X
On downhill gradients: place chocks or
similar items under both wheels of the
other axle. Securing a vehicle on slight downhill slopes (exam-
ple illustration)
Raising the vehicle G
Risk of injury
The jack is designed only to raise and hold the
vehicle for a short time while a wheel is being
changed.
You must use axle stands if you are carrying
out work on the vehicle.
Make sure that the jack is placed on a firm,
non-slip, level surface. Do not use wooden
blocks or similar objects as a jack underlay.
Otherwise, the jack will not be able to achieve
its load-bearing capacity due to the restricted
height.
Do not start the engine at any time while a
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 if 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: R
slip off the jack
R injure you or others
R be damaged
Thus, it is important to make sure that the jack
is positioned correctly in the respective jack-
ing points. Before positioning the jack,
remove any dirt that may have collected in the
jacking points. X
Using wheel wrench 1, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts com-
pletely. 228 Flat tyrePractical advice
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X
Position jack 2at jacking point 1. X
Make sure that the vehicle jack stands
upright and perfectly straight.
X Take ratchet ring spanner 3from the
vehicle tool kit and place it on the hexagon
nut of jack 2so that the letters AUFare
visible.
X Raise the vehicle with ratchet ring spanner
3 until the tyre is at most three centime-
tres off the ground.
X Unscrew the wheel bolts.
! Do not place wheel bolts in sand or on a
dirty surface. This could cause damage to
the bolt and wheel hub threads.
X Remove the wheel.
Fitting a new wheel G
Risk of accident
Replace damaged or corroded wheel bolts. Never oil or grease wheel bolts. This could
cause the bolts to loosen in the wheel hub.
G
Risk of accident
If a wheel hub thread is damaged, you must
not drive the vehicle any further. Consult a
qualified specialist workshop which has the
necessary specialist knowledge and tools to
carry out the work required. Mercedes-Benz
recommends that you use a Mercedes-Benz
Service Centre or Service 24h for this pur-
pose. In particular, work relevant to safety or
on safety-related systems must be carried out
at a qualified specialist workshop. G
Risk of accident
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. Other
bolts could work loose.
Do not tighten the wheel bolts completely
while the vehicle is still jacked up. The vehicle
could topple off the jack. 1
Wheel bolts for 17", 19" and 20" wheels
2 Wheel bolts for the "Minispare" emer-
gency spare wheel*
X Clean the wheel and wheel hub contact
surfaces. Flat tyre
229Practical advice
* optional
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