Wheel sensor, component description - GF40.15-P-5126CW
MODEL 204.0/2 with CODE (470) Tire pressure monitor (base) up to Model Year 08
Location
The tire pressure sensors are screwed securely into each respective rim.
Design
Each tire pressure sensor is connected by means of a mounting screw to the filling valve and together they form an assembly unit. The assembly unit is attached to the rim flange using a counter nut.
The complete assembly unit has to be changed.
A tire pressure sensor consists of the following components:
- Pressure sensor
- Temperature sensor
- High-frequency transmitter
- Sensor battery for power supply (service life approx. 10 years)
Task
The tire pressure sensor's primary task is to measure pressure/temperature. The measuring range extends from p = 0 and 5.5 bar. During a journey the tire pressure sensors transmit 6 data packages every t = 60 s. These data telegrams transmit the absolute pressure, tire pressure temperature, wheel identifier (ID) and status information (manufacturer, direction of rotation, operating mode).
The tire pressure monitor control unit receives the data telegrams and (following a teach-in phase) assigns the wheel identifiers (ID) to the wheels fitted to the vehicle.
A fault message is not displayed while the tire pressure monitor control unit is unable to recognize the vehicle's wheel identifiers (ID) during the initial startup. After a tire pressure sensor has been replaced each new tire pressure sensor undergoes teach-in and is monitored for a new wheel identifier (ID) after a. journey of approx. t = 10 min.