BMW M4 COUPE Owner's Handbook Manual page 130

Controls
The system has been triggered or is faulty.
Immediately have the system checked by a
Service Partner of the manufacturer or another
qualified Service Partner or a specialist work‐
shop.
Tyre Pressure Monitor TPM
Principle
The system monitors the tyre inflation pres‐
sure in the four fitted tyres. The system warns
if the tyre inflation pressure in one or more
tyres has fallen considerably.
General
Sensors in the tyre valves measure the tyre in‐
flation pressure and, depending on the model,
the tyre temperature.
To operate the system, also follow the other
information and notes under tyre inflation pres‐
sure, see page 207.
Operating requirements
The following requirements must be met for
the system, otherwise reliable signalling of a
loss of tyre inflation pressure is not ensured:
▷ After every tyre or wheel change, a reset
must be carried out with the correct tyre
inflation pressure.
▷ A reset must be carried out after the tyre
inflation pressure has been adjusted to a
new value.
▷ Wheels with TPM wheel electronics.
Status display
Current status
The status of the system for example whether
the system is active, can be shown on the
Control Display.
130
Safety
Online Edition for Part no. 01402981699 - VI/17
Via iDrive:
1. "My Vehicle"
2. "Vehicle status"
3. "Tyre Pressure Monitor"
The current status is displayed.
Tyre statuses
General
The tyre and system status is denoted by the
wheel colour and text on the Control Display.
All wheels green
System is active and is using the tyre inflation
pressures saved during the last reset for the
warning.
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 cannot be detected.
Possible causes:
▷ Malfunction.
▷ System reset is performed.
Additional information
The current tyre inflation pressures and, de‐
pending on the model, tyre temperatures are
also displayed in the status Control Display.
The values shown are current values and may
change due to the effects of driving conditions
or weather conditions.
Performing a reset
Via iDrive:
1. "My Vehicle"
2. "Vehicle status"
3. "Tyre Pressure Monitor"
4. Start the engine but do not drive off.