Mercedes-Benz GLS Operator's Manual page 379

The jacking points are located just behind the
front wheel housings and just in front of the rear
wheel housings (arrows).
Take the ratchet wrench out of the vehicle
X
tool kit and place it on the hexagon nut of the
jack so that the letters AUF are visible.
Position jack = at jacking point ;.
X
The alignment bolt on the jack must be inser-
ted into the intended opening on the jacking
point.
Make sure the foot of the jack is directly
X
beneath the jacking point.
Changing a wheel
Turn ratchet wrench ? until jack = sits
X
completely on jacking point ; and the base
of the jack lies evenly on the ground.
Turn ratchet wrench ? until the tire is raised
X
a maximum of 1.2 in (3 cm) from the ground.
Removing a wheel
!
Do not place wheel bolts in sand or on a dirty
surface. The bolt and wheel hub threads could
otherwise be damaged when you screw them
in.
When mounting/removing wheels, and for as
long as the wheels are removed, avoid applying
any external force on the brake disks. This could
impair the level of comfort when braking.
Unscrew the uppermost wheel bolt com-
X
pletely.
Screw alignment bolt : into the thread
X
instead of the wheel bolt.
Unscrew the remaining wheel bolts fully.
X
Remove the wheel.
X
Mounting 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.
377
Z