Mercedes-Benz GLA 180 Owner's Manual page 349

Changing a wheel
346
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.
G
WARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
It is imperative to observe the instructions and
safety notes on "Changing a wheel"
( page 342).
Y
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety rea-
sons, Mercedes-Benz recommends that you
only use wheel bolts which have been approved
for Mercedes-Benz vehicles and the respective
wheel.
Wheel bolts for the collapsible emergency
:
spare wheel (Mercedes-AMG vehicles)
Wheel bolts for all wheels supplied by the
;
factory
Mercedes-AMG vehicles: always use wheel
bolts : to fit the emergency spare wheel.
The wheel bolts for emergency spare wheel :
can be found in the emergency spare wheel bag
in the luggage compartment.
Clean the wheel and wheel hub contact sur-
X
faces.
Place the new wheel on the wheel hub and
X
push it on.
Tighten the wheel bolts until they are finger-
X
tight.
Lowering the vehicle
G
WARNING
The wheels could work loose if the wheel nuts
and bolts are not tightened to the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed.
Place the ratchet ring spanner onto the hex-
X
agon nut of the jack so that the letters AB are
visible.
Turn the ratchet ring spanner until the vehicle
X
is once again standing firmly on the ground.
Place the jack to one side.
X