HELP!!! I CAN'T OPEN MY CAR'S TRUNK W/ A DISCONNEC
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From: SoCal
My Ride: 08 535i, A/T & Paddle Shifters, AW, NB Leather, Sport, Premium, Nav, 6FL
Originally Posted by EBMCS03' post='817374' date='Mar 15 2009, 11:39 AM
Ya thats what I thought too but I dont have one to try either... 
Maybe someone can try...
I cant imagine it being to difficult to get into the trunk w/out battery...
Maybe someone can try...I cant imagine it being to difficult to get into the trunk w/out battery...
anyone else?
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From: NY
My Ride: 2008 Silverstone II E60 M5 2012 E70 AW X5 50i Sport w/ LCI Aero Kit and Rocker Panels
Originally Posted by jcool10181' post='817547' date='Mar 15 2009, 06:13 PM
anyone else?
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From: Portland, Oregon, USA
My Ride: 2006 550i, 1984 Mercedes Gelandewagen
Originally Posted by jcool10181' post='817547' date='Mar 15 2009, 03:13 PM
anyone else?
One option is to apply power to the jump point under the hood and then issue the trunk unlock command on the k-can (body can-bus) to tell the trunk module to open.
The other option is to get under the passenger side of the car, locate connectors X13253 and X13252 and remove them from the Basic Body Module.
Apply power to pin 3 of X13253 (which should activate the trunk release motor)(It should be a black wire with a yellow stripe).
To get to the Basic Body Module you'll have to remove the panel in the foot well behind the glove box (as you look up from the floor). It looks like a royal PITA.
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From: Boston, MA
My Ride: 2008 535i 6MT
Originally Posted by jcool10181' post='817547' date='Mar 15 2009, 06:13 PM
anyone else?
Something like this could work: http://www.batteryjunction.com/wagan-2045.html
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From: Vancouver, Canada
Originally Posted by ObD' post='817887' date='Mar 15 2009, 09:45 PM
Something like this could work: http://www.batteryjunction.com/wagan-2045.html
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From: Portland, Oregon, USA
My Ride: 2006 550i, 1984 Mercedes Gelandewagen
Originally Posted by Westcoast M5' post='817923' date='Mar 15 2009, 10:37 PM
If the battery is disconnected you no amount of jumping or charging will work - the circuit is open. Taking out the back seat is about a ten minute job, easy to do.
The 'jump start terminal', G6430, is tied directly to X13769 (positive terminal) on G1 (the battery). As long as X6402 is not disconnected (negative from the battery to the chassis), then applying power to G6430 will act just like a battery.
If X6404 was disconnected from G1, then there is NO open circuit and the 'jump start terminal' will work just fine...
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From: Vancouver, Canada
Originally Posted by or_550i' post='817987' date='Mar 16 2009, 12:21 AM
Humm... You've said this before but I think you are mistaken.
The 'jump start terminal', G6430, is tied directly to X13769 (positive terminal) on G1 (the battery). As long as X6402 is not disconnected (negative from the battery to the chassis), then applying power to G6430 will act just like a battery.
If X6404 was disconnected from G1, then there is NO open circuit and the 'jump start terminal' will work just fine...
The 'jump start terminal', G6430, is tied directly to X13769 (positive terminal) on G1 (the battery). As long as X6402 is not disconnected (negative from the battery to the chassis), then applying power to G6430 will act just like a battery.
If X6404 was disconnected from G1, then there is NO open circuit and the 'jump start terminal' will work just fine...
You may be right, I'm not an electrical engineer but still recommend he just pull the back seat - simple job and he'll be up an running in no time.