Mercedes-Benz R-Class 2012 Owners Manual - Manual (Page 309)

Mounting a new wheel
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. Make 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 bolts for 18", 19" and 20" wheels
2 Wheel bolts for the collapsible spare
wheel
! Always use wheel bolts ; to mount the
collapsible spare wheel. Using other wheel
bolts to mount the collapsible spare wheel
could damage the brake system.
G WARNING
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
X Clean the wheel and wheel hub contact
surfaces.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
X Slide the emergency spare wheel 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.
X Inflate the collapsible spare wheel
(
Y page 307).
Inflating the collapsible spare wheel
G
WARNING
Inflate the collapsible spare wheel only after
the wheel is properly attached.
Inflate the collapsible spare wheel using the
tire inflation compressor
before lowering the
vehicle.
Your vehicle is equipped with one of two tire
inflation compressors:
R
Version 1: tire inflation compressor with a
pressure gauge on the air hose
R Version 2: tire inflation compressor with
an integrated pressure gauge
The following description applies to both
versions. Differences in the way they are used
will be explained in detail.
Flat tire
307
Breakdown assistance
Z