BMW Z4 Roadster Owner's Handbook Manual page 280

MOBILITY
Status display
Current status
The status of the system, for example whether
the system is active, can be shown on the Con‐
trol Display.
Via iDrive:
1. "CAR"
2. "Vehicle status"
3. "Tyre Pressure Monitor"
The current status is displayed.
Current tyre inflation pressure
The current tyre inflation pressure is displayed
for each tyre.
The current tyre inflation pressures can vary as a
result of vehicle operation or the outside temper‐
ature.
Current tyre temperature
Depending on the model, the current tyre tem‐
peratures are shown.
The current tyre temperatures can change as a
result of vehicle operation or the outside temper‐
ature.
Specified pressure
The specified pressure for the tyres on the front
and rear axle is displayed.
The specified pressures are values stored in the
vehicle.
The temperature effects of vehicle operation and
ambient conditions are taken into account in the
calculation for the specified pressure. Independ‐
ently of the weather conditions, tyre tempera‐
tures and driving times, the appropriate specified
pressure is always displayed.
The displayed specified pressure may vary and
differ from the value stated in the tyre inflation
pressure information on the door pillar of the
driver's door. The tyre inflation pressure can thus
280
Wheels and tyres
be corrected to the value of the displayed speci‐
fied pressures.
The specified pressure is adjusted immediately if
the load status is changed in the tyre settings.
Tyre statuses
General
The status of the system and tyres is indicated
by the wheel colour and message on the Control
Display.
If applicable, existing messages are not deleted if
the displayed specified pressure is not reached
on correction of the tyre inflation pressure.
All wheels green
▷
▷
One to four wheels yellow
There is a flat tyre or major loss of tyre inflation
pressure in the tyres shown.
Wheels grey
Tyre pressure losses might not be detected.
Possible causes:
▷
▷
▷
Online Edition for Part no. xxx - X/18
The system is active and is using the dis‐
played specified pressures for the warning.
In the case of tyres with special approval: the
system is active and is using the tyre inflation
pressures saved during the last reset for the
warning.
Malfunction.
During measurement of the tyre inflation
pressure, after confirmation of the tyre set‐
tings.
In the case of tyres with special approval: a
system reset is performed.