The window switch in the driver's door is connected to both door modules on the driver's side using an LIN (local interconnect network).
The driver's door module is also connected to the CAN (controller area network) and the passenger door module using the MS GEM.
The window switches in the passenger door and the rear doors are directly connected to the relevant door module.
On the passenger side, the FDM and RDM are connected using an LIN.
The windshield heater
The windshield heater can only be operated when the engine is running.
The windshield heater is deactivated automatically after 4 minutes if the windshield heater switch has not already been pressed or the engine switched off.
The heated rear window can only be operated when the engine is running.
When the heated rear window is turned on, the GEM sends a signal to the right and left FDM using MS CAN, which activates the heating elements in the exterior mirrors.
The heated rear window is deactivated automatically after 14 minutes if the heated rear window switch has not already been pressed or the engine switched off.
2008.50