BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > DIY Guides/ Discussions
EXXEL Distributions
Post Reply
Thread Tools Search this Thread
      06-04-2019, 10:49 AM   #1
New Member

Drives: BMW M3
Join Date: Jun 2019
Location: United Kingdom

iTrader: (0)

Battery disconnected. Boot locked.

Hello guys.
Have had my M3 E93 for 4 days. Today I attempted to change the battery.
I dc'd the original battery and it started raining so I closed the boot and went in...
That's when I realised there's no key hole to open the boot. *

Tried 'jumping' the car via the engine bay but that would have been too easy. Didn't work.

Found an article on locating a certain cable under the glove box and powering it to pop the boot.

1. Open the panel under the glove box. Two screws either side.
Remove the light bulb cable, lock unit, and another cable. (No idea what it does).

2. Locate the bunch of wires BEHIND the control unit. The wires contain a thick brown cable.
Within this bunch of cables locate a green/grey wire. It's the only one there.

3. I couldn't remove the clip, so I decided to splice the cable.

4. Get your battery. Use a cable from the negative terminal and squeeze it into the earth cable of the light bulb adaptor you removed earlier. If you can't squeeze it in, splice the cable and attach it.

5. From the positive terminal of the battery connect a cable and touch it to the spliced GREEN/GREY cable from 2 and 3.

6. The boot will now open.

7. Remove cables from the battery as soon as you've opened the boot.

Make sure not to kill yourselves. Or the car.
Attached Images
Appreciate 0
      06-04-2019, 12:37 PM   #2
Second Lieutenant
randrews15's Avatar

Drives: 2012 E93 M3 Le Mans Blue
Join Date: Nov 2012
Location: Parrish, FL

iTrader: (1)

This is why you have a garage for doing car repairs.
Appreciate 0
Post Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -5. The time now is 05:28 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.,,,,,,,,, logo and trademark are properties of BIMMERPOST