boot opens by itself when driving !

Pauly · Post by **Pauly** » Tue Mar 10, 2020 11:52 pm

flybobbie wrote: ↑Tue Mar 10, 2020 11:26 pm Back of the emblem.

Cheers, much appreciated

RobbiZ4 · Post by **RobbiZ4** » Wed Mar 11, 2020 12:59 pm

Pauly · Post by **Pauly** » Thu Mar 12, 2020 7:22 pm

Cheers RobbiZ4
I will explore your advice this weekend, when I have time to remove all of the trim from the boot, cheers for the post

RobbiZ4 · Post by **RobbiZ4** » Thu Mar 12, 2020 7:46 pm

RobbiZ4 wrote: ↑Wed Mar 11, 2020 12:59 pm
Pauly wrote: ↑Sat Mar 07, 2020 7:02 pm I have disconnected the top break light as it activates the boot latch, but even if I leave it disconnected, pressing the brake still opens the boot.
Could you please explain a bit more or better with a photo, what has been disconnected?

Pauly · Post by **Pauly** » Sat Mar 14, 2020 1:40 pm

: 9C6B0708-A0CF-4A31-843C-6B5305F1976B.jpeg (257.65 KiB) Viewed 2007 times

: D75E13C7-C805-48CC-828A-E37340665D27.jpeg (199.37 KiB) Viewed 2007 times

Followed your advise RobbiZ4 and this what my connectors looked like when removed

Pauly · Post by **Pauly** » Sat Mar 14, 2020 1:43 pm

: B65962D8-355A-4C63-8AF4-B1C150A13F79.jpeg (194.52 KiB) Viewed 2004 times

: B80B130E-4A84-4D32-AA8D-ECFAD7F412F6.jpeg (185.29 KiB) Viewed 2004 times

Flybobbie, I also removed the micro switch pictured as you mentioned this is an issue, a number is printed on it 71244709 but I can’t seem to locate that on the web to purchase a new one, have you ever replaced this switch? Thanks for your patience, I’m not mechanical minded

clarker63 · Post by **clarker63** » Sat Mar 14, 2020 2:28 pm

Pauly wrote: ↑Sat Mar 14, 2020 1:40 pm 9C6B0708-A0CF-4A31-843C-6B5305F1976B.jpegD75E13C7-C805-48CC-828A-E37340665D27.jpeg

Followed your advise RobbiZ4 and this what my connectors looked like when removed

These definitely look rather corroded with water damage. Have you cleaned them out and tried again?

RobbiZ4 · Post by **RobbiZ4** » Sat Mar 14, 2020 6:05 pm

Pauly · Post by **Pauly** » Sun Mar 15, 2020 9:31 pm

Congratulation! You got it!
Clean both parts of this blue connector with some alcohol using a smal (tooth) brush. Maybe some WD40 might be helpful for the contacts.
[/quote]

Seems like it’s sorted, been out for some petrol

pressed the break both on the move and stationary and no random boot opening, think it’s sorted; thanks for the many replies from a number of people-much appreciated

RobbiZ4 · Post by **RobbiZ4** » Sun Mar 15, 2020 11:49 pm

StuartH wrote: ↑Sat Feb 22, 2020 12:59 pm Same problem started on mine this morning. Any solutions or idea of repair cost ?

Hi Stuart, what about you, any other solution found?

StuartH · Post by **StuartH** » Sun Jul 19, 2020 7:06 am

Sorry for the ridiculous delay. My issue was definitely water. It had been sat in the rain without moving for a couple of weeks. I blew the water out with a leaf blower & it allowed me to drive for a few miles before it unlocked again. I repeated the process & it hasn't happened since. Can only assume that there was water causing a short. We had a period of prolonged wet weather & the car isn't a daily so I assume that water had accumulated in the mechanism.

DannyStark · Post by **DannyStark** » Sun Feb 27, 2022 9:09 pm

This exact same symptom has just started on our car.

I’ve just ordered some trim removal tools and I’m going to try and track it down.

Can any body point me in the right direction. To identify the blue connectors mentioned earlier in this thread…?
D

DannyStark · Post by **DannyStark** » Thu Mar 03, 2022 5:27 pm

Found the connector behind the driver side rear light cluster, wiggled it and the fault disappeared.

Where it was, is a nightmare to get at to separate, inspect and clean. Since it’s right behind the boot looking system frame. As well as the plastic trim behind the lights were not coming off easily, in my case.

So I’ll monitor it for now and I’ve stuck the car in the garage, to keep it out the rain.
D.

Mojito · Post by **Mojito** » Fri Mar 04, 2022 10:33 am

Hi,

It looks like others have already come to the rescue here, but this might help someone with some additional information relating to this issue. I no longer have my E89, but I posted a thread on a closely related problem a few years ago.
My specific issue was failure of the boot roundel to open the boot, but it was caused by corrosion on the same blue connector block - just a different sympton. This corrosion is caused by water ingress from the seal around the top edge of the boot opening and it's an easy fix. It's also quite easy to access this connector block when you know how.

I intended to put a link to the thread here, but my posting skills evading me today - sorry

It's posted under E89 problems Thu Jan 07, 2021 and called "Another Boot not opening from boot lid roundel - cause and solution".

Hope it's of use.

Z4-forum.com

Z4-forum.com