Mercedes-Benz GLB Owner's Manual page 543

540 Wheels and tyres
To fit: make sure that the centre cover of the
#
hub cap is turned anti-clockwise.
Position the hub cap and turn the centre
#
cover clockwise until the hub cap engages
physically and audibly.
Raising the vehicle when changing a wheel
Requirements:
There are no persons in the vehicle.
R
The vehicle has been prepared for a wheel
R
change ( page 539).
/
The hub caps have been removed
R
( page 539).
/
Important notes on using the jack:
Use only a vehicle-specific jack that has
R
been approved by Mercedes-Benz to raise
the vehicle.
The jack is only designed for raising and
R
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
R
non-slip surface. If necessary, use a large,
flat, load-bearing, non-slip underlay.
The foot of the jack must be positioned verti‐
R
cally under the jack support point.
Rules of conduct when the vehicle is raised:
Never place your hands or feet under the
R
vehicle.
Never lie under the vehicle.
R
Do not start the engine and do not release
R
the electric parking brake.
Do not open or close any doors or the tail‐
R
gate.
Using the wheel wrench, loosen the wheel
#
bolts on the wheel you wish to change by
about one full turn. Do not unscrew the bolts
completely.