the wheels before the characteris-
tic tire wear pattern becomes visible
(shoulder wear on front wheels and tread
center wear on rear wheels).
Thoroughly clean the inner side of the
wheels after each rotation. Check and en-
sure proper tire inflation pressure.
Warning!
G
Follow recommended inflation pressure.
Do not overinflate tires. Overinflated tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s
door opening). Overloading the tires can
overheat them, possibly causing a blowout.Warning!
G
Rotate front and rear wheels only if they are
of the same size.
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
80 ft.lb. (110 Nm).
Use only genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.

183 Operation
Winter driving
Winter driving
Before the onset of winter, have your
vehicle winterized at an authorized
Mercedes-Benz Center. This service
includes:

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 below freezing temperatures
(page 275).


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. We recommend M+S
rated radial-ply tires on all four wheels
for the winter season.
Winter tires
Always use winter tires at temperatures
below 39°F (4°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 ESP in winter
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 from your tire dealer or
from any authorized Mercedes-Benz
Center.Warning!
G
Winter tires with a tread depth under 0.16 in
(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.

207 Practical hints
Where will I find ...?
Vehicles with a spare wheel
(SLK 230 Kompressor, SLK 320)
1Spare wheel with collapsible tire
2Vehicle tool kit
3Wheel wrench
4Jack
5Electric air pump, bolts for spare wheel
rimSparewheel, vehicle tool kit, wheel
wrench, jack and electric air pump are
located under the trunk floor cover.

Lift trunk floor cover.
You can take out vehicle tool kit2,
wheel wrench3 and jack4.
Electric air pump5 is secured with a belt.

Loosen the belt.

Remove electric air pump from pump
holder.
Spare wheel1 is secured with the pump
holder.

Turn pump holder counterclockwise.

Remove pump holder.

Remove spare wheel out of the wheel
well.Spare wheel bolts
Wheel bolts1 Wheel bolt for

wheel rim size 7Jx16 H2 and 8Jx16 H2


AMG wheel rim size 7
1⁄2Jx17 H2 and
8
1⁄2Jx17 H2


spare wheel rim size 4
1⁄2Bx16 H2
2 Wheel bolt for


spare wheel rim size 4
1⁄2Bx15 H2
(located with electric air pump)

208 Practical hintsWhere will I find ...?More information can be found in the
“Technical data” section (
page 265).Vehicles with TIREFIT kit (SLK 32 AMG)
1Electric air pump
2TIREFIT kit
3Vehicle tool kit, jack, wheel wrenchThe electric air pump and TIREFIT kit are
located in the storage box under the trunk
floor cover.
The vehicle tool kit, jack and wheel wrench
are located below the rug on the right side.

Lift trunk floor cover.

Open storage box cover.
You can take out vehicle tool kit3 and
accessories.

Pull down the flap on the storage box.

Remove electric air pump1 and
TIREFIT kit2.
!Wheel bolts2 must be used when
mounting spare wheel rim size
41⁄2Bx15 H2.
The use of any wheel bolts other than
wheel bolts2 for spare wheel rim size
4
1⁄2Bx15 H2 can cause physical dam-
age to the vehicle.
Warning!
G
Be sure to use original length wheel bolts
when remounting the original wheel after it
has been repaired.

229 Practical hints
Flat tire
Flat tire
Your vehicle is equipped with a TIREFIT kit
(SLK 32 AMG only) (
page 208) or a
spare wheel with collapsible tire
(SLK 230 Kompressor and SLK 320 only)
(
page 207).
You can identify which TIREFIT kit
(SLK 32 AMG only) you have as follows:


The TIREFIT container of kit 1 is a
squeeze container.


The TIREFIT container of kit 2 is a rigid
container and includes a flange for filler
hose (outlet) and air hose (inlet).
Preparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.

Turn on hazard warning flashers.

Engage the steering wheel lock in the
straight ahead position and set the
parking brake.

Move the selector lever toP (manual
transmission to first or reverse gear.

Have any passenger exit the vehicle at
a safe distance from the roadway.
Sealing tires with TIREFIT kit 1
Small tire punctures, only those in the
tread, can be sealed with TIREFIT.
TIREFIT can be used in ambient tempera-
tures down to -4°F (-20°C).
The TIREFIT kit stored in the trunk
(page 208) contains the TIREFIT
container, a filler hose, a valve stem tool,
a valve core and a sticker.

Foreign objects (e.g. screws or nails)
should not be removed from the tire.

Attach the sticker where it will be easily
seen by the driver on the instrument
cluster.
Warning!
G
Keep TIREFIT away from sparks, open flame
or heat source.
Do not smoke.
Warning!
G
TIREFIT is a limited repair device. TIREFIT
cannot be used for:

cuts or punctures larger than approx.
0.16 in (4 mm)


on a flat tire, or a damaged wheel


tire damage caused by driving with ex-
tremely low tire pressure
Do not drive the vehicle under such circum-
stances.
Contact your nearest Mercedes-Benz
Center for assistance or call Roadside Assis-
tance.

238 Practical hintsFlat tire
Visit an authorized Mercedes-Benz
Center as soon as possible to obtain a
new TIREFIT kit.

Bring used TIREFIT materials to an au-
thorized Mercedes-Benz Center for
proper disposal.

Replace your TIREFIT container every
four years. Replacement containers are
available at your authorized
Mercedes-Benz Center.
Mounting the spare wheel
More information on spare wheels with
collapsible tires can be found in the “Tech-
nical data” section (
page 265).Preparing the vehicle
Prepare the vehicle as described under
“Preparing the vehicle” on page
(
page 229).

Turn pump holder counterclockwise to
loosen (
page 207).

Take the spare wheel out of wheel well.
Lifting the vehicle

Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
(not included) or other sizable objects.
When changing wheel on a level surface:

Place one chock in front of and one be-
hind the wheel that is diagonally oppo-
site to the wheel being changed.
When changing wheel on a hill:

Place chocks on the downhill side
blocking both wheels of the other axle.

Take the vehicle tool kit and the jack
out of the trunk.
Warning!
G
Do not exceed vehicle speed of 50 mph
(80 km/h). A TIREFIT repair is not designed
to operate at higher speeds.
The sticker must be attached on the instru-
ment cluster where it will be easily seen by
the driver.
Vehicle handling characteristics may
change. Adapt your driving accordingly.
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a spare wheel
mounted. Adapt your driving style accord-
ingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted, en-
sure proper tire pressure and do not exceed
vehicle speed of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.