Mercedes-Benz GLA Series Operator's Manual page 291

Important notes on using the jack:
Use only a vehicle-specific jack that has
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been approved by Mercedes-Benz to raise
the vehicle.
The jack is only designed for raising and
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holding the vehicle for a short time while a
wheel is being changed and not for mainte‐
nance work under the vehicle.
The jack must be placed on a firm, flat and
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non-slip surface. If necessary, use a large,
flat, load-bearing, non-slip underlay.
The foot of the jack must be positioned verti‐
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cally under the jack support point.
Rules of conduct when the vehicle is raised:
Never place your hands or feet under the
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vehicle.
Never lie under the vehicle.
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Do not start the engine and do not release
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the electric parking brake.
Do not open or close any doors or the tail‐
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gate.
Using the lug wrench, loosen the wheel bolts
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on the wheel you wish to change by about
one full turn. Do not unscrew the bolts com‐
pletely.
Wheels and tires 289
Position of jack support points
Mercedes-AMG vehicles: observe the notes in
the Supplement. You could otherwise fail to rec‐
ognize dangers.
& WARNING Risk of injury from incorrect
positioning of the jack
If you do not position the jack correctly at
the appropriate jacking point of the vehicle,
the jack could tip with the vehicle raised.
Only position the jack at the appropri‐
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ate jacking point of the vehicle. The
base of the jack must be positioned