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General information
Sensors in the tire valves measure the tire infla‐
tion pressure and, depending on the model, the
tire temperature.
With use of the system follow further information
found under Tire inflation pressure, refer to
page 234.
Functional requirements
The following conditions must be met for the
system; otherwise, reliable flagging of a loss of
tire inflation pressure is not assured:
▷ After a tire or wheel replacement, a reset was
performed with the correct tire inflation pres‐
sure.
▷ After the tire inflation pressure was adjusted
to a new value, a reset was performed.
▷ Wheels with TPM wheel electronics.
Status display
Current status
The system status can be displayed on the Con‐
trol Display, e.g., whether or not the system is ac‐
tive.
Via iDrive:
1.
"Vehicle info"
2. "Vehicle status"
3. "Tire Pressure Monitor (TPM)"
The current status is displayed.
Tire conditions
General information
Tire and system status are indicated by the color
of the wheels and a SMS text message on the
Control Display.
All wheels green
System is active and will issue a warning related
to the tire inflation pressures stored during the
last reset.
One to four yellow wheels
A flat tire or major drop in the tire inflation pres‐
sure has occurred in the indicated tires.
Gray wheels
It may not be possible to identify tire pressure
losses.
Possible causes:
▷ Malfunction.
▷ The system is being reset.
Additional information
The status control display additionally shows the
current tire inflation pressures and, depending on
the model, tire temperatures. It shows the actual
values read; they may vary depending on driving
style or weather conditions.
Resetting the system
Via iDrive:
1.
"Vehicle info"
2. "Vehicle status"
3. "Perform reset"
4. Start the engine but do not drive off.
5. Reset tire inflation pressure: "Perform reset".
6. Drive away.
The wheels are displayed in gray and the follow‐
ing is displayed "Resetting Tire Pressure Monitor
(TPM)…".
After driving faster than 19 mph/30 km/h for a
short period, the set tire inflation pressures are
accepted as reference values. The reset is com‐
pleted automatically while driving.
After a successfully completed Reset, the
wheels on the Control Display are shown in
Seite 140
CONTROLS
Safety
140
Online Edition for Part no. 01402896586 - X/18
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