Steering Column Adjustment

Systems in the CIM Module - Steering Column Adjustment

The electric steering column adjustment system consist of the following components:

- CIM module
- 2 adjustment drive motors for forward/backward and up/down adjustment
- Hall sensors for position recognition

Principle of Operation

The steering column adjustment is electrically controlled by a button located on the left side of the steering column.




The electric steering column is adjusted by two motors in the up/down and in/out directions. The various positions are stored in the driver's seat module when one of the seat memory buttons are pressed.

The steering column is automatically moved to the uppermost forward position to provide easy entry and exit from the driver's seat.




There are no Check Control messages for the steering column adjustment because the driver receives immediate feedback in the event of a fault.

The CIM module will deactivate the steering column adjustment motors when overvoltage is detected (>16 V). The motors will be activated again when the voltage drops below 16 V for more than 2 seconds.

The motors are also protected from overheating by the CIM module. A temperature calculation is performed in the CIM based on activation time (in case of jamming) and the motors will be deactivated to allow a "cool down" time.