— If one wheel per axle has been changed.
T
he Tyre Pressure Loss Indicator does
not work if there is a fault in the ESC
or ABS → page 217.
Reference pressure
The reference pressure for the Tyre Pres-
sure Monitoring System is the recommen-
ded tyre pressure of cold tyres for the fac-
tory-fitted tyres. The reference pressure
corresponds to the information on the tyre
pressure sticker → page 350.
If the tyre pressure of all four tyres has
been adjusted correctly, the Tyre Pressure
Loss Indicator must be re-synchronised
→ page 359. The reference pressure is then
adapted to the current tyre pressure.
The Tyre Pressure Monitoring System
may react with a delay or not display any-
thing a
t all in the event of a sporty driving
style, when driving on snow-covered or icy
roads or unpaved roads or when driving
with snow chains.
The recommended tyre pressure for the
factory-fitted tyres is indicated on the tyre
pressure sticker on the driver’s door pillar
→ page 350.
The tyre pressure of all tyres, including the
spare wheel or temporary spare wheel,
must checked once every month with cold
tyres and must correspond to the specifica-
tions of the vehicle manufacturer on the
tyre pressure sticker. If the tyre size of the
fitted tyres diers from the specified value
on the type plate or tyre pressure sticker,
the correct tyre pressure must be deter-
mined.
As an additional safety feature, the vehicle
is equipped with a Tyre Pressure Monitoring
System (TPMS) in which an indicator lamp
for low tyre pressure lights up if the tyre
pressure of one or more tyres is significant-
ly too low. If the indicator lamp for low tyre
pressure lights up, the vehicle should there-
fore be stopped as quickly as possible. The
tyres should then be checked and inflated
to the correct pressure. Driving with a tyre
pressure that is significantly too low will
cause the tyre to overheat and can lead to
tyre damage. If the tyre pressure is insu-
cient, this will also reduce the fuel economy
and service life of the tyre tread and can
impair the handling and braking ability of
the vehicle.
T
he Tyre Pressure Monitoring System does
not replace regular maintenance and in-
spection of the tyres. The driver is responsi-
ble for ensuring that the correct tyre pres-
sure is maintained at all times, even if the
Tyre Pressure Monitoring System does not
yet display a warning about low tyre pres-
sure.
The Tyre Pressure Monitoring System also
has a malfunction indicator that provides
a corresponding warning if the system is
not functioning correctly. The fault indica-
tor is coupled to the indicator lamp for low
tyre pressure. If the system detects a fault,
the indicator lamp flashes for around 1 mi-
nute when the vehicle is started and then
lights up continuously. This sequence is re-
peated each time the vehicle is started
again as long as the fault is present.
If the Tyre Pressure Monitoring System indi-
cates a fault, the tyre pressure cannot be
monitored correctly. A malfunction of the
Tyre Pressure Loss Indicator can have vari-
ous causes, e.g. due to replacement of
a wheel or tyre. When a wheel or tyre has
been replaced, check whether the
warn-
ing lamp is indic
ating a system malfunction
to ensure that the Tyre Pressure Monitoring
System is functioning properly → page 359,
→ page 364.
WARNING
The Tyre Pressure Monitoring System is
not a sub
stitute for the full attention of
the driver and operates only within the
limits of the system. The Tyre Pressure
Monitoring System cannot detect all driv-
ing situations and may not react or may
react with a delay or in an undesired way.
If you do not pay due attention, there is
a risk of accidents and serious injuries or
even death.
·
Always remain alert and do not rely
solely on the Tyre Pressure Monitoring
System. The driver is always responsi-
ble for ensuring the correct tyre pres-
sure.
·
Observe the system limits → page 358.
·
Check the tyre pressure regularly when
the tyres are cold and always observe
Tyre Pressure Loss Indicator
357
2KF012720AE
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