AAC pushbutton control module replaced by new version - BT83.40-P-0001-02S
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
MODEL WDB140.### #A as of 1.9.95 with CODE (581a) Air conditioning (automatic)
The new AAC pushbutton control module (N22) is equipped with a K1 serial interface (data bus from instrument cluster to pushbutton control module) and K2 (data bus from pushbutton control module to instrument cluster).
The following signals are transmitted via the K1 serial interface:
- Outdoor temperature
- Coolant temperature
- Vehicle speed
- Engine speed
- Illumination (circuit 58d)
- °F/°C
- Full load cut-off (diesel)
- Acceleration recognition (gasoline)
The following signals are transmitted via the K2 serial interface:
- Refrigerant pressure
- Idle speed increase (gasoline)