Ok guys thank you for your help. I cleaned the switch as per [ref]Dark Diggler[/ref], it was filthy but to no avail! I then carried out procedure number 1 which then worked. I was going through the procedure allowing the window to come all the way up every time. No.1 details you to stop approx 4 inches then raise. This worked like a charm.
Here are all three procedures in case someone finds this post with the same issue. They were taken form another post but might help someone in my position.
Annnnnd relax! 8)
PROCEDURE #1
To de-initialize the windows:
Close both doors.
Lower both windows completely.
Immediately push the window switch down 4 times within 10 seconds.
Check that the automatic one-touch is not working.
To initialize the power windows:
Connect a battery charger to the vehicle. You don't need this step
Close both doors and the soft top (or hardtop installed).
Lower both windows completely.
Raise windows and hold the switches in the up position for one additional second after the windows reach the top.
Lower the windows 100 mm or approximately 4 inches.
Raise the windows and hold the switches in the up position for one additional second after the windows reach the top.
Close the windows using the one-touch feature function and ensure that this works correctly.
Check the anti-trap function by inserting a plastic rod with a diameter greater than 6 mm in the left side window between the door window and the soft-top/hardtop and then close the window with the one touch function. If the function is OK, the anti-trap function will respond.
Repeat step 8 above for the right side window.
Clear the "scaling fault" stored in the General module.
Note: Any brief interruption in performing the above steps may require for the entire initialization procedure to be repeated.
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PROCEDURE #2
Initialization is performed on the power window switch of the relevant door.
Requirements for correct initialization:
• Initialization with engine running
• Convertible top, doors and windows closed
Initialization comprises:
• Erasure of initialization
• Reinitialization
An initialization must be performed:
• In the event of malfunctions, e.g. no one-touch control function, no opening or if available no comfort function is possible
• After the power window drive has been replaced
• After work is carried out on the power window mechanism
• After a power supply interruption, e.g. disconnection of the battery or disconnection of the power supply to the door
• After the door window glass has been removed and installed or replaced
• After adjustment work on the door window glass
• After adjustment work on the convertible top
• After replacement of seals
Erasure of initialization:
• Open door window glass fully
• Operate power window switch in "Open" position four times within 10 seconds
This erases initialization of the power window, anti-trapping protection and toll function are inactive.
Check whether one-touch control (toll) function is inactive, otherwise repeat procedure.
Reinitialization:
Avoid a break between the two steps!
• Open door window glass fully
• Operate and hold power window switch in "Close" position (second switch stage)
• Once the upper end position has been reached, hold power window switch in "Close" position for approx. 2 seconds longer
• Open door window glass fully
• Operate and hold power window switch in "Close" position (second switch stage)
• Once the upper end position has been reached, hold power window switch in "Close" position for approx. 2 seconds longer
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PROCEDURE #3
Basically, BMW's power windows have a "position memory," which tells them where the window should be in the opening & closing sequence. Sometimes, if that sequence is interrupted, or if the battery is disconnected, or even for no apparent reason at all, they can simply "forget" where they are, and need to be re-set. This happend from time to time in my MINI, but since the window action in the Z4 is tied to the top opening & closing, it seems to be a bit more prone to occasional confusion.
But the good news continues! Barring some major mechanical malfunction, this is usually nothing that requires a trip to any dealer, nor anything more than about 30 seconds of your own time. Here's how easy it is:
- Sit in the car, and put the key in position 1, so you have power to the windows.
- Push and hold down the window switch, and keep it held down for 5 seconds after the window is all the way down. This re-sets the memory, telling the motor, in effect, "Remember where we are now? Good."
- Roll window back up, and release switch
Whitchurch
Finland