Initialize Power Windows II

Initialize Power Windows

A window crank must be initialized to make sure that the anti-trap mechanism works in a trouble-free manner. Window cranks without an anti-trap mechanism cannot be initialized.
An anti-trap mechanism is always present if the window can be closed in automatic mode (toll function). There are then additional sensors in the power window drive that can record the position of the window in question. No antitrap mechanism is required for the "window open" automatic mode.

Initialization
On initialization of the power windows, two parameters are learned by the control unit:
- Top and bottom end position (normalization of power windows)
- Power characteristic curve for opening and closing (learning the characteristic curve).

A power window is to be initialized:
- In the event of malfunctions, e.g. no one-touch function (automatic mode) possible for closing, no convenient closing possible, window reverses without anything being trapped
- Following the replacement of the power window drive
- Following repair work on the window seals or power-window mechanism
- Following the replacement or reprogramming of the control unit

Preconditions
The following requirements must be met:
- Adequate battery voltage present, connect charger.
- All door closed and terminal 15 switched on.
- Comply with the instructions in the service function Initialize power window precisely.

Performing the initialization with the service function







1. Run the automatic testing procedure to learn the top and bottom end positions.
During the testing procedure, the window opens and closes fully.

NOTE:
If the window reverses at the top end stop when the diagnosis command "Initialize power window" is running, proceed as follows:
Open the convertible top and repeat the function for learning the end positions. Then close the convertible top again and continue the service function.

2. Do not terminate the service functions, rather get into the vehicle via the driver's door.
3. Switch off the ignition and terminal "R" and then open and close the driver's door (vehicle entry is simulated).
4. Switch on the ignition (terminal "15") again and open the window (the one to be initialized) completely.
5. Place the palms of your hands on the rear end of the door (see marked area (1) in graphic), pull the power window switch into the 2nd position and hold it there. The window moves up and reverses.
6. Let go of the switch and take your hands off the door. Immediately pull the switch to position 2 again and hold there until the window is closed.

IMPORTANT: The window is closed in the panic mode function without active anti-trapping protection. Risk of injury.

This testing procedure teaches the stiff movement of the sealing system.

7. When the window is closed, switch off the ignition and terminal"R" and get out of the vehicle.
8. Continue the service function on the diagnostic unit. The diagnostic unit sends the "Sleep Mode" command to the footwell module. The data are stored in the control unit.