Wheels and tyres
MOBILITY
If the vehicle is fitted with tyres which are not lis‐
ted in the tyre inflation pressure information on
the vehicle, for example tyres with special appro‐
val, the system must be actively reset, see
page 284. The current tyre inflation pressures
are then accepted as the specified values.
▷ After changing the tyre setting.
▷ In the case of tyres with special approval:
▷ After every tyre or wheel change, a reset
must be carried out when the tyre inflation
pressures are correct.
▷ A reset must be carried out after the tyre
inflation pressure has been adjusted to a
new value.
When operating the system, please also comply
with the other information and notes in the Tyre
inflation pressure chapter, see page 284.
▷ Wheels with TPM wheel electronics.
Safety note
Tyre settings
WARNING
General
The display showing the specified tyre inflation
pressures does not replace the tyre inflation
pressure information on the vehicle. If incorrect
data has been entered into the tyre settings,
the specified tyre inflation pressures will also be
incorrect. As a result, reliable signalling of a loss
of tyre inflation pressure can no longer be guar‐
anteed. There is a risk of injury and material
damage. Make sure that the tyre sizes of the
fitted tyres are displayed correctly and that they
match the specifications on the tyres and in the
tyre inflation pressure information.
If the system does not detect the tyres automati‐
cally, the specifications for the fitted tyres can be
entered in the tyre settings.
The tyre sizes of the fitted tyres can be found in
the tyre inflation pressure information, see
page 284, or directly on the tyres.
The tyre data does not have to be re-entered if
the tyre inflation pressure is corrected.
For summer and winter tyres, the tyre data last
entered for each type is saved. This means that
the settings can be retrieved again after a tyre or
wheel change.
Operating requirements
Adjusting the settings
The following requirements must be met for the
system, otherwise reliable signalling of a loss of
tyre inflation pressure is not ensured:
Via iDrive:
1. "My Vehicle"
2. "Vehicle status"
3. "Tyre settings"
▷ After each tyre or wheel change, the system
has detected the fitted tyres, updated the rel‐
evant information and, after a short journey,
shown it on the Control Display.
4.
"Tyre Pressure Monitor"
5. Select tyres:
If the system does not detect the tyres auto‐
matically, enter the specifications for the fit‐
ted tyres in the tyre settings.
▷ "Summer tyres"
▷ "Winter tyres/all-season tyres"
6. "Current:"
▷ RDC only becomes active after a journey of
several minutes:
7. Select the type of tyre fitted on the rear axle:
▷ Tyre size, for example 245/45 R18 96 Y.
▷ After changing a tyre or wheel.
▷ After a reset, in the case of tyres with spe‐
cial approval.
▷ In the case of tyres with special approval:
"Other tyre".
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