System Description - Tire Pressure Monitoring System: Notes
The tire pressure monitoring system is included in the software in the ABS Control Module -J104-. The system will recognize a slow and gradual decrease in tire pressure on a wheel. The DTC memory entries for tire pressure monitoring system are stored in the ABS Control Module -J104-. With the help of the ABS speed sensor, the TPMS compares the speed and rolling circumference of the individuals tires.
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
- Removing or installing one or multiple tires
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
System Malfunction in the ABS
If the ASR/ESP Indicator Lamp -K155- or the Traction Control Indicator Lamp -K86- indicate a malfunction in the ABS system, then the Tire Pressure Monitoring Display Indicator Lamp -K220- -arrow- will also illuminate. A malfunction in the tire pressure monitoring system has not been stored.
Indicator lamp cannot be turned off by pressing Tire Pressure Monitoring Display Button -E492-. In this case, perform the following:
-- Connect the Vehicle Diagnostic Tester and select "Guided Fault Finding".
Follow the instructions on the screen to perform the basic setting.