Mercedes-Benz GL-Class 2012 Owners Manual - Manual (Page 325)

X Using lug wrench :, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts
completely.
The jacking points for the jack are located
behind the wheel housings of the front wheels
and in front of the wheel housings of the rear
wheels (arrows).
G WARNING
The jack is designed exclusively for jacking up
the vehicle at the jacking points. The jack
saddle must be placed centrally under the
jacking point.
If you do not position the jack correctly in the
jacking point, the vehicle can fall off the jack
and seriously or fatally injure you or others.
! The jack is designed exclusively for
jacking up the vehicle at the jacking points.
Otherwise, your vehicle could be damaged.
X Take ratchet wrench out of the vehicle tool
kit and place it on the hexagon nut of the
jack so that the letters
AUF are visible.
X Position jack = at jacking point ;.
X Make sure that the base of the jack is
positioned directly under the jacking point.
X Turn ratchet wrench ? until jack = sits
completely on jacking point ; and the
base of the jack lies evenly on the ground.
X Turn ratchet wrench ? until the tire is
raised a maximum of 1.2 inches (3 cm) off
the ground.
Removing a wheel
Flat tire
323
Breakdown assistance
Z