Trunk popped open this morning, why?

chris82 · 02-11-2015, 03:24 PM

Quote:

Originally Posted by TX135i

My trunk has done this about 3 times in the last 5-6 months. And at first I thought I accidentally hit the button but I don't think so.

Yea I didn't hit my button either, it just popped open lol

Overpar56 · 02-11-2015, 05:04 PM

Quote:

Originally Posted by chris82

Yea I didn't hit my button either, it just popped open lol

Zombies.

cbl117 · 02-27-2015, 01:53 PM

Quote:

Originally Posted by Bigiggs

Guess it doesn't snow much where you live.....oh wait, shit, damn you!

I haven't driven in snow in 10 years so I forgot about the grime it leaves.

Bigiggs · 02-28-2015, 07:54 AM

Quote:

Originally Posted by cbl117

Quote:

Originally Posted by Bigiggs

Guess it doesn't snow much where you live.....oh wait, shit, damn you!

I haven't driven in snow in 10 years so I forgot about the grime it leaves.

Its all good buddy. I was trying to make a lame joke, because in reality (work permitting) I would love to live where you currently reside.

twinboost_MD · 03-01-2015, 02:50 AM

It could randomly happen if your key needs to be charged and a low voltage situation takes place. Do you have keyless entry?

chris82 · 03-01-2015, 01:04 PM

Quote:

Originally Posted by twinboost93

It could randomly happen if your key needs to be charged and a low voltage situation takes place. Do you have keyless entry?

Nope

edisapimp · 03-01-2015, 02:44 PM

ghosts for sure.

chris82 · 03-01-2015, 06:37 PM

Quote:

Originally Posted by edisapimp

ghosts for sure.

I hope they don't do anything else to my car

chris82 · 03-18-2015, 03:08 PM

Well, believe it or not, the trunk light came on again last night. I got out and checked it and sure enough it was open, even though the trunk lid wasn't raised at all. What is going on!

Esteban · 03-18-2015, 04:41 PM

Car gremlins... or maybe spiders.

KNS · 04-17-2015, 11:03 AM

My trunk lid on my 128i did this yesterday morning. Got in the car to back out of the garage and the trunk was indicating "open" on the dash. Closed the trunk lid and then I had a right front "low tire pressure" warning. However, tire pressure completely normal....

Got to love all the tech they cram in these cars.

chris82 · 04-17-2015, 12:05 PM

Quote:

Originally Posted by KNS

My trunk lid on my 128i did this yesterday morning. Got in the car to back out of the garage and the trunk was indicating "open" on the dash. Closed the trunk lid and then I had a right front "low tire pressure" warning. However, tire pressure completely normal....

Got to love all the tech they cram in these cars.

Yup, it's a blessing and a curse. I love the over engineering of the BMWs

feeshta · 04-21-2015, 11:36 AM

I am thinking there may be some long term issue with BMW trunk releases going on here. My 2000 540i has a habit of doing this as well, probably about 2-3 days per month. It's always in the morning that it happens, and I am quite sure it is not from accidentally hitting the trunk release button after becoming hyper aware of it.

Personally I am thinking there might be a grounding issue starting to surface. Most switches and relays in the automotive environment rely on ground pulse actuation to function. Basically, when you hit the switch it momentarily connects the desired device to electrical ground in order to complete a circuit. If one of the vehicles connections to ground is getting corroded and losing continuity, it can cause all sorts of strange issues like this. I would take a look around the trunk and see if you can find any ground connections. If you do, take it apart and clean it the hardware, as well as the body where it connects. It may not look corroded, but sometimes corrosion can be a very fine film. A dremmel tool with a wire wheel works great for this, or wire brushes. Putting a little dielectric grease on the connections will help prevent future corrosion as well. It's probably not a bad idea to check the connections at the battery etc while you are at it.

chris82 · 04-21-2015, 12:45 PM

Quote:

Originally Posted by feeshta

I am thinking there may be some long term issue with BMW trunk releases going on here. My 2000 540i has a habit of doing this as well, probably about 2-3 days per month. It's always in the morning that it happens, and I am quite sure it is not from accidentally hitting the trunk release button after becoming hyper aware of it.

Personally I am thinking there might be a grounding issue starting to surface. Most switches and relays in the automotive environment rely on ground pulse actuation to function. Basically, when you hit the switch it momentarily connects the desired device to electrical ground in order to complete a circuit. If one of the vehicles connections to ground is getting corroded and losing continuity, it can cause all sorts of strange issues like this. I would take a look around the trunk and see if you can find any ground connections. If you do, take it apart and clean it the hardware, as well as the body where it connects. It may not look corroded, but sometimes corrosion can be a very fine film. A dremmel tool with a wire wheel works great for this, or wire brushes. Putting a little dielectric grease on the connections will help prevent future corrosion as well. It's probably not a bad idea to check the connections at the battery etc while you are at it.

Interesting theory, could very well be. For me it only seemed to happen in the winter and colder weather. I can't remember it ever happening in summer/late spring/early fall

PA135i · 04-21-2015, 01:11 PM

Quote:

Originally Posted by Spoolin Montego

Most likely you pressed the open trunk button when trying to unlock the car...

Yup, what he said. Happens to me on occasion.

Not to worry unless you have a body in the trunk.

