GF40.15-P-5127TR System Activation Button, Component Description

GF40.15-P-5127TR System activation button, component description
- 211 as of 1.6.05
- with CODE (475) Tire pressure monitor (Siemens)
- except CODE (494) USA version
- except CODE (498) Japan version
- 211 as of 1.7.05
- with CODE (475) Tire pressure monitor (Siemens)
- with CODE (494) USA version
- with CODE (498) Japan version
- 211
- with CODE (470) Tire pressure monitor (base)
- with CODE (494) USA version

Component Identification:

Task
The TPM system is permanently operational and is not actively operated by the driver. Each time CAN B is awoken (starting procedure or ignition "ON") the TPM [RDK] control unit (N88) starts a reinitialization and starts to send messages to the instrument cluster (A1). A new activation of the TPM system can be triggered via the scroll forward/back button and button + and -, setting of specific functions and volume controls as well as the instrument illumination rheostat and reset button (A1r1) on the instrument cluster.

The TPM system can be reactivated in the following cases:
^ The tire pressure has been changed (e.g. after refilling).
^ After each wheel/tire change
^ After fitting new wheels or tires

When the TPM system is activated, the air pressure values of the wheels set by the driver are stored as specified monitoring data in the TPM [RDK] control unit.