Mercedes-Benz GLS Operator's Manual page 378

Changing a wheel
376
Place chocks or other suitable items under
X
the front and rear of the wheel that is diago-
nally opposite the wheel you wish to change.
Raising the vehicle
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WARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directly under
the jacking point of the vehicle.
!
Mercedes-AMG vehicles with
"Minispare" emergency spare wheel: only
use the "Minispare" emergency spare wheel
on the rear axle. If you mount the
"Minispare" emergency spare wheel on the
front axle, this could result in damage to the
brake system.
If a tire on the front axle is defective, an intact
wheel from the rear axle must first be
replaced with the "Minispare" emergency
spare wheel. The damaged wheel on the front
axle can then be replaced by the undamaged
wheel from the rear axle.
Make sure to note the placard on the
"Minispare" emergency spare wheel.
!
Only position the jack at the appropriate
jacking point of the vehicle. Otherwise, you
could damage the vehicle.
Observe the following when raising the vehi-
cle:
To raise the vehicle, only use the vehicle-spe-
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cific jack that has been tested and approved
by Mercedes-Benz. If used incorrectly, the
jack could tip over with the vehicle raised.
The jack is designed only to raise and hold the
R
vehicle for a short time while a wheel is being
changed. It must not be used for performing
maintenance work under the vehicle.
Avoid changing the wheel on uphill and down-
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hill slopes.
Before raising the vehicle, secure it from roll-
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ing away by applying the parking brake and
inserting wheel chocks. Do not disengage the
parking brake while the vehicle is raised.
The jack must be placed on a firm, flat and
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non-slip surface. On a loose surface, a large,
flat, load-bearing underlay must be used. On a
slippery surface, a non-slip underlay must be
used, e.g. rubber mats.
Do not use wooden blocks or similar objects
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as a jack underlay. Otherwise, the jack will not
be able to achieve its load-bearing capacity
due to the restricted height.
Make sure that the distance between the
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underside of the tires and the ground does not
exceed 1.2 in (3 cm).
Do not place your hands or feet under the
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raised vehicle.
Do not lie under the vehicle.
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Do not start the engine when the vehicle is
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raised.
Never open or close a door or the tailgate
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when the vehicle is raised.
Make sure that no persons are present in the
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vehicle when the vehicle is raised.
Using lug wrench :, loosen the bolts on the
X
wheel you wish to change by about one full
turn. Do not unscrew the bolts completely.