wheel bolts MERCEDES-BENZ CLK350 2007 A209 Owner's Manual

Contents
At the gas station .............................. 312
Refueling ...................................... 312
Check regularly
and before a long trip ................... 314
Engine compartment ......................... 315
Hood ............................................ 315
Engine oil ..................................... 317
Transmission fluid level ................ 319
Coolant ........................................ 320
Battery ......................................... 321
Windshield washer system and
headlamp cleaning system* ......... 322
Tires and wheels ................................ 323
Important guidelines .................... 323
Tire care and maintenance........... 324
Direction of rotation ..................... 326
Loading the vehicle ...................... 326
Recommended
tire inflation pressure ................... 331
Checking tire inflation pressure ... 333
MOExtended system* .................. 336
Tire labeling.................................. 337
Load identification ....................... 341
DOT,
Tire Identification Number (TIN) ... 342
Maximum tire load ....................... 343Maximum tire inflation pressure ... 344
Uniform Tire Quality Grading
Standards (U.S. vehicles) .............. 344
Tire ply material ............................ 346
Tire and loading terminology......... 347
Rotating tires ................................ 350
Winter driving ..................................... 351
Winter tires ................................... 351
Block heater (Canada only) ........... 352
Snow chains.................................. 352
Maintenance....................................... 353
Maintenance
service indicator message ............ 353
Clearing the maintenance
service indicator message ............ 354
Maintenance
service term exceeded.................. 354
Calling up the maintenance
service indicator display ............... 355
Resetting the maintenance
service indicator ........................... 355
Vehicle care........................................ 356
Cleaning and care of vehicle ......... 356
Practical hints.................................. 365
What to do if …? ................................. 366
Lamps in instrument cluster ......... 366
Lamp in center console ................ 376
Vehicle status messages
in the multifunction display .......... 378
Where will I find...? ............................. 404
First aid kit.................................... 404
TIREFIT (CLK 63 AMG only)........... 404
Vehicle tool kit.............................. 404
Minispare wheel............................ 407
Spare wheel bolts ......................... 409
Unlocking/locking in an emergency .. 410
Unlocking the vehicle ................... 410
Locking the vehicle ....................... 411
Manually unlocking
the gear selector lever .................. 412
Opening/closing in an emergency ..... 413
Operating roll bars manually ......... 413
Soft top emergency operation ...... 415
Resetting activated head restraints.... 424
Resetting activated
head restraints ............................. 424

323 Operation
Tires and wheels
Tires and wheels
See an authorized Mercedes-Benz Center
for information on tested and
recommended rims and tires for summer
and winter operation. They can also offer
advice concerning tire service and
purchase.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 and
damage to the tire beads.

If vehicle is heavily loaded, check tire
inflation pressure and correct as
required.

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
components 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
result in the bolts loosening and possibly an
accident.
Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on re-
treads. The operating safety of the vehicle
cannot be assured when such tires are used.

350 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 a
front-to-rear rotation pattern that will
maintain the intended rotation (spinning)
direction of the tire (
page 326).
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 326).
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 disks, 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 404) and
(
page 436).
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.

404 Practical hints
Where will I find...?
First aid kit
The first aid kit is located in the trunk on
the right side secured by a hook and loop
fastener.
1First aid kit
2Hook and loop fastener
Loosen hook and loop fastener2.
Remove first aid kit1.
TIREFIT (CLK 63 AMG only)
The TIREFIT kit is located under the trunk
floor.
Lift the trunk floor and engage the han-
dle in the upper edge of trunk.
1Straps for soft top emergency opera-
tion, a pair of gloves
2Electric air pump
3Towing eye bolt
4Vehicle jack
5TIREFIT kit
6Fuse extractor
7Wheel wrench
8Collapsible wheel chock
Vehicle tool kit
The vehicle tool kit is stored in the com-
partment underneath the trunk floor.
The following is included:

Towing eye bolt

Wheel wrench

Alignment bolt

Vehicle jack

Collapsible wheel chock

Spare fuses

Fuse extractor

Straps for soft top emergency opera-
tion

A pair of gloves
The spare wheel bolts are fixed at the
Minispare wheel.
iCheck expiration dates and contents for
completeness at least once a year and replace
missing/expired items.

