Cruise Control Switch: Description and Operation

GF30.20-P-2100SX Component Description For The CC [TPM] Switch
- with CODE (233) Distronic Plus
- except CODE (494) USA version
- up to model year 08


Location

Component Identification:

The CC [TPM] switch is located at the top left of the steering column module (N80).

Task
The CC [TPM] switch has the following tasks:
^ Activating/deactivating functions of DISTRONIC PLUS or the Variable Speed Limiter
^ Increasing/reducing the set speed/target speed in 1 km/h or 10 km/h increments (two settings)
^ Setting the target distance for DISTRONIC PLUS

Design

Component Identification:

Function

Component Identification:

When the Cruise control pushbutton switch is operated, two switching contacts are always activated simultaneously. The actual input takes place by closing the switching contacts (storing the target speed). The safety contact must close simultaneously so that the input is accepted.

The distance potentiometer allows the driver to adjust the target distance to the preceding vehicle to suit his/her own personal taste.
The setting range of the target distance is divided into six increments and is approx. 1.0 s to 2.0 s depending on vehicle speed.
Within this setting range the legally prescribed minimum distance is always guaranteed.

The CC [TPM] signals are read in by the steering column module and transmitted via the chassis CAN to the radar sensor control unit (SGR) (N62/1) for evaluation.