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3. Mount the new wheel.
4. Screw in at least two bolts crosswise.
5. Screw in the remaining lug bolts.
6. Fully tighten all lug bolts in a diagonal pat‐
tern.
7. Lower the vehicle.
8. Remove the jack.
Retightening the lug bolts
Retighten the lug bolts diagonally.
Checking that the lug bolts are tight
Always have the lug bolts checked with a
calibrated torque wrench as soon as possible to
ensure that they are tightened to the specified
torque. Otherwise, incorrectly tightened lug
bolts are a hidden safety risk.◀
The tightening torque equals
103.3 lb ft/140 Nm.
Replace the defective tire as soon as possible
and have the new wheel balanced.
Vehicle battery
Maintenance
The battery is maintenance-free, i.e., the elec‐
trolyte will last for the life of the battery in tem‐
perate climate conditions.
The service center will be happy to answer any
questions on the battery.
Battery replacement
Use approved vehicle batteries
Only use vehicle batteries that have been
approved for your vehicle by the manufacturer;
otherwise, the vehicle could be damaged and
systems or functions may not be fully availa‐
ble.◀
Have the vehicle battery registered by the serv‐
ice center after it is replaced to ensure that all
comfort functions are available without restric‐
tions and that any associated Check Control
messages are no longer displayed.
Charging the battery
Note
Do not connect the charger to the socket
Do not connect the battery charger to the
socket installed in the vehicle at the factory as
this could damage the battery.◀
Only charge the battery in the vehicle when the
engine is switched off. Connections, refer to
page 189.
General information
Ensure that the battery is sufficiently charged to
achieve the full battery life.
It may be necessary to charge the battery in
the following cases:
▷ When the vehicle is frequently used to
travel short distances.
▷ When the vehicle has not been driven for
more than one month.
Power failure
After a temporary power failure, some equip‐
ment will be restricted in its use and will need
to be reinitialized. In addition, certain individual
settings will be lost and must be updated:
▷ Time and date: the values must be up‐
dated, refer to page 71.
▷ Radio: the stations need to be stored again,
refer to page 130.
Disposing of old batteries
Have used batteries disposed of by the
service center after they are replaced or
take them to a recycling center.
Maintain the battery in an upright position for
transport and storage. Secure the battery so
that it does not tip over during transport.
Seite 187
Replacing components
MOBILITY
187
Online Edition for Part no. 01 40 2 961 029 - II/15
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