wheel alignment MERCEDES-BENZ S-COUPE 2015 Owners Manual

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops ( Ypage 27).
Where will I find...?
Vehicle tool kit
General notes
The towing eye is located in the stowage well under the trunk floor.
iApart from certain country-specific varia-
tions, the vehicles are not equipped with a
tire-change tool kit. If the vehicle is equip-
ped with tire-changing tools, these are
located in the stowage well under the trunk floor. Some tools for changing a wheel are
specific to the vehicle. For more informa-
tion on which tire changing tools are
required and approved to perform a wheel
change on your vehicle, consult a qualifiedspecialist workshop.
Tools required for changing a wheel may
include, for example:
R Jack
R Wheel chock
R Lug wrench
R Ratchet wrench
R Alignment bolt
Vehicles with a TIREFIT kit
Example
:Tire sealant filler bottle
;Towing eye
=Tire inflation compressor
X Open the trunk lid.
X Lift the trunk floor upwards ( Ypage 197).
X Use the TIREFIT kit ( Ypage 222).
Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
R tires with run-flat characteristics
(MOExtended tires) ( Ypage 221)
Vehicle preparation is not necessary on
vehicles with MOExtended tires
R a TIREFIT kit ( Ypage 220)
Information on changing/mounting a wheel( Y page 261).
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 125).
X If possible, bring the front wheels into the
straight-ahead position.
X Switch off the engine.
220Flat tire
Roadside Assistance

XTake the ratchet wrench out of the vehicle
tool kit and place it on the hexagon nut of
the jack so that the letters AUFare visible.
X
Position jack Aat jacking point ?.
X
Make sure the foot of the jack is directly
beneath the jacking point.
X Turn ratchet wrench Buntil jack Asits
completely on jacking point ?and the
base of the jack lies evenly on the ground.
X Turn ratchet wrench Buntil the tire is
raised a maximum of 1.2 in (3 cm) from the ground.
Removing a wheel
!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.
When mounting/removing wheels, and for as
long as the wheels are removed, avoid apply- ing any external force on the brake disks. This could impair the level of comfort when brak-ing.
X Unscrew the uppermost wheel bolt com- pletely.
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
GWARNING
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 ofdamage to the threads, contact a qualified
specialist workshop immediately. Have the
damaged wheel bolts or hub threads
replaced/renewed. Do not continue driving.
GWARNING
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 notes in the "Changing a wheel" sec-
tion ( Ypage 261).
Only use wheel bolts that have been designed for the wheel and the vehicle. For safety rea-
sons, Mercedes-Benz recommends that you
only use wheel bolts which have been
Changing a wheel265
Wheels and tires
Z

approved for Mercedes-Benz vehicles and the
respective wheel.
!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 fin-
ger-tight.
X Unscrew the alignment bolt.
X Tighten the last wheel bolt until it is finger-
tight.
Lowering the vehicle
GWARNING
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 Place the ratchet wrench onto the hexagon
nut of the jack so that the letters ABare
visible.
X Turn the ratchet wrench 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 cross-
wise pattern in the sequence indicated ( :
to A ). The tightening torque must be
110 lb-f t(150 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 Check the tire pressure of the newly moun-
ted wheel and adjust it if necessary.
Observe the recommended tire pressure (Y page 243).
iVehicles with a tire pressure control sys-
tem: all mounted wheels must be equipped
with functioning tire pressure control sen-sors.
Wheel and tire combinations
General notes
!
For safety reasons, Mercedes-Benz rec-
ommends that you only use tires and
wheels which have been approved by
Mercedes-Benz specifically for your vehi-cle.
266Wheel and tire combinations
Wheels and tires