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Discussion Starter · #1 ·
A few days after I got my X3 (2.8i 2011 with comfort access and electronic trunk) my wife asked me if I had left the trunk open, since, when she got to the car - which was parked in front of the house - it had the trunk wide open (I parked it there about an hour before).

Event though I knew I had not left it open, I didn't think much of it, and assumed that maybe I pressed the wrong button while closing it. After all, I only had it for a day or 2 so was still getting familiar with it.

Well, just the other day (about 2000 kms into it's life now), the trunk opened spontaneously WHILE driving (about 25mph). Now, I'm pretty sure this is not something that should be able to happen, regardless of which buttons you may or may not accidentally press - so there is definitely something wrong here.

Wondering if anyone else has experienced this issue - I could not find any mention of this on the forum yet.

Thanks!
 

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Discussion Starter · #3 ·
..or was it user error

Well, more details emerge, and there is a possiblity it could have been "user error" :)

I asked the wife - who was the one it happened to - and she said, "she was messing with her bag, which had the keys in it", so maybe she had pressed the button while doing so. And as for the "..while driving" part, it could be that she noticed it while driving, but it had actually openened while stopped at a light. I wanted to test it and it DOES seem you can open it when coming to a stop. And you might not notice till you hear the driving noise from the outside.

sooo...since it's not something easy to troubleshoot by BMW, I'll leave it at this and see if another clearer incident will happen, especially if there is a possibility it was just user error.
 

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My wife just notified me that this happened 2 days in a row. 2011 X3 w/comfort access, had it for 6 months.

Day1
After she opens trunk then closes it w/the closing button on the trunk, she went inside the car and car automatically locked and the trunk automatically opens by itself 3/4 of the way.
She starts the car (unknown that the trunk is open) the headlights keep flashing and the car told her the trunk door is open.
She left the engine running, opens the door, press the close trunk button.

Day2
After she opens trunk then closes it w/the closing button on the trunk, she went inside the car and car automatically locked and the trunk automatically opens by itself 3/4 of the way.
She noticed it this time (did not start the engine), left key fob in passenger seat, went to the back to close the trunk (via the trunk button), comes back into the car. Car automatically locked and the trunk automatically again opens by itself 3/4 of the way.

Will investigate this weekend and try the other key fob.
 

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Weird. I am not near the car right now, and I cannot verify it, but she could have locked the car while the driver's door was still open. Then she shuts the door, the car tries to engage the central lock, and opens the trunk, because it detects the key inside. Anyway it all looks like she shuts the door of the locked car while the key is inside. If that's not the case, I would contact the dealer.
 

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Hey guys, this happened to me this weekend.

I have one of the floor mats in the back and I think it had shifted.

We closed the back hatch and were serveral feet away when it opened itself back up. I shifted the mat to make sure it was in place and reclosed the hatch and it didn't open back up.

I am wondering if you the problems you guys are having is that you had been in the back and it just didn't latch because something was just barely in the way.
 

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Add ours to the list!

We have a 2012 X3 28i with the convenience option that we picked up via the Performance Center Delivery program in February. A couple of times now my wife has come back in before she left for work and asked if I had opened the tailgate for any reason and not closed it. I had not either time. Then last week it was parked in the garage and the tailgate opened during the night and hit the overhead door. Unfortunately it hit the hinge of the garage door and scratched the paint on the edge of the door bit. Each time we just figured that one of us had hit the button of the "key" accidently.

Then today I was driving it and the tailgate opened as I accelerated away from a traffic light. I noticed the wind/road noise and slowed down until I could get off the road and away from the heavy traffic to close it again. I do not recall hearing or seeing any warnings that it had opened when it happened but my attention was more on getting out of traffic where I could close it again so perhaps there were the warnings.

