On a slight downhill gradient
If you need to change a wheel on a slight down‐
hill grade, place chocks and other suitable ob‐
jects, for instance rocks, under the wheels of
both the front and rear axles against the rolling
Lug bolt lock
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
The adapter of the lug bolt lock is in the onboard
vehicle tool kit or in a storage compartment close
to the onboard vehicle tool kit.
▷ Lug bolt, arrow 1.
▷ Adapter, arrow 2.
Attach the adapter to the lug bolt.
2. Unscrew the lug bolt.
3. Remove the adapter after unscrewing the lug
1. Attach the adapter to the lug bolt. If neces‐
sary, turn the adapter until it fits on the lug
2. Screw on the lug bolt. The tightening torque
is 140 Nm.
3. Remove the adapter and stow it after screw‐
ing 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
▷ As soon as permitted by the traffic flow, have
all vehicle occupants get out of the vehicle
and ensure that they remain outside the im‐
mediate area in a safe place, such as behind a
▷ Depending on the vehicle equipment, get
wheel change tools and, if necessary, the
emergency wheel from the vehicle.
▷ If necessary, set up a warning triangle or port‐
able hazard warning light at an appropriate
▷ Secure the vehicle additionally against rolling.
▷ Loosen the lug bolts a half turn.
Wheels and tires
Online Edition for Part no. 01405A10E93 - VI/20