Advice
●
The temporary spare wheel is fitted
●
One wheel on the axle has been changed
Basic system settings
Should the tyre pressure change or if one or
more wheels are changed or the position of
the wheel on the vehicle is changed, e.g.
changing round the front and rear wheels, or
where a warning lamp lights up when driv-
ing, the system must be adjusted as follows:
●
Inflate all tyres to the prescribed pressures
››› page 144
.
●
Sw
it
ch the ignition on.
●
Hold the
››› Fig. 120 button down for
at least 2 seconds. The warning lamp will
light up when the button is pressed . The
system memory is also deleted and a new
calibration process will begin, which is indi-
cated by an audible warning and the warning
lamp switching off.
●
If the warning lamp remains lit and does
not switch off, not even once the basic set-
ting process is complete, this indicates a
fault in the system. Contact an Official Serv-
ice.
The warning lamp lights up
If the pressure on at least one tyre is signifi-
cantly lower than the pressure set by the driv-
er, the warning lamp ››› will light up.
The warning lamp flashes
If the warning lamp flashes, there is a fault in
the system. Contact a specialised service to
have it fixed.
WARNING
●
If the warning lamp lights up, slow down
immediately and avoid any severe braking or
steering manoeuvres. Stop and check the
tyres and their pressure as soon as possible.
●
Under certain conditions (e.g. sporty driv-
ing style, driving on loose surfaces or in win-
ter) the warning lamp may take a while to
light up or m
ay remain switched off.
●
Despite the tyre pressure monitoring sys-
tem, the driver remains responsible for main-
taining the correct tyre pressure. You must
therefore check the tyre pressure often.
Note
●
The tyre pressure monitoring system is not
a replacement for regularly checking the tyre
pressure, as it is unable to recognise an even
drop in pressure.
●
The tyre pressure monitoring system is un-
able to warn of a sudden drop in tyre pres-
sure, e.g. a puncture. In this case, try to stop
the vehicle carefully with no severe braking
or steering manoeuvres.
●
To ensure the tyre pressure monitoring sys-
tem works correctly, the basic setting must
be performed every 10 000 km (6000 miles)
or once a year.
Winter service
Winter tyres
Winter tyres will significantly improve han-
dling of the vehicle in winter road conditions.
The design of summer tyres (width, rubber
compound, tread pattern) gives less grip at
temperatures below +7 °C (45 °F), on ice and
snow. This applies particularly to vehicles
equipped with wide section tyres or high
speed ty
res (code letters H or V on the side-
wall).
In order to preserve the performance of the
vehicle as much as possible, winter tyres
must be fitted on all four wheels, the mini-
mum depth of the tread must be 4 mm and
the maximum age must be 4 years.
You can use winter tyres of a lower speed rat-
ing if the maximum speed limit of these tyres
will not be exceeded, even if the maximum
speed limit for the vehicle is higher.
For the sake of the environment
Summer tyres should be fitted again in time,
as they give better handling on roads free of
snow and ice and at temperatures over +7 °C
(45 °F). Summer tyres have a shorter braking
distance, produce less rolling noise and do
not wear as quickly. They also reduce fuel
consumption.
148
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