E85 rear window

2003 - 2009, roadster, coupe, facelift
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asd911
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E85 rear window

Post by asd911 » Sat Jan 25, 2020 8:55 pm

Hi everyone,

I have just bought a 2003 Z4 and the alarm turns on after 30 seconds without any reason.
I have checked with Inpa the contacts and it shows that the rear window is open. :? See on the attached picture.
Does anyone know where is the micro switch of the rear window, please? Or what the problem could be?

Thank you in advance!
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buzyg
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E85 rear window

Post by buzyg » Sat Jan 25, 2020 9:43 pm

:? Try pushing the corners of the bonnet down.

Welcome by the way. :)
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wonkydonkey
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E85 rear window

Post by wonkydonkey » Sat Jan 25, 2020 10:29 pm

If the bonnet COULD be the issue, disconnect the bonnet trigger switch and see if the problem goes away. The switch is located right at the back of the engine bay, at the top, down the centreline of the car.
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firebobby
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E85 rear window

Post by firebobby » Sat Jan 25, 2020 11:14 pm

Welcome to the forum, a photo of your car would be nice too
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Jembo
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E85 rear window

Post by Jembo » Sat Jan 25, 2020 11:21 pm

Welcome ... +1 for bonnet sensor & :worthless:
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asd911
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E85 rear window

Post by asd911 » Sun Jan 26, 2020 7:32 am

Hi,

Thank you for the welcoming.
If I disconnect the bonnet sensor, the alarm still turn on after 30 secs and the inpa also shows: contact hood open.
I have tried to push and hold by hand the bonnet sensor but the alarm still turns on.
Due to the fact that the inpa only shows the rear window, I guess that sensor could be the issue. But I don’t know where is it located.
Anyway the rear window heating is working perfectly.
I’m waiting for the ideas. :roll: :roll:
Thank you in advance!

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wonkydonkey
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E85 rear window

Post by wonkydonkey » Sun Jan 26, 2020 10:20 am

asd911 wrote:
Sun Jan 26, 2020 7:32 am
If I disconnect the bonnet sensor, the alarm still turn on after 30 secs and the inpa also shows: contact hood open.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Due to the fact that the inpa only shows the rear window, I guess that sensor could be the issue.
I'm confused now, as you appear to have contradicted yourself here. At first you said that disconnecting the bonnet switch flagged up a new error message, but then you said that you only get one error message.

If you really DID get a new error message when you disconnected the bonnet switch,then I would say that the bonnet switch is not the issue and you need to look elsewhere.
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