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Practical tips
current they are using. This limits the amount
of po
w
er consumed and helps t
o ensur
e r
eli-
able starting even after a long period. Some
convenience functions, such as remote vehi-
cle opening, may not be available under cer-
tain circumstances. These functions will be
restored when you switch on the ignition and
start the engine.
With the engine switched off
For example, if you listen to the sound system
with the engine switched off the battery will
run down.
If the energy consumption means there is a
risk that the engine will not start, a text will
appear in vehicles with a driver information
system*.
This driver indicator tells you that you must
start the engine so that the battery can re-
charge.
When the engine is running
Although the alternator generates electrical
power, the battery can still become dis-
charged while the vehicle is being driven. This
can occur when a lot of power is being con-
sumed but only a small amount supplied, es-
pecially if the battery is not fully charged ini-
tially.
To restore the necessary energy balance, the
system will then temporarily shut off the elec-
trical devices that are using a lot of power, or
reduce the current they are consuming. Heat-
ing systems in particular use a large amount
of electrical power. If you notice, for instance,
that the seat heating* or the rear window
heater is not working, they may have been
temporarily switched off or regulated to a
lower heat output. These systems will be
available again as soon as sufficient electri-
cal power is available.
You may also notice that the engine runs at a
slightly faster idling speed when necessary.
This is quite normal, and no cause for con-
cern. The increased idling speed allows the
alternator to meet the greater power require-
ment and charge the battery at the same
time.
Wheels
Wheel
s and t
yr
es
Gener
al not
es
–
When driving with new tyres, be especially
car
eful during the first 500 km (300 miles).
–
If you have to drive over a kerb or similar
obstacle, drive very slowly and as near as
possible at a right angle to the obstacle.
–
Check from time to time if the tyres are
damaged (punctures, cuts, cracks or
dents). Remo
ve any foreign objects em-
bedded in the treads.
–
Damaged wheels and tyres must be re-
placed immediately.
–
Keep grease, oil and fuel off the tyres.
–
Replace any missing valve caps as soon as
possible.
–
Mark the wheels before taking them off so
that they rotate in the same direction when
put back.
–
When removed, the wheels or tyres should
be stored in a cool, dry and preferably dark
place.
356
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