GF30.20-P-2100IC Component Description For the Cruise Control Pushbutton Switch

GF30.20-P-2100IC Component Description For The Cruise Control Pushbutton Switch
- ENGINE 647.961 in MODEL 211
- ENGINE 648.960 in MODEL 220
- ENGINE 648.961 in MODEL 211





Arrangement
S40/4 CC pushbutton switch (on model 211)
S40/4 CC pushbutton switch with variable speed limitation (on model 220)
S40/4s1 Resume from memory
S40/4s2 Decelerate and set
S40/4s3 Accelerate and set
S40/4s4 Off
S40/4s6 Variable speed
S40/4v1 Yellow LED, variable speed limiter

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

Task
The TPM switch switches the cruise control functions, the Distronic (if Distronic is installed) and the variable speed limit (except for model 211 (United State of America)) on and off.

Function
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 speed). The safety contact must close simultaneously so that the input is accepted.

The shift signals from the TPM switch are detected by the steering column module and sent over the CAN data bus.

The CDI control unit (N3/9) analyzes the shift signals for cruise control operation and the variable speed limit (except for model 211 (United State of America)).
For a Distronic the DTR control unit (N63/1 up to 06/04 or A89n1 airbag 07/04) analyzes the shift signals for Distronic operation.