PA135i · 04-21-2015, 02:09 PM

Quote:

Originally Posted by chris82

Well, believe it or not, the trunk light came on again last night. I got out and checked it and sure enough it was open, even though the trunk lid wasn't raised at all. What is going on!

I would not hesitate and have a car exorcism. evil spirits at work here. I'm not gonna read this post anymore because it's giving me the willies..

Wakka · 04-21-2015, 02:27 PM

I had this happen to my car several times. My last service before my warranty was up i brought it up to my service adviser. He actually had them change out the entire locking mechanism in the trunk.

That was about 2 years ago... I have had it happen to me exactly once since then. So... kind of problem solved?

feeshta · 04-21-2015, 02:52 PM

Quote:

Originally Posted by chris82

Interesting theory, could very well be. For me it only seemed to happen in the winter and colder weather. I can't remember it ever happening in summer/late spring/early fall

It can't hurt to try it anyway, as long as you don't forget to reconnect everything.

Ground issues can be extremely difficult to pin down, and weather conditions can at times affect such a thing. Sometimes things are balanced just on the knife edge of whether they will work, or not, and any small variance in conditions that normally would seem completely irrelevant can affect the outcome.

I've seen much stranger things happen with bad grounds before.

chris82 · 04-21-2015, 03:10 PM

Quote:

Originally Posted by feeshta

It can't hurt to try it anyway, as long as you don't forget to reconnect everything.

Ground issues can be extremely difficult to pin down, and weather conditions can at times affect such a thing. Sometimes things are balanced just on the knife edge of whether they will work, or not, and any small variance in conditions that normally would seem completely irrelevant can affect the outcome.

I've seen much stranger things happen with bad grounds before.

I'm going to leave it be unless things get worse, hasn't happened in a few months, knock on wood!

03-01-2015, 02:50 AM	#27
twinboost_MD Private First Class 19 Rep 188 Posts Drives: AW 135i Join Date: Feb 2015 Location: Washington, DC iTrader: (0)	It could randomly happen if your key needs to be charged and a low voltage situation takes place. Do you have keyless entry? __________________ E46 M3 ---> AW 135i on Coral Red - JB4 w/MHD Backend - Alpina B3 - Koni Yellows - H&R Super Sport Springs - Powerflex Rear Upper Shock Mounts - ///M Strut Tower Bar
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03-01-2015, 02:44 PM	#29
edisapimp Civil Rights Activist 115 Rep 949 Posts Drives: E46 Sedan, E88 Vert Join Date: Apr 2013 Location: Long Island iTrader: (0)	ghosts for sure. __________________ E88 Crimson Red Vert MSport 6MT - Listing your mods in your signature is lame. BMS DCI/MHD E30 Flash!!/AA Sport FMIC/VRSF CP w Tial BOV/VRSF 3" DPs/550i clutch w SPEC SMFW/Apex EC-7s/Whiteline RSFB/E92 M3 FCAs/Bilstein B12 Pro Kit/VRSF inlets
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03-18-2015, 03:08 PM	#31
chris82 Brigadier General 827 Rep 3,856 Posts Drives: 128i Join Date: Aug 2012 Location: NY NY iTrader: (8) Garage List 2009 BMW 128i [9.80]	Well, believe it or not, the trunk light came on again last night. I got out and checked it and sure enough it was open, even though the trunk lid wasn't raised at all. What is going on!
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03-18-2015, 04:41 PM	#32
Esteban Major General 43592 Rep 7,224 Posts Drives: a slow car fast Join Date: Jun 2014 Location: SoCal iTrader: (0)	Car gremlins... or maybe spiders. __________________
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04-17-2015, 11:03 AM	#33
KNS Lieutenant 137 Rep 439 Posts Drives: 128i and Porsche Join Date: Dec 2014 Location: Arizona iTrader: (0)	My trunk lid on my 128i did this yesterday morning. Got in the car to back out of the garage and the trunk was indicating "open" on the dash. Closed the trunk lid and then I had a right front "low tire pressure" warning. However, tire pressure completely normal.... Got to love all the tech they cram in these cars.
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04-21-2015, 11:36 AM	#35
feeshta Second Lieutenant 58 Rep 244 Posts Drives: 2012 135i 6MT, Alpine White Join Date: Oct 2008 Location: Aberdeen MD iTrader: (0)	I am thinking there may be some long term issue with BMW trunk releases going on here. My 2000 540i has a habit of doing this as well, probably about 2-3 days per month. It's always in the morning that it happens, and I am quite sure it is not from accidentally hitting the trunk release button after becoming hyper aware of it. Personally I am thinking there might be a grounding issue starting to surface. Most switches and relays in the automotive environment rely on ground pulse actuation to function. Basically, when you hit the switch it momentarily connects the desired device to electrical ground in order to complete a circuit. If one of the vehicles connections to ground is getting corroded and losing continuity, it can cause all sorts of strange issues like this. I would take a look around the trunk and see if you can find any ground connections. If you do, take it apart and clean it the hardware, as well as the body where it connects. It may not look corroded, but sometimes corrosion can be a very fine film. A dremmel tool with a wire wheel works great for this, or wire brushes. Putting a little dielectric grease on the connections will help prevent future corrosion as well. It's probably not a bad idea to check the connections at the battery etc while you are at it.
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