Level Sensor, Basic Function - GF32.31-P-2001A
Model all (CAR)
Example illustration of front axle level sensor
Example illustration of rear axle level sensor
Overview
This document contains information on:
- General
- Function
General
The level sensors detect the current vehicle level. This information is required for controlling the automatic headlamp range control (HRA), among other things.
Function
Each of the lower control arms has a respective linkage that transfers its raising and lowering movements to the levers of the level sensors.
These changes in the angles of the levers generate different voltages in the level sensors that are transmitted as permanent signals, e.g. to the Adaptive Damping System (ADS) control unit or to the suspension and damping system control unit, depending on the equipment installed.
The signals from the level sensors are used to calculate the vehicle level and therefore also to calculate the instantaneous damper stage (vehicles with adjustable damping or with air suspension) or for the automatic headlamp range control (LED headlamps).
In vehicles with adjustable damping or air suspension, level sensors are installed on all wheel suspensions.
On vehicles with LED headlamps and without adjustable damping or air suspension, level sensors are installed at the front and rear on one side. Depending on the vehicle involved, this can be the left or the right side.
Level sensors are installed on the wheel suspensions of the rear axle in vehicles with rear axle level control system.
| Vehicle and equipment | Front level sensor Left | Right front level sensor | Left rear level sensor | Right rear level sensor | Rear axle level sensor |
|---|---|---|---|---|---|
| Model 118, 177, 247 | |||||
| Vehicle with LED headlamps without adjustable damping | - | x (LED headlamps, dynamic) | - | x (Multi-link axle) | x (Torsion-beam axle) |
| Vehicle with adjustable damping | X | X | X | X | - |
| Model 167 | |||||
| Vehicle with LED headlamps without air suspension | - | X | - | X | - |
| Vehicle with air suspension | X | X | X | X | - |
| Model 206, 223, 232, 254, 295, 296, 297 | |||||
| All variants | X | X | X | X | - |
| Model 243 | |||||
| Vehicle with LED headlamps without adjustable damping | - | - | - | X | - |
| Vehicle with adjustable damping | X | X | X | X | - |
| Model 290, 213, 238, 257 (as of model year 2021) | |||||
| All variants | X | X | X | X | - |
| Model 293 | |||||
| All variants | X | - | X | X | - |
| Component descriptions | |||
| Level sensor, component description | Model 223 | GF32.31-P-5105A | |
| Model 243 | GF32.31-P-5105B | ||
| Model 206 | GF32.31-P-5105C | ||
| Model 297 | GF32.31-P-5105D | ||
| Model 295 | GF32.31-P-5105E |