Mercedes-Benz R-Class Owner's Manual page 321

Practical advice
Flat tyre
Raising the vehicle
G Risk of injury
The jack is designed only to raise the vehi-
cle for a short time while a wheel is being
changed.
If you intend to work under the vehicle, it
must be placed on stands.
Make sure that the jack is placed on a firm,
non-slip, level surface. Do not use wooden
blocks or similar items as jacking supports.
Otherwise, the jack will not be able to ach-
ieve its load-bearing capacity due to the
restricted height.
Do not start the engine at any time while
the wheel is being changed.
Do not lie under the vehicle when it is being
supported by the jack. If you do not raise
the vehicle as described, it could slip off the
jack (e.g. if the engine is started or a door
or the tailgate is opened or closed) and you
could be seriously injured.
G Risk of accident
If you fail to position the jack correctly, the
vehicle may:
318
slip off the jack
R
injure you or others
R
be damaged
R
It is thus important to ensure that the jack
is positioned correctly in the respective
jacking points. Before positioning the jack,
remove any dirt that may have collected in
the jacking points.
Wheel wrench
1
Using wheel wrench 1, loosen the bolts on
X
the wheel you wish to change by about one
full turn. Do not unscrew the bolts com-
pletely.
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).
Jacking point
1
Jack
2
Ratchet ring spanner
3
Position jack 2 at jacking point 1.
X