Possible driving distance with a deflated
tyre
The possible driving distance varies depending
on the load and stresses the vehicle is subjected
to, for example speed, the nature of the road sur‐
face, outside temperature. The driving distance
may be shorter but can also be increased by
adopting a more careful driving style.
If the vehicle is moderately loaded and subjected
to low stress, it is possible to travel up to 80 km,
50 miles.
Driving properties with damaged tyres
On a journey with damaged tyres, handling char‐
acteristics change and lead to the following sit‐
uations, for example:
▷ The vehicle losing traction more quickly.
▷ Longer stopping distances.
▷ Different self-steering characteristics.
Adapt your driving style. Avoid abrupt steering or
driving over obstacles, for example kerbs or pot‐
holes.
Final tyre failure
Vibration or loud noises during the journey may
be an indication that the tyre has finally failed.
Reduce your speed and stop the vehicle. Parts of
the tyre may detach, which might lead to an acci‐
dent.
Do not continue driving, but instead contact a
Service Partner of the manufacturer or another
qualified Service Partner or a specialist work‐
shop.
System limits
Temperature
The tyre inflation pressure depends on the tem‐
perature of the tyre.
The pressure increases as the temperature of
the tyre increases, for example while driving or
when exposed to sunlight.
The pressure decreases when the tyre tempera‐
ture drops.
Due to the system's inherent warning thresholds,
therefore, this behaviour may cause a warning to
be triggered when significant temperature drops
occur.
After a temperature-related warning, the speci‐
fied pressures are displayed again on the Control
Display after driving a short distance.
Sudden loss of tyre inflation
pressure
No warning can be given in the event of extreme,
sudden tyre failure caused by external factors.
Reset not carried out
Tyres with special approval: the system will not
function correctly if a reset has not been carried
out, for example, a flat tyre may be reported even
though the tyre pressure is correct.
Malfunction
Message
The yellow warning lamp flashes and
then illuminates continuously. A Check
Control message is shown. Tyre pres‐
sure losses may not be detected.
Action
▷ A wheel without wheel electronics is moun‐
ted: have the wheels checked if necessary.
▷ Fault due to systems or devices with the
same radio frequency: the system is auto‐
matically reactivated upon leaving the field of
interference.
▷ In the case of tyres with special approval: the
system was unable to complete the reset.
Perform a system reset again.
Malfunction: have the system checked.
Seite 385
Wheels and tyres
MOBILITY
385
Online Edition for Part no. 01405A1EA53 - X/20
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