DIY: Unlocking A BMW E32 & E34 When The Battery Is Dead

How to unlock a BMW e32 (7 series) or e34 (5 series) when the battery is dead. This was done on the passenger side door lock.

Category:

Autos & Vehicles

Tags:

• unlock
• lock
• BMW
• bimmer
• e32
• e34
• series
• 740
• 735
• 730
• 760
• 525
• 530
• 535
• 540
• battery
• dead
• died
• key
• door
• handle
• boost
• charge
• howto
• repair
• tips & tricks

[krt1ca]

I connected 12v car battery to trunk light... Other trunk light turned on but it seems there's no enough power to unlock... I have waited 1 day and then alarm started working but still no unlock... second day was the same... it wont unlock :(((

[4DIYers]

@krt1ca Hmm, that's odd. I know others that have used this method and have been able to open the vehicle. There is suppose to be a way that you can pop your hood using a coat hanger, and if I remember right, you'll have to pull on the cable to pop the latch. I believe you can get to the cable through the kidney grill.

[krt1ca]

I tried this... Key goes there but nothing happens...the pin doesn't pop... i don't know what to do this is horrible...

[4DIYers]

@krt1ca Did you try both sides? Possible the handle mechanism is worn out so this procedure won't work. If you can gain access to your trunk, then put a 12v power supply to the trunk light which will power up your car to unlock the doors.

[krt1ca]

@4DIYers i called one guy to open it... he put some gum pillow with pump between doors and pumped little air in that gum so door opens little bit, then he took some stick and pulled the door pin out... Problem solved:D

Now i connected wires to battery and pulled it through some hole to the trunk so if it happens again next time i can easy boost battery from the trunk :D

hope you understand what i wrote:P...

[krt1ca]

@4DIYers I tried both sides... its cold now maby thats problem... I can open trunk so ill put 12v to light...thanks alot !

[MrScort008]

Thank you so much, worked with the BMW 525I M package. My brother was tripping the hell out, until I saw this video. Thank you so very much for posting it. This is the second time I have used this site for help and I'm at 100%

[loksmith80]

london locksmith-07587578644

[bugsy791]

@mellevanlas hi,im a locksmith in Jamaica, sometimes turning the key while the handle is up requires more force so clamping on a vicegrip on the keyhead usuall works.

[mellevanlas]

@4DIYers ohhh ok I'll try the divers side and if that doesnt work I'll try with trunk light thanks man :) I really do appreciated. Thumbs up jejejeje :)