Trunk opening by itself

bryan_G01 · 07-19-2017, 12:20 PM

Any of you experienced the trunk starting to open and close by itself?

I think my key fob battery may be dying and this is causing it.
It happened with one of my fobs a year ago, so i have been using my spare, now today this one starting doing it.

Anyone have any concrete evidence this is the cause? What is the procedure to change the batteries and where can you buy them?

Thanks!

Edit:
I found this:
https://www.youcanic.com/bmw/key-battery-replacement

we use the CR2450 battery FYI.

3.0L · 07-19-2017, 12:39 PM

Quote:

Originally Posted by bryan_f22

Any of you experienced the trunk starting to open and close by itself?

Uh, open AND close?

I've had the tail gate on my SUV open "by itself" a couple of times. The cause was something in my pocket bumping the button on the keyfob.

bryan_G01 · 07-19-2017, 12:59 PM

its not because its in my pocket hitting a button.

I changed batteries in both remotes now and its still happening.

It's like someone is constantly pressing the button to open the trunk.

The Ching · 07-19-2017, 01:05 PM

Quote:

Originally Posted by bryan_f22

its not because its in my pocket hitting a button.

I changed batteries in both remotes now and its still happening.

It's like someone is constantly pressing the button to open the trunk.

poltergeists...

bryan_G01 · 07-19-2017, 01:06 PM

what ever it is, it sucks... seems to be happening to a lot of cars from searching other forums.

BEM-S4 · 07-19-2017, 01:11 PM

My mother's 328 back in the day had a similar issue. Was related to the latch and somehow the whole thing got out of sync. So the car thought it was closed when the latch was open and vice versa. They had to replace something and do almost a system reset on the computer.

bryan_G01 · 07-19-2017, 01:12 PM

ok, so i changed batteries in both, and tried to use my OTHER key fob, and it doesnt have the problem anymore.

Maybe its the car telling you that the other key hasn't been used and is approaching the time to sync?
No idea, but fingers crossed problem is solved.

3.0L · 07-19-2017, 02:16 PM

Quote:

Originally Posted by bryan_f22

ok, so i changed batteries in both, and tried to use my OTHER key fob, and it doesnt have the problem anymore.

Maybe its the car telling you that the other key hasn't been used and is approaching the time to sync?
No idea, but fingers crossed problem is solved.

I read somewhere that key-fobs, like cats, can get lonely and demand attention.

pikcachu · 07-19-2017, 11:37 PM

Quote:

Originally Posted by bryan_f22

Any of you experienced the trunk starting to open and close by itself?

I think my key fob battery may be dying and this is causing it.
It happened with one of my fobs a year ago, so i have been using my spare, now today this one starting doing it.

Anyone have any concrete evidence this is the cause? What is the procedure to change the batteries and where can you buy them?

Thanks!

Edit:
I found this:
https://www.youcanic.com/bmw/key-battery-replacement

we use the CR2450 battery FYI.

The car actually displayed a message saying the battery on the wife's FOB was low a few months ago, probably it got squeezed on her purse for hours sending signals

cause she usually doesn't drive the car

got 4 for $5 http://www.ebay.com/itm/4-NEW-PANASO...item56440e746f

you just follow the steps just like in the video

jmwilson125 · 07-20-2017, 05:53 AM

Quote:

Originally Posted by bryan_f22

its not because its in my pocket hitting a button.

I changed batteries in both remotes now and its still happening.

It's like someone is constantly pressing the button to open the trunk.

Do you have anything in the trunk? Maybe it's telling you to weight reduce.

I have had mine open a couple times, but I doesn't sound like the same issue. I'm sure mine are just from hitting it in my pocket. Kinda converting when I start the car and see the little warning triangle on the dash. Then I look at the other screen and it's just "trunk open" haha

bryan_G01 · 07-20-2017, 09:46 AM

If it happens to you, change batteries and switch remotes. Seems to have solved the issue.

Maynard · 07-20-2017, 12:42 PM

Quote:

Originally Posted by 3.0L

Uh, open AND close?

If so, I think this needs to be moved here:
http://www.2addicts.com/forums/showthread.php?t=1401302

crabu2 · 07-20-2017, 12:57 PM

This happened to me about 2 weeks ago. I was sitting in traffic and I got a message saying my trunk was open.. I looked back and it looked fine.. then all the sudden the message disappeared with me doing nothing. Then driving down the road, it did the same thing to me again.. I pulled over and checked.. even though it wasn't showing it was open, it was.. AFAIK, it hasn't happened since.

Luftwaffe1O1 · 07-20-2017, 07:24 PM

I have only had it happen when it was in my pocket. And that's because my wallet was pressing up against the key.

remolacha · 07-22-2017, 08:58 AM

I had such aproblem some years ago, really it helped, just to change battery) Good luck)

amw896 · 07-22-2017, 09:02 AM

i got quoted $22 for one of these batteries at the dealer! They are like $4 at wal mart lol

raleedy · 08-02-2017, 07:24 PM

Quote:

Originally Posted by amw896

i got quoted $22 for one of these batteries at the dealer! They are like $4 at wal mart lol

More like $.50 each on Amazon, I think.

