2013 MERCEDES-BENZ SL-CLASS ROADSTER wheel alignment

Tire-change tool kit
:
Bag containing the tire-changing tools
X Open the trunk lid.
X Open the trunk partition ( Y page 89).
X Lift the trunk floor upwards (Y page 478).
i Depending on the equipment, tools
required for
a wheel change, such as a jack
or a lug wrench, are not available in all
vehicles. Tools approved for your vehicle
are available at a qualified specialist
workshop.
Bag with the tire-changing tools : contains:
R jack
R lug wrench
R alignment bolt
R wheel chock
R gloves Flat tire
Preparing the vehicle
Information on changing a wheel/installing
(Y page 547).
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
Your vehicle may be equipped with:
R MOExtended tires (tires with run-flat
characteristics) (Y page 510)
R a TIREFIT kit (Y page 510) X
Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 154).
X If possible, bring the front wheels into the
straight-ahead position.
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 135).
X All occupants must get out of the vehicle.
Make sure

that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditions when doing so.
X Close the driver's door.
i Vehicles equipped

with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
A TIREFIT kit can be obtained from a
qualified specialist workshop. Flat tire
509
Roadside Assistance

=
Jacking points
? Jack
A Crank
X Position jack ? at jacking point =.Example
X
Make sure the foot of the jack is directly
beneath the jacking point.
X Turn crank A clockwise until jack ? sits
completely on jacking point = and the
base of the jack lies evenly on the ground.
X Turn crank A until the tire is raised a
maximum of 1.2 in (3 cm ) off the ground.
Removing a wheel !
AMG vehicles: during removal and
repositioning of the wheel, the wheel rim
can strike the ceramic-brake disc and
damage it.
Therefore, take precautions and
get a second person to assist you.
Alternatively, you can use a second
alignment bolt. !
Do not place wheel bolts in sand or on a
dirty surface. The bolt and wheel hub
threads could

otherwise be damaged when
you screw them in. X
Unscrew the uppermost wheel bolt
completely.
X Screw alignment bolt : into the thread
instead of the wheel bolt.
X Unscrew the remaining wheel bolts fully.
X Remove the wheel.
Mounting a new wheel G
WARNING
Oiled or greased wheel bolts or damaged
wheel bolts/hub

threads can cause the wheel
bolts to come loose. As a result, you could
lose a wheel while driving. There is a risk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contact a qualified
specialist workshop immediately. Have the
damaged wheel bolts or hub threads
replaced/renewed. Do not continue driving. G
WARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
Always pay attention to the instructions and
safety notices in "Changing a wheel"
(Y page 547). Changing a wheel
551
Wheels and tires Z

Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheel bolts which have been
approved
for
Mercedes-Benz vehicles and the
respective wheel.
! AMG vehicles: during removal and
repositioning of the wheel, the wheel rim
can strike the ceramic-brake disc and
damage it. Therefore, take precautions and
get a second person to assist you.
Alternatively, you can use a second
alignment bolt.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt. X
Clean the wheel and wheel hub contact
surfaces.
X Slide the wheel to be mounted onto the
alignment bolt and push it on.
X Tighten the wheel bolts until they are
finger-tight.
X Unscrew the alignment bolt.
X Tighten the last wheel bolt until it is finger-
tight.
Lowering the vehicle G
WARNING
The wheels could work loose if the wheel nuts
and bolts are not tightened to the specified
tightening torque. There is a risk of accident. Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed.
X
Turn the crank of the jack counter-
clockwise until the vehicle is once again
standing firmly on the ground.
X Place the jack to one side.
X Tighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated ( : to A). The specified
tightening torque is 96 lb-ft(130 Nm).
X Turn the jack back to its initial position.
X Stow the jack and the rest of the vehicle
tools in the trunk again.
X AMG vehicles and vehicles with AMG
equipment: insert

the cover into the outer
sill.
X Check the tire pressure of the newly
mounted wheel and adjust it if necessary.
Make sure to observe the recommended
tire pressure ( Y page 529).
i Vehicles with tire pressure monitor: all
wheels mounted must be equipped with
functioning sensors. Wheel and tire combinations
General notes
! For safety reasons, Mercedes-Benz
recommends that you only use tires and
wheels which have been approved by
Mercedes-Benz specifically for your
vehicle. 552
Wheel and tire combinationsWheels and tires