2012 MERCEDES-BENZ SL ROADSTER wheel bolt torque

Switching off .................................. 447
Switching on .................................. 447
Weather map (COMAND
Online) ........................................ 448, 449
Legend ........................................... 449
Showing/hiding the menu ............. 448
Switching to the weather informa- tion display .................................... 449
Website .............................................. 458
Adding to favourites ....................... 458
Wheel and tyre combinations
see Tyres
Wheel bolt tightening torque ........... 609
Wheel chock ...................................... 606
Wheels
Changing a wheel .......................... 605
Changing/replacing ....................... 605
Checking ........................................ 597
Cleaning ......................................... 570
Cleaning (warning) ......................... 606
Emergency spare wheel ................. 614
Fitting a new wheel ........................ 609
Fitting a wheel ............................... 606
Important safety notes .................. 596
Overview ........................................ 596
Removing a wheel .......................... 608
Storing ........................................... 606
Tightening torque ........................... 609
Wheel size/tyre size ...................... 610
Windows
Cleaning ......................................... 570
see Side windows
Windscreen
Demisting ...................................... 146
Windscreen washer fluid
see Windscreen washer system
Windscreen washer system
Notes ............................................. 628
Topping up ..................................... 566
Windscreen wipers
Display message ............................ 272
Problem (malfunction) ................... 138
Replacing the wiper blades ............ 136
Switching on/of f........................... 135
Winter operation
Important safety notes .................. 598
Overview ........................................ 598
Slippery road surfaces ................... 181 Snow chains .................................. 599
Winter tyres
Limiting the speed (on-board com-
puter) ............................................. 242
M+S tyres ...................................... 598
Wiper blades
Cleaning ......................................... 571
Important safety notes .................. 136
Replacing ....................................... 136
Wooden trim (cleaning instruc-
tions) .................................................. 573
Workshop
see Qualified specialist workshop Z
ZONE function Switching on/of f........................... 146 30
Index

hubs could otherwise be damaged when
the bolts are tightened. X
Unscrew the uppermost wheel bolt com-
pletely.
X Screw centring pin :into the thread
instead of the wheel bolt.
X Unscrew the remaining wheel bolts fully.
X Remove the wheel.
Fitting 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 605).
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
approved for Mercedes-Benz vehicles and the
respective wheel.
! AMG vehicles:
during removal and repo-
sitioning 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 centring pin. X
Clean the wheel and wheel hub contact
surfaces.
X Slide the wheel to be mounted onto the
centring pin and push it on.
X Tighten the wheel bolts until they are fin-
ger-tight.
X Unscrew the centring pin.
X Tighten the last wheel bolt until it is finger-
tight.
X Vehicles with a collapsible emergency
spare wheel: inflate the collapsible emer-
gency spare wheel (Y page 615). Only
then lower the vehicle.
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. Changing a wheel
609Wheels and tyres Z

X
Turn the crank of the jack anti-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 cross-
wise pattern in the sequence indicated ( :
to A). The specified tightening torque is
130 Nm.
X Turn the jack back to its initial position.
X Stow the jack and the rest of the vehicle
tools in the boot again.
X AMG vehicles and vehicles with AMG
equipment: insert the cover into the outer
sill.
X Check the air pressure of the newly fitted
wheel and adjust accordingly.
Observe the recommended tyre pressure
(Y page 600).
i If you are driving with the collapsible
emergency spare wheel fitted, the tyre
pressure loss warning system or the tyre
pressure monitor cannot function reliably.
Do not restart the tyre pressure loss warn- ing system/tyre pressure monitor until the
defective wheel has been replaced with a
new wheel.
Vehicles with a tyre pressure control
system: all fitted wheels must be equipped
with functioning sensors. Wheel and tyre combinations
General notes
! For safety reasons, Mercedes-Benz rec-
ommends that you only use tyres and
wheels which have been approved by
Mercedes-Benz specifically for your vehi-
cle.
These are specially adapted to the control
systems, such as ABS or ESP ®
and are
marked as follows:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(tyres featuring run-flat characteristics)
R MO1 = Mercedes-Benz Original (only cer-
tain AMG tyres)
Mercedes-Benz Original Extended tyres
may only be used on wheels that have been
specifically approved by Mercedes-Benz.
Only use tyres, wheels or accessories tes-
ted and approved by Mercedes-Benz. Cer-
tain characteristics, e.g. handling, vehicle
noise emissions or fuel consumption, may
otherwise be adversely affected. In addi-
tion, when driving with a load, tyre dimen-
sion variations could cause the tyres to
come into contact with the bodywork and
axle components. This could result in dam- age to the tyres or the vehicle.
Mercedes-Benz accepts no liability for
damage resulting from the use of tyres,
wheels or accessories other than those tes- ted and approved.
Further information about wheels, tyres
and approved combinations can be
obtained from any qualified specialist
workshop.
! Retreaded tyres are neither tested nor
recommended by Mercedes-Benz, since
previous damage cannot always be detec-
ted on retreaded tyres. As a result,
Mercedes-Benz cannot guarantee vehicle
safety if retreaded tyres are fitted. Do not fit
used tyres if you have no information about their previous usage. 610
Wheel and tyre combinationsWheels and tyres