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On a level surface
Place chocks or other suitable objects, for ex‐
ample a rock, in front of and behind the wheel
that is diagonally opposite to the wheel that
you wish to change.
On a slight downhill gradient
If you need to change a wheel on a slight
downhill grade, place chocks and other suita‐
ble objects, for instance a rock, under the
wheels of both the front and rear axles against
the rolling direction.
Lug bolt lock
Concept
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
Overview
The adapter of the lug bolt lock is in the on‐
board vehicle tool kit or in a storage compart‐
ment close to the onboard vehicle tool kit.
▷ Lug bolt, arrow 1.
▷ Adapter, arrow 2.
Unscrewing
1.
Attach the adapter to the lug bolt.
2. Unscrew the lug bolt.
3. Remove the adapter after unscrewing the
lug bolt.
Screwing on
1.
Attach the adapter to the lug bolt. If neces‐
sary, turn the adapter until it fits on the lug
bolt.
2. Screw on the lug bolt. The tightening tor‐
que is 140 Nm.
3. Remove the adapter and stow it after
screwing on the lug bolt.
Preparing the vehicle
▷ Park the vehicle on solid and non-slip
ground at a safe distance from traffic.
▷ Switch on the hazard warning system.
▷ Set the parking brake.
▷ Engage a gear or move the selector lever
to position P.
▷ As soon as permitted by the traffic flow,
have all vehicle occupants get out of the
vehicle and ensure that they remain out‐
side the immediate area in a safe place,
such as behind a guardrail.
▷ Depending on the equipment version, get
tools and the emergency wheel from the
vehicle.
Seite 233
Wheels and tires Mobility
233
Online Edition for Part no. 01402981185 - VI/17
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