Tire Pressure Monitoring System Description

Tire Pressure Monitoring System Description

General Information

The tire pressure monitoring indicator system is a component of the software in the Anti-lock Brake System (ABS) control module. The system will recognize a slow and gradual decrease in tire pressure on a wheel. Diagnostic Trouble code (DTC) entries for tire pressure monitoring are stored in the ABS control module. With the help of the ABS sensors, the Tire Pressure Monitoring System (TPMS) compares the speed and rolling circumference of the individuals wheels.

After the following work and/or changes and with the ignition turned on, the tire pressure monitoring display button must be pressed until the confirmation chime sounds:

• Tire pressure change

• A change in one or more tires

• Changing a tire, for example, from front to rear

• Removing or installing one or multiple tires

If the rolling circumference of a wheel changes, the tire pressure monitoring display indicator lamp lights up in the instrument cluster. Rolling circumference of a tire may change due to:

• Insufficient tire pressure

• Structural damage on tires

• Load on vehicle on one side

• High load on one axle, when towing a trailer for example

• When snow chains are used

• When the spare tire is installed

• One wheel is replaced

System Malfunction in the ABS System

If the ASR/ESP indicator l lamp or the traction control indicator lamp indicate a malfunction in the ABS system, then the tire pressure monitoring display indicator lamp - arrow - will also illuminate. A malfunction in the TPMS will not be stored in the system.






Indicator lamp cannot be turned off by pressing Tire Pressure Monitoring Display Button. In this case, perform the following steps:

- Connect the Vehicle diagnostic tester and select "Guided Fault Finding".

Chassis

Brake System

01-OBD-capable system TRW 440

Anti-lock braking system ABS/EDL/ASR/ESP

Functions

Tire Pressure Monitoring System / tire pressure warning

Follow the instructions on the screen to perform the basic setting.

Perform the basic setting.

After every change at wheels, the button SET must be pressed with ignition switched on and vehicle standing still until a signal tone sounds. The signal tone confirms the basic setting.






Adapting tire sizes

- Connect the Vehicle diagnostic tester and select "Guided Fault Finding".

Chassis

Brake System

01-OBD-capable system TRW 440

Anti-lock braking system ABS/EDL/ASR/ESP

Functions

Tire Pressure Monitoring System / tire pressure warning

Follow the instructions on the screen to perform the basic setting.