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Electric Hood Issue Z4 E85 Facelift

Discuss problems you have had or are having with your Z4
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TheNextFederer
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Sun May 14, 2023 8:42 pm

Hi,

Has anyone had an issue with their hood and windows automatically opening with the ignition switched on ?

I raised the rear boot shelf to stop the roof opening but both windows still open.

ISTA diagnosis below if it makes any sense to anyone.

Thanks

Z4 E85 2006 Facelift
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j3nks79
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Electric Hood Issue Z4 E85 Facelift

Post by j3nks79 » Sun May 14, 2023 8:48 pm

Looks like a problem with your GM5 module
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TheNextFederer
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Sun May 14, 2023 9:08 pm

GM5 module ?The central locking still works with both key and remote.

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Electric Hood Issue Z4 E85 Facelift

Post by BumpyZ4 » Tue May 16, 2023 8:24 pm

Erase all the codes and see which ones come back, some of these maybe old codes. This will give us a clearer picture of what's going on.
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TheNextFederer
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Thu May 18, 2023 11:16 pm

Hi,
My laptop just stopped working so I've ordered an Ancel BM700 handheld scanner.

Fingers crossed for some meaningful results.

Thanks

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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Mon May 22, 2023 8:30 am

Hi,
My Ancel BM700 scanner came back with these errors for both windows.

Could be that the windows needs resetting but there are no errors with the convertible top module.
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TheNextFederer
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Mon May 22, 2023 1:01 pm

I managed to clear the fault code for the passenger window but error reappears for driver window.
Scanner points to an issue with the body control module unit (Part number 6988086)

Both windows still open when unlocking the door with the key.

Roof is currently disabled from opening also with the boot shelf raised.
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Mon May 22, 2023 1:02 pm

Hardware diagnosis
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Mon May 22, 2023 1:03 pm

Hardware diagnosis
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enuff_zed
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Electric Hood Issue Z4 E85 Facelift

Post by enuff_zed » Mon May 22, 2023 1:03 pm

Firstly. You will get that code if you check it with the door open.
Secondly, as has already been said, probably a GM5 issue
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Mon May 22, 2023 1:19 pm

Thanks enuff_zed.

I'll try and source a GM5 module (Preferably uncoded).

People on this forum know more about what is going on than the dealerships !

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Electric Hood Issue Z4 E85 Facelift

Post by enuff_zed » Mon May 22, 2023 2:35 pm

TheNextFederer wrote: Mon May 22, 2023 1:19 pm Thanks enuff_zed.

I'll try and source a GM5 module (Preferably uncoded).

People on this forum know more about what is going on than the dealerships !
From recent experience all you need to get is the correct sort. Take yours out and check the label. If it says Star12 Low then you need one of those, if it doesn’t then get one that doesn’t. It should plug in and work. Only things that may differ is if either unit had been coded with any different functions, roof lowering and raising on the key for example
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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Mon May 22, 2023 2:43 pm

Thanks enuff_zed.

Will do.

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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Mon May 22, 2023 9:35 pm

Hi enuff_zed,

I thought I'd check the fuses and noticed that some were mixed up on the bottom row and after realigning the issue with the windows opening with ignition on miraculously disappeared!

The scanner showed the anti-trap error on the driver window (Passenger side was fine).

I then noticed than the one touch driver window movement was not working going up (But was working going down).Passenger side completely works.

This leads me to believe that the driver switch is faulty and is confusing the GM5.

So I have ordered a new switch.

Hope that this could be the problem before entering the GM world (I'm dreading that!)

Remote key and central locking/unlocking is working now.

:)

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Electric Hood Issue Z4 E85 Facelift

Post by TheNextFederer » Thu Jun 01, 2023 7:54 pm

Just updating you guys that a simple key fob battery replacement solved my problem!
Thanks to everyone for your help and advice (It certainly eliminated some possibilities).

Long live this forum.
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