GF40.15-P-3200-02A Wheel Sensor, Function

GF40.15-P-3200-02A Wheel sensor, function
- 211
- with CODE (475) Tire pressure monitor
- 211, 230 up to 31.5.05
- with CODE (475) Tire pressure monitor
- except CODE (494) USA version
- except CODE (498) Japan version
- 211, 230 up to 30.6.05

Component Identification:

Function
As part of energy management the left front TPM [RDK] wheel sensor (A69/1), right front TPM [RDK] wheel sensor (A69/2), left rear TPM [RDK] wheel sensor (A69/3) and right rear TPM [RDK] wheel sensor (A69/4) switches over automatically between the following operating modes:
^ Energy-saving mode, as long as the component is in store, not fitted to the vehicle.
^ As long as no pressure change which is dependent on specified value, at intervals of 55 seconds data telegrams are transmitted for system monitoring and for detecting very slow pressure changes.
^ The measurement rate and transmission rate is increased (0.8 seconds) if a rapid pressure change has been detected at a wheel. The TPM control unit (N88) is thus provided with a number of measured values within a short period of time, allowing reliable evaluation of the pressure change.
^ Switching off the measurement electronics and transmission electronics at temperatures greater than 120 degrees C, as reliable recording of data and data transfer is not guaranteed in this driving condition. The measurement electronics and transmission electronics are switched on again automatically when cooled down less than 100 degrees C.

Energy management
Due to the finite space the battery size and as a result the battery capacity is limited. An intelligent energy management system provides an estimated service life of approx. 7 years with a single battery.

If the battery is defective the left front TPM [RDK] wheel sensor (A69/1), right front TPM [RDK] wheel sensor (A69/2), left rear TPM [RDK] wheel sensor (A69/3) or right rear TPM [RDK] wheel sensor (A69/4) must be exchanged.