Driver's Door (Without KGM Body Gateway Module)

Power Windows, Driver's And Passenger's Door
Functional description, see BMW Technology:
TIS -> Documents> SI Technology -> 61 05 03 (025)

Notes on function
Up to 09/2005, the power-window motors of the driver's and passenger's door are activated by the door modules. The door modules contain the relays and electronic evaluation unit for the anti-trapping mechanism, anti-repeat circuit and the fault memory.

As of 09/2005, the door modules are no longer required.The power windows in the front doors are controlled by the body gateway module (KGM).

The central functions of the power windows (convenience operation and conditions required for switch-off) are controlled by the Car Access System (CAS).

Anti-trapping protection
Two Hall sensors are fitted in the power window mechanism to register the direction of rotation and speed of the power window motor. The signals are transferred to the door module and evaluated there together with the motor voltage. If a block towards 'close window' is detected, the power-window motor stops and then moves briefly towards 'open window' (= reverse).

Emergency closing and panic mode
Emergency closing is for intentional closing of the side windows with the anti-trap function.To do this, the power-window switch must be pressed and held. On detection of a block (trapping), the side window is only opened a few millimetres. The function is active at a speed of up to 16 km/h.

In the panic mode, the window can be closed without the active anti-trapping function. If trapping is detected during emergency closing (power window switch pulled beyond pressure point), briefly let go of the switch and pull it once again beyond the pressure point within 4 seconds and hold in that position. The window is now closed with maximum power and at maximum speed.

Letting go of the switch interrupts the emergency closing or panic mode.

Note: If the window is closed in the panic mode, the Check Control message �power window anti-trapping mechanism� is displayed in the on-board monitor.

Initialization
So that the anti-trapping mechanism works reliably, the upper limit position of the window regulator motor must be learned on initial operation of a power-window motor or after repairs.Initialization is also required if the door module or the body gateway module is replaced.

For the initialization, the side window must be moved to the upper limit position.

Once the window has reached the upper limit position, keep the switch pulled for approx. 5 seconds. Subsequently, the power window is initialized.

Note: The initialization must always by run with the power window switch on each door.

Anti-repeat circuit
An anti-repeat circuit is provided to protect the power window motor from overheating. After approx. 5 complete window movements, the power window motor is switched off for a few seconds.

Switch block, driver's door
The switch block in the driver's door can be used for operation of all the windows of all doors. In addition, the child locks for the rear windows can be activated. The switch block is connected across an LIN bus (LIN = Local Interconnect Network) with the door module of the driver's door.