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134
Intelligent Technology
Caution
Never leave the steering wheel at full lock for more than 15 seconds when the
engine is running - risk of damaging the power steering!
Tyre pressure monitoring system
The tyre pressure monitoring system compares with the aid of the ABS sensors the
speed and also the rolling circumference of the individual wheels. If the rolling
circumference of a wheel is changed, the warning light
ment cluster page 29 and an audible signal sounds. The rolling circumference of
the tyre can change if:
the tyre inflation pressure is too low,
the structure of the tyre is damaged,
the vehicle is loaded on one side,
the wheels of an axle are loaded heavily (e.g. when towing a trailer or when
driving uphill or downhill),
snow chains are mounted,
the temporary spare wheel is mounted,
one wheel per axle was changed.
Basic setting of the system
After changing the tyre inflation pressures, after changing one or several wheels,
the position of a wheel on the vehicle (e.g. exchanging the wheels between the
axles) or when the warning light lights up while driving, a basic setting of the
system must be carried out as follows.
Inflate all tyres to the specified inflation pressure page 165.
Fig. 127 Button for setting the tyre infla-
tion pressure control value
lights up in the instru-
Switch on the ignition.
Press button
fig. 127
for more than 2 seconds. While pressing the
button, the warning light
lights up. At the same time the memory of the system
is erased and the new calibration is started, which is confirmed with an audible
signal and then the warning light
If the warning light
does not go out after the basic setting, there is a fault in
the system. Have the vehicle inspected by your nearest specialist garage.
Warning light
lights up
If the tyre inflation pressure of at least one wheel is insufficiently inflated in
comparison to the stored basic value, the warning light
Warning light
flashes
If the warning light flashes, there is a system fault. Have the vehicle inspected by
your nearest specialist garage.
WARNING
When the warning light
lights up, immediately reduce the speed and
avoid sudden steering and brake manoeuvres. Please stop the vehicle without
delay at the nearest possible stop and inspect the tyres and their inflation pres-
sures.
The driver is responsible for the correct tyre inflation pressures. For this
reason, the tyre inflation pressures must be checked regularly.
Under certain circumstances (e.g. sporty style of driving, wintry or unpaved
roads) the warning light
can be delayed or does not light up at all.
The tyre pressure monitoring system does not take away the responsibility
from the driver for the correct tyre inflation pressure.
Note
The tyre pressure monitoring system:
does not replace the regular tyre inflation pressure control, because the system
cannot detect an even pressure loss,
cannot warn in case of very rapid tyre inflation pressure loss, e.g. in case of
sudden tyre damage. In this case carefully bring the vehicle to a standstill without
sudden steering movements and without sharp braking.
In order to ensure a proper functioning of the tyre inflation pressure-control
system, it is necessary to carry out the basic setting again every 10 000 km or 1x a
year.
goes out.
lights up.
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