Tire Monitoring System: Service and Repair

The tire pressure monitoring system is included in the software in the ABC control module -J104-. The system will recognize a slow and gradual decrease in tire pressure on a wheel. DTC memory faults for tire pressure monitoring are stored in the ABS control module. With the help of the ABS speed sensor, the TPMS compares the speed and rolling circumference of the individual wheels.

After the following work and/or changes and with the ignition switched on, the tire pressure monitoring display button -E492- 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.

If a tire has changed in circumference, the tire pressure monitoring display indicator lamp -K220- in the instrument cluster will come on. Rolling circumference of a tire may change due to:
- Insufficient tire pressure.
- Structural damage on tires.
- Vehicle is loaded heavily on one side.
- High load on one axle, when towing trailer for example.
- When snow chains are used.
- Spare wheel is mounted.
- One wheel is replaced.

Tire Pressure Monitoring System, Performing Basic Setting

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





Note: The SET button in inside the glove compartment.