Mercedes-Benz R-Class Owner's Manual page 265

Practical advice
Display messages
Display messages
Tyre pressure Wheel sensor miss-
monitor ing
Tyre pressure currently unavail-
monitor able
262
Possible cause/consequence
The tyre pressure monitor* is not receiv-
ing signals from one or more wheels
because:
a wheel without a suitable wheel sensor
R
is fitted (e.g. an emergency spare
wheel*).
the battery on one of the wheel elec-
R
tronics unit is discharged.
a wheel electronics unit has malfunc-
R
tioned.
A line is displayed in the multi-function
display for the tyre concerned instead of
the tyre pressure value.
The tyre pressure monitor* is temporarily
deactivated. The voltage of the vehicle's
electrical system is too low or radio inter-
ference prevents the reception of sensor
signals.
Possible solution
Have the tyre pressure monitor* and wheels
X
checked at a qualified specialist workshop.
Once wheels with suitable wheel sensors have
been fitted again, the tyre pressures are dis-
played in the multi-function display after driv-
ing for a few minutes.
Drive on.
X
Once the causes have been eliminated, the tyre
pressure monitor* automatically reactivates
after a few minutes of driving.
* optional