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Practical tips
●
The t
yr
e struct
ur
e is damaged.
●
The v
ehicl
e is unbal
anced because of a
load.
●
The wheels on an axle are subject to a
heavier load (e.g. with a heavy load).
●
The vehicle is fitted with snow chains.
●
The temporary spare wheel is fitted.
●
The wheel on one axle is changed.
There may be a delay in the reaction of the
tyre monitoring indicator or it may not indi-
cate anything under certain circumstances
(e.g. sporty driving, snow-covered or un-
paved roads, or when driving with snow
chains).
Calibrating the tyre monitoring indicator
After changing the tyre pressure or replacing
one or more wheels, the tyre monitoring indi-
cator must be recalibrated. Do the same, for
example, when the front and rear wheels are
swapped.
●
Switch the ignition on.
●
Store the new inflation pressure in the Easy
Connect system with the button > SET-
TINGS > Tyres
›››
page 82 .
When driving, the system self-calibrates the
tyre pressure provided by the driver and the
wheels fitted. After a long journey with varied
speeds the programmed values are collected
and monitored.
With the wheels under very heavy loads, the
tyre pressure must be increased to the total
recommended tyre pressure before calibra-
tion
›››
Fig. 319.
WARNING
When the tyres are inflated at different
pressures or at a pressure that is too lo
w
then a tyre may be damaged resulting in a
loss of control of the vehicle and a serious
or fatal accident.
●
If the lamp lights up, reduce speed im-
mediately and avoid any sudden turning or
braking manoeuvre. Stop when possible,
and check the tyre pressure and status.
●
The tyre monitoring system can only op-
erate correctly if all of the tyres are infla-
ted to the correct pressure when cold.
●
If a tyre has not been punctured and it
does not have to be changed immediately,
drive to the nearest specialised workshop
at a moderate speed and have the tyre
checked and inflated to the correct pres-
sure.
Note
●
Driving for the first time with new tyres at
a high speed can cause them to slightly ex-
pand, which coul
d then produce an air
pressure warning.
●
If excessively low tyre pressure is detec-
ted with the ignition on, an audible warning
will sound. In the event that there is a fault
in the system, an audible warning will
sound.
●
Driving on dirt tracks for a long period of
time or driving in a sporty style can tempo-
rarily deactiv
ate the TPMS. The control
lamp shows a fault, but disappears when
road conditions or the driving style change.
●
Do not only rely on the tyre monitoring
system. Regularly check your tyres to en-
sure that the tyre pressure is correct and
that the tyres are not damaged due to
puncture, cuts, tears and impacts/dents.
Remove objects from the tyres only when
they have not pierced the tyres.
●
The tyre monitoring indicator does not
function when there is a fault in the ESC or
ABS
›››
page 302.
370
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