wheel bolts MERCEDES-BENZ SLK350 2006 R171 Owner's Manual

Contents
Practical hints................................. 361
What to do if … .................................. 362
Lamps in instrument cluster ........ 362
Lamp in center console................ 367
Vehicle status messages in the
multifunction display .................... 368
Where will I find...? ............................ 388
First aid kit ................................... 388
Vehicle tool kit, vehicle jack......... 388
Spare wheel with collapsible tire.. 391
Spare wheel bolts ........................ 392
Unlocking/locking in an emergency .. 394
Unlocking the vehicle ................... 394
Locking the vehicle ...................... 395
Manually unlocking the gear
selector lever
(automatic transmission*) ........... 396
Opening/closing in an emergency..... 397
Raising retractable hardtop
manually ...................................... 397
Replacing SmartKey batteries ........... 398
SmartKey ..................................... 399Replacing bulbs .................................. 400
Bulbs ............................................. 401
Replacing bulbs for front lamps .... 403
Replacing bulbs for rear lamps ..... 405
Replacing wiper blades....................... 406
Removing wiper blades ................. 406
Installing wiper blades .................. 407
Flat tire ............................................... 408
Preparing the vehicle .................... 408
Sealing tires with TIREFIT.............. 408
Mounting the spare wheel ............ 412
Battery................................................ 421
Disconnecting the battery............. 422
Removing the battery.................... 422
Charging and reinstalling battery .. 423
Reconnecting the battery.............. 423
Jump starting ...................................... 424
Towing the vehicle .............................. 426
Installing towing eye bolt .............. 428
Fuses .................................................. 430
Aids for replacing fuses ................ 430
Main fuse box in passenger
compartment ................................ 431
Fuse box in engine compartment.. 432
Technical data.................................. 433
Parts service ...................................... 434
Warranty coverage ............................. 435
Loss of Service and Warranty
Information Booklet ...................... 435
Identification labels ............................ 436
Layout of poly-V-belt drive.................. 437
SLK 280, SLK 350 ........................ 437
SLK 55 AMG ................................. 437
Engine ................................................ 438
Rims and tires .................................... 439
Same size tires ............................. 441
Mixed size tires ............................. 443
Spare wheel with collapsible tire .. 445
Electrical system ................................ 446
Main Dimensions................................ 447
Weights .............................................. 448

317 Operation
Tires and wheels
Tires and wheels
See an authorized Mercedes-Benz Center
for information on tested and recommend-
ed rims and tires for summer and winter
operation. They can also offer advice con-
cerning 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 therefore cannot
assure the operating safety of the vehicle
when such tires are used.
Important guidelines

Only use sets of tires and rims of the
same type and make.


Tires must be of the correct size for the
rim.


Break in new tires for approximately
60 miles (100 km) at moderate
speeds.


Regularly check the tires and rims for
damage. Dented or bent rims can
cause tire inflation pressure loss or
damage the tire beads.


If vehicle is heavily loaded, check tire
inflation pressure and correct as re-
quired.


Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths under
1/8in (3 mm).


When replacing individual tires, you
should mount new tires on the front
wheels first (on vehicles with
same-sized wheels all around).
Warning!
G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the
original part. See an 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 operating clearance of the wheels
and the tires may no longer be correct.
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 may lead to
an accident.

347 Operation
Tires and wheels
Rotating tires
Tire rotation can be performed on vehicles
with tires of the same dimension all
around. If your vehicle is equipped with
tires of the same dimension all around,
tires can be rotated, observing a
front-to-rear rotation pattern that will
maintain the intended rotation (spinning)
direction of the tire (
page 320).
In some cases, such as when your vehicle
is equipped with mixed-size tires (different
tire dimension front vs. rear), tire rotation
is not possible.If applicable to your vehicle’s tire configu-
ration, tires can be rotated according to
the tire manufacturer’s recommended in-
tervals in the tire manufacturer’s warranty
pamphlet located in your vehicle literature
portfolio. If none is available, tires should
be rotated every 3 000 to 6 000 miles
(5 000 to 10 000 km), or sooner if neces-
sary, according to the degree of tire wear.
The same rotation (spinning) direction
must be maintained (
page 320).
Rotate tires before the characteristic tire
wear pattern becomes visible (shoulder
wear on front tires and tread center wear
on rear tires).
Thoroughly clean the mounting face of
wheels and brake discs, i.e. the inner side
of the wheels/tires, during each rotation.
Check for and ensure proper tire inflation
pressure.For information on wheel change, see the
“Practical hints” section (
page 388) and
(
page 408).
Warning!
G
Rotate front and rear wheels only if the tires
are of the same dimension.
If your vehicle is equipped with mixed-size
tires (different tire dimensions front vs.
rear), tire rotation is not possible.
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
80 lb-ft (110 Nm).
Only use genuine Mercedes-Benz wheel
bolts specified for your vehicle’s rims.

388 Practical hintsWhere will I find...?First aid kit
The first aid kit is stored in a parcel net
behind the driver’s seat.Vehicle tool kit, vehicle jack
The vehicle tool kit is stored in a storage
compartment under the trunk floor.
The following is included:

Collapsible chock


Vehicle jack


Protective wrap


Alignment bolt


Towing eye bolt


Wheel wrench


Spare fuses


Fuse extractor


Valve extractor


Electric air pump


TIREFIT kit*Removing the vehicle tool kit
Vehicles with spare wheel
1Spare wheel
2Vehicle tool kit (under collapsible tire,
together with wheel bolts for spare
wheel with collapsible tire)
3Retaining screw

Open the trunk (
page 98).