408 Practical hints
Where will I find...?
1Vehicle tool kit
Wheel wrench
Jack
2Arrow
3Minispare wheel, Wheel bolts for
Minispare wheel
4Vehicle tool kit storage well casing
Remove vehicle tool kit storage well
casing4.
Remove Minispare wheel3.Storing the Minispare wheel
Place Minispare wheel3 in wheel
well.
Place vehicle tool kit storage well
casing4 over the Minispare wheel.
Make sure arrow 2 on vehicle tool kit
storage well casing4 points in the
direction of travel.
Place storage well casing (page 405)
over the vehicle tool kit storage well
casing 4 and turn the retaining screw
(
page 405) clockwise as far it will go
to secure the Minispare wheel.
Disengage trunk floor handle in upper
edge of trunk and lower trunk floor cov-
er.
iArrow2 on vehicle tool kit storage well
casing4 must point in the direction of travel.
Otherwise you cannot place the storage well cas-
ing (
page 405) on top and secure the Minis-
pare wheel with the retaining screw
(
page 405).
!To prevent damage, always disengage trunk
floor handle from upper edge of trunk and lower
trunk floor before closing the trunk.
Warning!G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted.
The Minispare wheel should only be used
temporarily, and should be replaced with a
regular road wheel as quickly as possible.
Do not switch off the ESP
® when a Minis-
pare wheel is mounted.


409 Practical hints
Where will I find...?
In case of a flat tire, you may temporarily
use the Minispare wheel 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 Minispare wheel mounted.
For more information, see “Rims and tires”
(
page 466).
Spare wheel bolts
The spare wheel bolts are fixed at the
Minispare wheel.
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel
(located in trunk with spare wheel)!Wheel bolts2 must be used when mount-
ing the Minispare wheel. The use of any wheel
bolts other than wheel bolts2 for the Minispare
wheel 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.

441 Practical hints
Flat tire
Mounting the Minispare wheel Preparing the vehicle
Prepare the vehicle as described on
(
page 436).
Take the wheel wrench, alignment bolt,
collapsible wheel chock, and the jack
out of the trunk (
page 407).
Take the Minispare wheel and wheel
bolts out of the trunk (
page 407).Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizeable objects.
One wheel chock is included with the
vehicle tool kit (
page 404).
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.
Warning!G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted. Adapt your driving style
accordingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted,
ensure proper tire inflation pressure and do
not exceed a 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 Minispare wheel mounted.
Do not switch off the ESP
® when a Minis-
pare wheel is mounted.

442 Practical hints
Flat tire
1Wheel wrench
On wheel to be changed, loosen but do
not yet remove the wheel bolts (ap-
proximately one full turn with
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 jack 2 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 both sides 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,
especially on hills. Always try to use the jack
on a level surface. Make sure the jack arm is
fully seated in the jack take-up bracket.
Always lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.

443 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
1Alignment bolt
Unscrew upper-most wheel bolt and
remove.
Replace this wheel bolt with alignment
bolt1 supplied in the tool kit.
Remove the remaining bolts.
Remove the wheel.
Warning!G
The jack is intended only for lifting the vehi-
cle 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.

444 Practical hints
Flat tire
Mounting the spare wheel
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel
(located in trunk with Minispare wheel)Clean contact surfaces of wheel and
wheel hub.
1Alignment bolt
Guide the spare wheel onto the align-
ment bolt and push it on.
Insert wheel bolts and tighten them
slightly.!Wheel bolts2 must be used when mount-
ing the Minispare wheel. The use of any wheel
bolts other than wheel bolts2 for the Minispare
wheel will physically damage the vehicle’s
brakes.
!To avoid paint damage, place wheel flat
against hub and hold it there while installing first
wheel bolt.
Warning!G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure to use the correct wheel bolts.