Mercedes-Benz 2009 M-Class Operator's Manual page 377

Attaching the spare wheel
G Warning!
Vehicles with spare wheel with collapsible
tire only: Inflate collapsible tire only after
the wheel is properly attached.
Inflate the collapsible tire using the electric
air pump before lowering the vehicle.
G Warning!
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Center or
call Roadside Assistance.
Incorrect wheel bolts or improperly
tightened wheel bolts can cause the wheel
to come off. This could cause an accident.
Be sure to use the correct wheel bolts.
G Warning!
Only use genuine Mercedes-Benz wheel
bolts. Other wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.
Wheel bolt for 18", 19", 20" and 21" light
1
alloy wheels, and spare wheel with
collapsible tire
Wheel bolt for Minispare wheel (located in
2
vehicle tool kit)
! Wheel bolts must be used when
2
mounting the Minispare wheel. The use of
any wheel bolts other than wheel bolts
for the Minispare wheel will damage the
vehicle's brakes.
G Warning!
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
X
Clean contact surfaces of wheel and wheel
hub.
! To avoid paint damage, place wheel flat
against hub and hold it there while
installing first wheel bolt.
X
Guide the spare wheel onto the alignment
bolt and push it on.
X
Insert the wheel bolts and tighten them
slightly.
2
X
Unscrew the alignment bolt.
X
Install last wheel bolt and tighten it slightly.
X
Vehicles with spare wheel with
collapsible tire: Continue the procedure
by following the instructions under
"Inflating the collapsible
Practical hints
Flat tire
Z
375