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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > How to open trunk manually when battery is disconnected?



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      10-29-2011, 12:19 PM   #1
jjurroz
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How to open trunk manually when battery is disconnected?

Dumb question but the n55 is not like the n54, there is no keyhole on the trunk door. I looked at the owners manual and no luck. Anyone know the secret?


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      10-29-2011, 04:40 PM   #2
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I had the same problem. I had to go through the ski access and make a hook on the end of a broom stick to pull the glow-in-the-dark emergency latch in the trunk... 135i here.
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      10-29-2011, 04:46 PM   #3
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Is there a slot to put the key underneath where you grab it.
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      10-29-2011, 11:41 PM   #4
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No ski access for me, and no keyhole either
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      10-31-2011, 12:55 AM   #5
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My N55 has keyhole it's a e90 though, But yeah otherwise use the ski access

EDIT: Just checked and WTF No keyhole, I must of have been thinking of my 08 E90.

Last edited by N55; 11-02-2011 at 01:22 AM.
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      10-31-2011, 02:38 AM   #6
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Quote:
Originally Posted by jjurroz View Post
No ski access for me, and no keyhole either
You have to make damn well sure that you do not disconnect the battery and then close the trunk. There will be no way to open the trunk again without a whole lot of hassle, because the trunk is electronically controlled.

Two members did that... one ended up having a technician drive to his car (which was at the port), and then send a short electrical spark to one of the wires inside the glove box to simulate the trunk opening button. The other member unbolted his rear seats to access the trunk.
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      10-31-2011, 08:44 AM   #7
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Quote:
Originally Posted by N55 View Post
My N55 has keyhole it's a e90 though, But yeah otherwise use the ski access
the coupes don't have a keyhold such a poor design.
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      10-31-2011, 08:45 AM   #8
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To be honest with you, I didn't think it would be an issue, considering, I have never seen a car without a keyhole in the trunk for manual access. WTF was bmw thinking??

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You have to make damn well sure that you do not disconnect the battery and then close the trunk. There will be no way to open the trunk again without a whole lot of hassle, because the trunk is electronically controlled.

Two members did that... one ended up having a technician drive to his car (which was at the port), and then send a short electrical spark to one of the wires inside the glove box to simulate the trunk opening button. The other member unbolted his rear seats to access the trunk.
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      10-31-2011, 09:04 AM   #9
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Lmao! Put a booster pack on the terminals in the engine bay!!!
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      10-31-2011, 09:06 AM   #10
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I'm just picturing you guys crawling through the trunk with a mechanic scratching his head!!! Lol
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      10-31-2011, 09:57 AM   #11
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Quote:
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My N55 has keyhole it's a e90 though, But yeah otherwise use the ski access
You've actually seen it and used it? I have an '11 E90 328 loaner today which DOES NOT have a keyhole in the trunk (I know where they hide it, I had an '07 that had a trunk keyhole). And there's no mention of it in the manual that is in the car. Consider yourself lucky
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Last edited by wrickem; 10-31-2011 at 10:23 AM.
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      10-31-2011, 10:20 AM   #12
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if you only disconnected negative terminal, you can put jump cable front of the car to start up electronic modules.
Otherwise, I think you have to have bmw dealer to fix it for you.
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      10-31-2011, 04:16 PM   #13
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Quote:
Originally Posted by philsteroni View Post
Lmao! Put a booster pack on the terminals in the engine bay!!!
Quote:
Originally Posted by parky1215 View Post
if you only disconnected negative terminal, you can put jump cable front of the car to start up electronic modules.
Otherwise, I think you have to have bmw dealer to fix it for you.
Does not work! In my previous post where two members closed the trunk with the battery disconnected, they tried that battery boost method and it did nothing.
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      10-31-2011, 04:23 PM   #14
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I did this, and there have been a few posts on it besides mine too. If the battery is disconnected DO NOT CLOSE THE TRUNK (should be a sticky haha). The only way to fix it is to have your car connected to another running car via battery cables and then pop the trunk via fob or button. Really a terrible call by BMW engineers.
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      10-31-2011, 05:14 PM   #15
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Quote:
Originally Posted by samchoi604 View Post
Does not work! In my previous post where two members closed the trunk with the battery disconnected, they tried that battery boost method and it did nothing.
That's weird. I made same mistake, and jump starting method on my car worked for me for opening the trunk.
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      10-31-2011, 08:26 PM   #16
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Jose -
like parky said.
find another car or if u have an extra battery -
with jumper cables, front of the bimmer, under the hood.
attach the cable, red neg terminal.

and hit ur keyfob-
pop goes the trunk.
add a towel and cover the rear lock.
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      10-31-2011, 10:36 PM   #17
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Lmao! This happened to me when installing my CSL Trunk! We left the key in the trunk, plus the battery was disconnected!
So we were SOL!!!
But luckily we were able to get a piece of wire, bend it and pull the latch that folds down the back seats and get access again!

Funny shit!
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      10-31-2011, 10:46 PM   #18
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Quote:
Originally Posted by SRT14PimPin07 View Post
Lmao! This happened to me when installing my CSL Trunk! We left the key in the trunk, plus the battery was disconnected!
So we were SOL!!!
But luckily we were able to get a piece of wire, bend it and pull the latch that folds down the back seats and get access again!

Funny shit!
side question, what CSL trunk you got? i'm on the market to look for one
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      11-01-2011, 08:55 AM   #19
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oops, sorry for no updates. I ended up using jumper cables. You don't even need to turn on the donar car as it gives it just enough juice to quickly popup the trunk open. Took less than 2 secs
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      11-01-2011, 05:03 PM   #20
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side question, what CSL trunk you got? i'm on the market to look for one
I got the CSL one made by **********s, 1 sided 2X2 carbon. It takes very little modification to make it all work.
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      12-15-2012, 06:20 AM   #21
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coathanger

to access the manual release in our 2007 bmw 328xi, i folded down the centre, rear piece of the seat and used a coathanger to pull the manual release. i must say though the manual release and battery set up are rather sadistic
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      12-15-2012, 06:22 AM   #22
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p.s.

it's the glowing triangle, at the back, centre
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