BMW 2 Series Owner's Handbook Manual page 299

The current tyre air temperatures can change
as a result of driving the vehicle or the outside
temperature.
Nominal pressure
The nominal pressure for the tyres on the front
and rear axle is displayed.
The stated nominal pressure takes account of
the temperature effects caused by driving the
vehicle and the outside temperature. The ap-
propriate nominal pressure is always displayed
irrespective of the weather conditions, tyre air
temperatures and length of journey.
The displayed nominal pressure may vary and
differ from the value stated in the tyre inflation
pressure information on the body pillar of the
driver's door. The tyre inflation pressure can
thus be corrected to the value of the displayed
nominal pressures.
The nominal pressure is adjusted immediately
if the load status is changed in the tyre set-
tings.
Tyre statuses
General
The status of the system and tyres is indicated
by the wheel colour and a message on the
control display.
Existing messages may not be deleted if the
nominal pressure is not reached when the tyre
inflation pressure is corrected.
All wheels green
▷ The system is active and bases any warn-
ings on the nominal pressures.
▷ In the case of tyres with special approval:
the system is active and bases its warnings
on the tyre inflations pressures saved at the
last reset.
Online Edition for Part no. 01405A5E758 - VI/22
Wheels and tyres
One to four wheels yellow
There is a flat tyre or major tyre pressure loss
in the tyres shown.
Wheels grey
Tyre pressure losses might not be detected.
Possible causes:
▷ Malfunction.
▷ The tyre inflation pressure is being meas-
ured, after confirmation of the tyre settings.
▷ For tyres with special approval: a system
reset is being performed.
For tyres with special approval:
performing a reset
1. "MENU"
2. "Vehicle apps"
3. "Vehicle status"
4. "Tyre Pressure Monitor"
5. Make sure that the tyre settings are correct.
Tyre settings, see page 298.
6. Switch on drive-ready state but do not drive
off.
7. Reset the tyre inflation pressure: "Perform
reset"
8. Drive off.
The wheels are shown grey and the following
appears on the display: "Resetting tyre
pressure...".
After driving for several minutes, the set tyre
inflation pressures are accepted as the speci-
fied tyre inflation pressures. The reset is com-
pleted automatically during the journey.
If the reset was successful, the wheels are
shown in green on the control display and the
following appears: "Reset successful."
You can interrupt your journey at any time.
The reset resumes automatically when you
continue driving.
MOBILITY
299