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Tire Pressure Monitor TPM
Concept
The system monitors tire inflation pressure in
the four mounted tires. The system warns you
if there is a significant loss of pressure in one
or more tires.
General information
Sensors in the tire valves measure the tire in‐
flation pressure and, depending on the model,
the tire temperature.
With use of the system follow further informa‐
tion found under Tire inflation pressure, refer
to page 214.
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 infla‐
tion pressure.
▷ After the tire inflation pressure was ad‐
justed to a new value, a reset was per‐
formed.
▷ Wheels with TPM wheel electronics.
Status display
Current status
The system status can be displayed on the
Control Display, e.g., whether or not the sys‐
tem is active.
Using iDrive:
1.
"My Vehicle"
2. "Vehicle status"
3. "Tire Pressure Monitor"
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 re‐
lated to the tire inflation pressures stored dur‐
ing the last reset.
One to four yellow wheels
A flat tire or major drop in the tire inflation
pressure 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.
Additonal information
The status control display additionally shows
the current tire inflation pressures and, de‐
pending on the model, tire temperatures. It
shows the actual values read; they may vary
depending on driving style or weather condi‐
tions.
Resetting the system
Using iDrive:
1.
"My Vehicle"
2. "Vehicle status"
3. "Tire Pressure Monitor"
4. Start the engine but do not drive off.
5. Reset tire inflation pressure: "Perform
reset".
6. Drive away.
Seite 126
Controls Safety
126
Online Edition for Part no. 01402981298 - VI/17
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