Level sensor, component description - GF32.31-P-5105GZ
MODEL 164.1/8 with CODE (489) Airmatic (air suspension with level adjustment and adaptive damping system ADS) up to Model Year 8
MODEL 164.8 with CODE (489) AIRmatic (air suspension with level adjustment without ADS adaptive damping system) with CODE (494) USA version up to Model Year 8
Shown on right front level sensor on model 164.1
Location
One left front level sensor (B22/8), right front level sensor (B22/9), left rear level sensor (B22/7) and a right rear level sensor (B22/10) each.
Task
The level sensors serve to determine the current vehicle level.
Function
The AIRmatic control unit (N51) supplies the level sensor with a rated voltage of 5 V. The level sensor uses this to provide two contrasting variable voltage signals, depending on the level in which the vehicle is in at any given time.
If the vehicle level changes, then a voltage signal increases linearly while the voltage of the contrasting signal decreases linearly.