Mercedes-Benz S 320 CDI, Owner'S Manual, Page: 457 / 588

435
Practical advice
Display messages
Rectify tyre pressure(s) There is insufficient pressure in one or
more tyres or the tyre pressures on in-
dividual wheels differ too much.
왘
Check the tyre pressures and correct
them if necessary (
컄
page 401).
Run Flat Indicator Check tyre pressures
and then reactivate
There was a tyre pressure warning
message.
왘
Make sure that all tyres are adjusted to
the correct pressure.
왘
Reactivate the Run Flat Indicator*
(
컄
page 402).
inoperative The Run Flat Indicator* is unavailable
due to a malfunction.
왘
Visit a qualified specialist workshop.
Tyre press. monitor currently unavailable The tyre pressure monitor* is some-
times not operational because:
앫
the wheel electronics unit has
overheated
앫
the on-board voltage is too low
앫
no sensor signals can be received
due to radio interference
왘
The tyre pressure monitor* is reactivated
automatically as soon as the cause has
been rectified.
Tyre press. monitor inoperative The tyre pressure monitor* is faulty.
왘
Have the tyre pressure monitor* checked
at a qualified specialist workshop.
inoperative
No wheel sensors
The tyre pressure monitor* is deacti-
vated because wheels without sen-
sors are fitted to the vehicle.
왘
The tyre pressure monitor* is reactivated
automatically after a few minutes of driv-
ing as soon as wheels with sensors are fit-
ted again.
Display messages Possible cause/consequence Possible solution