Components

Components

Car Access System (CAS)

The GAS contains the master functions of the power window system. It is also responsible for signalling the convenience open/closed requests.

Electric Window Lift Assemblies

The electric window lift assemblies consist of an electric motor/module with integrated hall sensors for distance and speed sensing. The anti-trap strips in the door frame of the predecessor E38 have been deleted. The module integrated into the assembly receives the control requests from the door module via a PWM signal, it then provides the appropriate voltage to control the operation of the motor within an infinitely variable speed range up to full voltage. The window motor/modules must be initialized.

The window regulators are of the cable operated design as used in the E38.

Door Modules

Each door contains a door module for the control of all functions contained or attached to the door. The door module is located inside of the door attached to the inner door carrier.

The door module receives the control requests from the window switches and carries out the allowed operation of the motor. The control is based on the status signalled from the GAS and the current condition of the window as detected by the hall sensors in the motor assembly.

Window Switches

The window switches of the E65/E66 are of the press/pull type as first seen on the E46. The drivers door switch block is a control unit that communicates with the door module via a local P-bus (single wire:9.6kbps).




The drivers door module signals the status of all of the switches of the drivers switch block to the other door modules and the GAS over the K-CAN-P.

The single switches in the passenger doors are conventional ground switches that communicate 5 statuses over 2 wires as used on the predecessor E38.