I had discussed the opening with the Service Advisor at our dealer and he recommened a new leather key case for the "Key" that covers the buttons such that they should not be succeptable to accidental opening. You can see the case here: http://raccoglitorebmw.altervista.org/istruzioni/pdf2/PIDoc58981130112.pdf

This will show the variety of accent colors it is available in but you will have to search for:

Accessori Original BMW Astuccio portachiavi Lines and click translate to be able to read the description..... Unless you can read the original!

But my concern is that the cover will only prevent or reduce the accidental pressing of the button when the key is in my pocket or my wife's purse. I am very concerned about the tailgate opening during driving if we might have our dogs with us or something fall out the back and be damaged or perhaps cause an accident.
 

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My tailgate stopped opening randomly when I moved the key from my pants pocket to my coat pocket. Now that warmer weather is here, and I don't wear a coat every day, I remove the key from my pocket as soon as I get home.
 

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this morning i parked my x3 outside my office, opened the tailgate to get my briefcase, and pressed the close-and-lock button. i walked away without watching, but noted the beep signalling the doors were locked before i entered the building. when i went outside after work, the tailgate was wide open. this is the second time this has happened.

i had my comfort access key in my pocket as i always have.
 

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this morning i parked my x3 outside my office, opened the tailgate to get my briefcase, and pressed the close-and-lock button. i walked away without watching, but noted the beep signalling the doors were locked before i entered the building. when i went outside after work, the tailgate was wide open. this is the second time this has happened.

i had my comfort access key in my pocket as i always have.
Sounds to me like it is getting bumped in your pocket and causing it to open just like everyone else.
 

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this morning i parked my x3 outside my office, opened the tailgate to get my briefcase, and pressed the close-and-lock button. i walked away without watching, but noted the beep signalling the doors were locked before i entered the building. when i went outside after work, the tailgate was wide open. this is the second time this has happened.

i had my comfort access key in my pocket as i always have.
We have had issues with our X3. The dealer is replacing a faulty button that they believe was causing random behavior like comfort access opening the trunk and the lock/close button causing the pop back open thing. Another board had an SB for electronics issues. Hopefully, the dealer did not need to do a software update to our car (ie we'll take it home and it won't actually be fixt).

Our X3 is at the body on BMW's dime, right now. The trunk popped while in the garage and did not enjoy having the garage door opened. We are having to get a new garage door so keep an eye on things.
 

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My '12 X3 did the same thing. When you would unlock the car through the CAS or keyfob, the trunk would pop open. Very inconvenient.

Turned out the rear tailgate button was installed incorrectly from the factory and had to be placed. Works great now. They had to order the right parts in though.
 

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A few days after I got my X3 (2.8i 2011 with comfort access and electronic trunk) my wife asked me if I had left the trunk open, since, when she got to the car - which was parked in front of the house - it had the trunk wide open (I parked it there about an hour before).

Event though I knew I had not left it open, I didn't think much of it, and assumed that maybe I pressed the wrong button while closing it. After all, I only had it for a day or 2 so was still getting familiar with it.

Well, just the other day (about 2000 kms into it's life now), the trunk opened spontaneously WHILE driving (about 25mph). Now, I'm pretty sure this is not something that should be able to happen, regardless of which buttons you may or may not accidentally press - so there is definitely something wrong here.

Wondering if anyone else has experienced this issue - I could not find any mention of this on the forum yet.

Thanks!
Yes, I've had it happen several times just as you described it and once in the garage. Nothing to do with the car and everything to do with how you carry your key fob and what you have attached to it. This is the BMW equivalent to a pocket dial with a cell phone. When things get bunched up in a pocket or if you're female a purse, they can depress the trunk button when you move around and open the hatch. I now carry my fob in a separate pocket from my keys and my wife has a special place for hers in her purse where combs, keys brushes and the rest of the hardware she carries can not set it off. I haven't had a problem since.
 

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After my first (and only) experience with an unintended fob button push several years ago I immediately purchased fob covers ... Went with original BMW items though there are cheaper knock offs on line. Trust me ... Had them for my e60 from 2007 and now for our e84 & F10. When my '17 X5 arrives the fob covers for it will be in hand!
 
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