Mercedes-Benz SL 2008 Owner's Manual page 213

Practical advice
Display messages
Display messages
Tyre pressure inoperative
monitor
Tyre pressure inoperative No
monitor wheel sensors
Tyre pressure Wheel sensor miss-
monitor ing
210
Possible cause/consequence
The tyre pressure monitor* is malfunc-
tioning.
The tyre pressure monitor* is deactivated
because the vehicle is fitted with wheels
that do not have suitable wheel sensors.
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. the 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.
Possible solution
Have the tyre pressure monitor* and wheels
X
checked at a qualified specialist workshop.
Have wheels with suitable wheel sensors fitted
X
at a qualified specialist workshop.
Once wheels with the correct wheel sensors
have been fitted, the tyre pressure monitor*
reactivates automatically after a few minutes
of driving.
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.
* optional