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On-board computer event window
156
Tyres
Display messages
h
Tyre pressure in
spare wheel too low
h
Spare wheel tyre
pressure sensor bat‐
tery low
h
Tyre pressure moni‐
tor in spare wheel
faulty
Semitrailers
Display messages
ï
Coupling level
reached
Possible causes/consequences and M Solutions
ÛCheck and correct tyre pressure
Additional text
In addition to the event window, the h indicator lamp lights up in
grey in the status area of the on-board computer. The tyre pressure of
the spare wheel is too low.
X
Check the tyre pressure and, if necessary, correct it.
Replace tyre pressure sensor
Additional text Û:
In addition to the event window, the h indicator lamp lights up grey
in the status area of the on-board computer. The battery of the tyre
pressure sensor in the spare wheel is discharged.
X
Have the tyre pressure sensor replaced at a qualified specialist
workshop.
Supplementary text Û:
failure
In addition to the event window, the h indicator lamp lights up grey
in the status area of the on-board computer. The tyre pressure monitor
on the spare tyre has malfunctioned. No signal is received by the tyre
pressure sensor, e.g. due to a source of radio interference.
X
Drive on.
As soon as the cause is rectified, the tyre pressure monitor in the
spare wheel is reactivated and the tyre pressure value is displayed
again.
X
If the tyre pressure monitor in the spare wheel is not automatically
activated after a long journey, have the tyre pressure monitor
checked at a qualified specialist workshop.
Possible causes/consequences and M Solutions
The £ indicator lamp lights up red in the status area of the on-
board computer as well as in the event window. The semitrailer has
been detected while reversing. The semitrailer coupling is unlocked.
X
Continue the coupling procedure by reversing slowly.
Spare wheel tyre pressure monitor
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