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      11-01-2011, 11:22 AM   #1
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How to open trunk with no battery connected

Hey guys,

Anybody know how to open the trunk w/o battery connected, I disconnected the battery to install the Performance steering wheel, and accidentally closed the trunk any help ?

TIA
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      11-01-2011, 12:10 PM   #2
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Quote:
Originally Posted by Mike Lu View Post
Hey guys,

Anybody know how to open the trunk w/o battery connected, I disconnected the battery to install the Performance steering wheel, and accidentally closed the trunk any help ?

TIA
No idea, I would call the dealer for help. All I can say, sorry.
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      11-01-2011, 12:11 PM   #3
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Quote:
Originally Posted by Mike Lu View Post
Hey guys,

Anybody know how to open the trunk w/o battery connected, I disconnected the battery to install the Performance steering wheel, and accidentally closed the trunk any help ?

TIA
There is a keyhole on the trunk. It faced down and is near the indentation where the license plate is on the trunk lid.
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      11-01-2011, 12:14 PM   #4
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there's no keyhole on my trunk, but there's one on my friend's car, anyway, figured out what to do and the trunk's opened right now. THX
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      11-01-2011, 12:15 PM   #5
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How to open the trunk with no battery

2 options, ZK is correct about the keyhole hidden on the underside of the lip by the pad, or you can obtain power by hooking up a battery to the engine area where there is a specially marked + sign and negative to any grounded metal in the hood. Also note, the FOB has a hidden key that can be manipulated out of the FOB itself to use in the keyhole. Hope this helps
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      11-01-2011, 12:18 PM   #6
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Quote:
Originally Posted by Z K View Post
There is a keyhole on the trunk. It faced down and is near the indentation where the license plate is on the trunk lid.
I didn't think the newer ones had a keyhole for the trunk?

What I would do is open the "through-hole" in the middle of the back seat and see if I could reach the back seat releases. Then release the back seats and crawl in the trunk and use the emergency trunk release.

Otherwise, I would connect a 12V power source to the power socket or open the hood and connect it to the battery jumper points.
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      11-01-2011, 12:25 PM   #7
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Wait ... does this mean that the backseats of the M3 don't fold down? only the center part (for skis)? What about the E90, I'm sure it has fold down back seats.
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      11-01-2011, 12:26 PM   #8
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Quote:
Originally Posted by 6MT4me View Post
2 options, ZK is correct about the keyhole hidden on the underside of the lip by the pad, or you can obtain power by hooking up a battery to the engine area where there is a specially marked + sign and negative to any grounded metal in the hood. Also note, the FOB has a hidden key that can be manipulated out of the FOB itself to use in the keyhole. Hope this helps
I had the same thing happen to me when I was installing my JB3 on my 335. I had to roll my car out of the garage and connect my truck to the jump points in the engine bay to get power to the car so that I could get into the trunk. I felt like a complete dumbass.


Good luck.
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      11-01-2011, 12:29 PM   #9
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This is exactly what I did, and it works.

Quote:
Originally Posted by raiste View Post

What I would do is open the "through-hole" in the middle of the back seat and see if I could reach the back seat releases. Then release the back seats and crawl in the trunk and use the emergency trunk release.
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      11-01-2011, 12:37 PM   #10
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Quote:
Originally Posted by Mike Lu View Post
there's no keyhole on my trunk, but there's one on my friend's car, anyway, figured out what to do and the trunk's opened right now. THX
I'm glad someone else took the time to tell us how you did it

Thanks a bunch raiste you are the man ... good thinking
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      11-01-2011, 12:41 PM   #11
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Quote:
Originally Posted by Superfly_M3 View Post
Wait ... does this mean that the backseats of the M3 don't fold down? only the center part (for skis)? What about the E90, I'm sure it has fold down back seats.
It's an option you need to pay for
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      11-01-2011, 01:14 PM   #12
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Quote:
Originally Posted by Z K View Post
There is a keyhole on the trunk.
It's inoperable on M3s, so completely useless. That's why it was deleted on newer models. Almost broke the key trying to open it, only to learn it didn't work on any other '08 . It's not connected to anything.

And yes, best way to open it is #1 with a jump, or #2 with somebody crawling thru the ski-bag opening (if equipped). And yes, the seats fold down, but from inside the trunk. Good day.
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      11-01-2011, 01:31 PM   #13
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Originally Posted by elp_jc View Post
It's inoperable on M3s, so completely useless. That's why it was deleted on newer models. Almost broke the key trying to open it, only to learn it didn't work on any other '08 . It's not connected to anything.

And yes, best way to open it is #1 with a jump, or #2 with somebody crawling thru the ski-bag opening (if equipped). And yes, the seats fold down, but from inside the trunk. Good day.
One needs to have friends with very long arms it's du able ...
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      11-01-2011, 01:51 PM   #14
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Originally Posted by jonasaurus View Post
It's an option you need to pay for
Not for the E92 like the OP has - its standard, and there is no non-folding back seat option. But yes, for the E90 it is an option.

Quote:
Originally Posted by elp_jc View Post
It's inoperable on M3s, so completely useless. That's why it was deleted on newer models.
Really? I'm pretty sure people have used it. I'll check it out on my '08 e93.
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      11-01-2011, 02:05 PM   #15
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Quote:
Originally Posted by elp_jc View Post
It's inoperable on M3s, so completely useless. That's why it was deleted on newer models. Almost broke the key trying to open it, only to learn it didn't work on any other '08 . It's not connected to anything.

And yes, best way to open it is #1 with a jump, or #2 with somebody crawling thru the ski-bag opening (if equipped). And yes, the seats fold down, but from inside the trunk. Good day.
Hmm.. good to know... I never tried opening the trunk. Why would they have a keyhole that's hooked up to nothing? My back seat doesn't fold... guess I'm SOL if the battery dies.
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      11-01-2011, 02:35 PM   #16
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Can't you just reconnect the battery and hit the button?
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      11-01-2011, 02:38 PM   #17
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Quote:
Originally Posted by immiketoo View Post
Can't you just reconnect the battery and hit the button?
The battery is in the trunk, hence the issue.
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      11-01-2011, 02:41 PM   #18
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Quote:
Originally Posted by elp_jc View Post
It's inoperable on M3s, so completely useless. That's why it was deleted on newer models. Almost broke the key trying to open it, only to learn it didn't work on any other '08 . It's not connected to anything.
I had to try this with my old 335i. I had to turn the key with a wrench to open it... almost broke the key.
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      11-01-2011, 03:50 PM   #19
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Originally Posted by kyleb350 View Post
I had to try this with my old 335i. I had to turn the key with a wrench to open it... almost broke the key.
So the key works?
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      11-01-2011, 04:15 PM   #20
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Quote:
Originally Posted by Z K View Post
There is a keyhole on the trunk. It faced down and is near the indentation where the license plate is on the trunk lid.
Anything after 09 doesn't have a keyhole in the trunk. Cost cutting at it's finest.
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      11-01-2011, 07:45 PM   #21
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Quote:
Originally Posted by jimbethesda View Post
The battery is in the trunk, hence the issue.
Thank you, I am a MORON. Please excuse my stupidity. Jeezus.
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Thickness feels good to me and my hands aren't that big.
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      11-01-2011, 09:46 PM   #22
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My M5 has a cable that is under the back seat. Just lift up the lower part of the seat and pull the cable and that releases the trunk. Since the M5 has no trunk keyhole either. I would think the M3 would be similar since it has no keyhole either.
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