07-19-2017, 12:20 PM	#1
bryan_G01 Lieutenant Colonel 1165 Rep 1,931 Posts Drives: like i stole it... Join Date: Jun 2012 Location: NY iTrader: (0)	Trunk opening by itself Any of you experienced the trunk starting to open and close by itself? I think my key fob battery may be dying and this is causing it. It happened with one of my fobs a year ago, so i have been using my spare, now today this one starting doing it. Anyone have any concrete evidence this is the cause? What is the procedure to change the batteries and where can you buy them? Thanks! Edit: I found this: https://www.youcanic.com/bmw/key-battery-replacement we use the CR2450 battery FYI. __________________ www.nybmwcca.org Current Cars: 1995 M3 Coupe Manual Alpine White 1997 M3 Sedan Auto Cosmo Black Metallic 2018 x3 m40 Auto Grey Metallic
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07-19-2017, 12:59 PM	#3
bryan_G01 Lieutenant Colonel 1165 Rep 1,931 Posts Drives: like i stole it... Join Date: Jun 2012 Location: NY iTrader: (0)	its not because its in my pocket hitting a button. I changed batteries in both remotes now and its still happening. It's like someone is constantly pressing the button to open the trunk. __________________ www.nybmwcca.org Current Cars: 1995 M3 Coupe Manual Alpine White 1997 M3 Sedan Auto Cosmo Black Metallic 2018 x3 m40 Auto Grey Metallic
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07-19-2017, 01:06 PM	#5
bryan_G01 Lieutenant Colonel 1165 Rep 1,931 Posts Drives: like i stole it... Join Date: Jun 2012 Location: NY iTrader: (0)	what ever it is, it sucks... seems to be happening to a lot of cars from searching other forums. __________________ www.nybmwcca.org Current Cars: 1995 M3 Coupe Manual Alpine White 1997 M3 Sedan Auto Cosmo Black Metallic 2018 x3 m40 Auto Grey Metallic
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07-19-2017, 01:11 PM	#6
BEM-S4 Major General 4516 Rep 8,942 Posts Drives: Dinan M235, Dinan Sport Wagon Join Date: Oct 2012 Location: Philadelphia iTrader: (5)	My mother's 328 back in the day had a similar issue. Was related to the latch and somehow the whole thing got out of sync. So the car thought it was closed when the latch was open and vice versa. They had to replace something and do almost a system reset on the computer. __________________ 2022 Macan S 2016 F31 328i xDrive Sport Wagon 2006 E46 330ci ZHP Convertible
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07-19-2017, 01:12 PM	#7
bryan_G01 Lieutenant Colonel 1165 Rep 1,931 Posts Drives: like i stole it... Join Date: Jun 2012 Location: NY iTrader: (0)	ok, so i changed batteries in both, and tried to use my OTHER key fob, and it doesnt have the problem anymore. Maybe its the car telling you that the other key hasn't been used and is approaching the time to sync? No idea, but fingers crossed problem is solved. __________________ www.nybmwcca.org Current Cars: 1995 M3 Coupe Manual Alpine White 1997 M3 Sedan Auto Cosmo Black Metallic 2018 x3 m40 Auto Grey Metallic
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07-20-2017, 09:46 AM	#11
bryan_G01 Lieutenant Colonel 1165 Rep 1,931 Posts Drives: like i stole it... Join Date: Jun 2012 Location: NY iTrader: (0)	If it happens to you, change batteries and switch remotes. Seems to have solved the issue. __________________ www.nybmwcca.org Current Cars: 1995 M3 Coupe Manual Alpine White 1997 M3 Sedan Auto Cosmo Black Metallic 2018 x3 m40 Auto Grey Metallic
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07-20-2017, 12:57 PM	#13
crabu2 Captain 142 Rep 671 Posts Drives: Truck and ... Join Date: Feb 2017 Location: Maryland iTrader: (0)	This happened to me about 2 weeks ago. I was sitting in traffic and I got a message saying my trunk was open.. I looked back and it looked fine.. then all the sudden the message disappeared with me doing nothing. Then driving down the road, it did the same thing to me again.. I pulled over and checked.. even though it wasn't showing it was open, it was.. AFAIK, it hasn't happened since. __________________ '20 240ix convertible
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07-20-2017, 07:24 PM	#14
Luftwaffe1O1 Lieutenant 230 Rep 555 Posts Drives: M235i, 2000 Z3 Join Date: Mar 2015 Location: San Diego, CA iTrader: (0)	I have only had it happen when it was in my pocket. And that's because my wallet was pressing up against the key. __________________
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07-22-2017, 08:58 AM	#15
remolacha Registered 3 Rep 4 Posts Drives: BMWX5 Join Date: Jul 2017 Location: Canada iTrader: (0)	I had such aproblem some years ago, really it helped, just to change battery) Good luck)
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07-22-2017, 09:02 AM	#16
amw896 Major 583 Rep 1,117 Posts Drives: 2015 BMW M235i Join Date: Feb 2016 Location: ontario iTrader: (0) Garage List 2015 BMW M235i [10.00]	i got quoted $22 for one of these batteries at the dealer! They are like $4 at wal mart lol
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