Lift up trunk floor.

Loosen retaining screw3 by turning it
counter-clockwise.

Remove spare wheel1.

Remove vehicle tool kit2.1Collapsible wheel chock
2Vehicle jack
3Protective wrap
4Alignment bolt
5Towing eye bolt
6Wheel wrench
7Spare fuses, fuse extractor and valve
extractor
8Electric air pump

391 Practical hints
Where will I find...?
Spare wheel with collapsible tire
The spare wheel is stored in the storage
compartment underneath the trunk floor.
1Spare wheel, spare wheel bolts
(located under plastic cover on the
outside of spare wheel rim)
2Vehicle tool kit (under collapsible tire)
3Retaining screw
Loosen retaining screw3by turning it
counterclockwise.

Remove spare wheel1.

Take off the wheel bolts for spare
wheel1.Storing the spare wheel with
collapsible tire
If you wish to store the spare wheel after
use, carry out the following steps. Other-
wise the spare wheel will not fit the storage
compartment.

Unscrew the valve cap from the valve
of the collapsible tire.

Take the valve extractor from the vehi-
cle tool kit (
page 388).

Unscrew the valve insert from the valve
and allow the air to escape.

Screw the valve insert back into the
valve.

Screw the valve cap back on the valve.

Pull the protective wrap provided with
the vehicle tool kit over the spare
wheel.

Store the spare wheel and the valve ex-
tractor in the storage compartment un-
derneath the trunk floor.

Pierce the protective wrap with retain-
ing screw3.

Secure the spare wheel by turning re-
taining screw3 clockwise.
!Make sure the collapsible tire is dry
when storing it.iIt may take a few minutes for the col-
lapsible tire to deflate completely.

392 Practical hintsWhere will I find...?
In case of a flat tire, you may temporarily
use the spare wheel with collapsible tire
when observing the following restrictions:

Do not exceed a 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 with collapsible tire
mounted.
For more information, see “Rims and tires”
(
page 439).
Spare wheel bolts
1Wheel bolt for light alloy rims
2Wheel bolt for spare wheel with
collapsible tire (located under plastic
cover on the outside of spare wheel
rim)
Warning!
G
The dimensions of the spare wheel with col-
lapsible tire are different from those of the
road wheels. As a result, the vehicle han-
dling characteristics change when driving
with a spare wheel with collapsible tire
mounted.
The spare wheel with collapsible tire should
only be used temporarily, and should be re-
placed with a regular road wheel as quickly
as possible.

393 Practical hints
Where will I find...?
!
Wheel bolts2 must be used when
mounting the spare wheel with
collapsible tire. The use of any wheel
bolts other than wheel bolts2 for the
spare wheel with collapsible tire will
physically damage the vehicle’s
brakes. Warning!
G
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.

413 Practical hints
Flat tire
Preparing the vehicle
Prepare the vehicle as described
(page 408).

Take the collapsible tire, wheel wrench,
wheel bolts, jack, and electric air pump
out of the trunk (
page 388).Lifting the vehicle

Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
(not included) or other sizeable ob-
jects.
One wheel chock is included with the
vehicle tool kit (
page 388).
When changing wheel on a level surface:

Place the wheel chock in front of and
another sizeable object behind the
wheel that is diagonally opposite to the
wheel being changed.
Always try lifting the vehicle using the jack
on a level surface. However, should cir-
cumstances require you to do so on a hill,
place the wheel chock and the other size-
able object as follows:

Place the wheel chock and another
sizeable object on the downhill side
blocking both wheels of the axle not
being worked on.
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
with collapsible tire replaced with a regular
road wheel.
Never operate the vehicle with more than
one spare wheel with collapsible tire
mounted.
Do not switch off the ESP
® when a spare
wheel with collapsible tire is mounted.

414 Practical hintsFlat tire
1Wheel wrench
On wheel to be changed, loosen but do
not yet remove the wheel bolts in direc-
tion of arrow (approximately one full
turn with wheel wrench1).
The jack take-up brackets are located di-
rectly behind the front wheel housings and
in front of the rear wheel housings.2Jack
3Take-up bracket

Place jack2 on firm ground.

Position jack2 under take-up
bracket3 so that it is always vertical
(plumb-line) as seen from the side,
even if the vehicle is parked on an
incline.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into either side of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
o n l e v e l s u r f a c e . B e s u r e t h e j a c k a r m i s f u l l y
seated in the jack take-up bracket. Always
lower the vehicle onto sufficient capacity
jackstands before working under the
vehicle.
Warning!
G
Position the jack only on the jack take-up
brackets designed for this purpose.
If the jack is not properly positioned, the ve-
hicle may fall off of the jack.

415 Practical hints
Flat tire

Jack up the vehicle until the wheel is a
maximum of 1.2 in (3 cm) from the
ground. Never start engine while
vehicle is raised.Removing the wheel
4Alignment bolt

Unscrew the upper-most wheel bolt
and remove.

Replace this wheel bolt with alignment
bolt4 supplied in the vehicle tool kit.

Remove the remaining bolts.

Remove the wheel.Mounting the spare wheel
1Wheel bolt for light alloy rims
2Wheel bolt for spare wheel with
collapsible tire (located under plastic
cover on the outside of spare wheel
rim)
Warning!
G
The jack is intended only for lifting the
vehicle briefly for wheel changes. It is not
suited for performing maintenance work
under the vehicle.

Never start the engine when the vehicle
is raised.


Never lie down under the raised vehicle.
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolt
and wheel hub threads.