FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Tire Pressure Monitoring System




Tire Pressure Monitor TPM

Functional requirements:
The system must have been reset when the inflation pressure was correct; otherwise, reliable signaling of a flat tire is not ensured. Always use wheels with TPM electronics to ensure that the system will operate properly. Reset the system after each correction of the tire inflation pressure and after every tire or wheel change.

The system does not operate correctly if it has not been reset. For example, a flat tire may be indicated despite correct tire inflation pressures.

The system is inactive and cannot indicate a flat tire:
- For a mounted wheel without TPM electronics.
- When the TPM is disturbed by other systems or devices with the same radio frequency.

Status display:
The current status of the Tire Pressure Monitor TPM can be displayed on the Control Display, e.g., whether or not the TPM is active.
1. "Vehicle Info"
2. "Vehicle status"
3. "Tire Pressure Monitor - TPM"

The status is displayed.

Status display:
The tire and system status is indicated by the color of the tires
- A change in the tire inflation pressure during driving is taken into account.
- A correction is only necessary if this is indicated by the TPM

Wheels, green:
- The tire inflation pressure is equal to the target state.

One wheel is yellow:
- A flat tire or major drop in inflation pressure in the indicated tire.

All wheels are yellow:
- A flat tire or major drop in inflation pressure in several tires.
- The system was not reset after a wheel change and thus warns based on the inflation pressures initialized last.
- A flat tire in one or more tires while the system is being reset.

Wheels, gray:
The system cannot detect a flat tire. Reasons for this may be:
- TPM is being reset.
- Disturbance by systems or devices with the same radio frequency.
- Malfunction.