The gearbox position sensor is a no-contact Hall sensor. The gearbox position sensor is attached to the hydraulic control unit (hydraulic selector unit).
The 5 inputs of the gearbox position sensor show each selector-lever position. The selector-lever position is transferred to the gearbox position sensor across a Bowden cable and is converted by the gearbox position sensor into a code. This code is transferred to the gearbox control and engine management system. 
The gearbox position sensor is connected via a wiring harness and a connector with the mechatronics module and is supplied with a voltage of 8.3 - 9.3 V.

| Index | Explanation | Index | Explanation | 
|---|---|---|---|
| 1 | Connector | 2 | Hydraulic unit | 
| 3 | Gearbox position sensor | 4 | Slide of the gearbox position sensor | 
The following system functions are described:
| Code table: | ||||
|---|---|---|---|---|
| 
 | Level A | Level B | Level C | Level P | 
| Selector-lever position | 
 | 
 | 
 | 
 | 
| 
 | Output for circuit sensor:  | |||
| P | 1 | 1 | 1 | 0 | 
| R | 0 | 0 | 0 | 1 | 
| N | 0 | 1 | 0 | 0 | 
| D | 1 | 0 | 1 | 1 | 
The gearbox position sensor with wiring harness and connector can be replaced separately.
Relevant faults, gearbox position sensor
In the corresponding test module, the following faults are treated:
No liability can be accepted for printing or other errors. Subject to changes of a technical nature