Jump to content
View in the app

A better way to browse. Learn more.
Bimmer Owners Club - BMW Forum for BMW Owners

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

BST cable wiring diagram e93

Iqb043
in BMW 3 Series Forum

Featured Replies

Hi, I have a e93 and when I was removing the battery I cut through the positive battery cable side of the BST cable. I can replace the wire myself but I am not sure which way round the wires go became they are both black wires in colour. The BST connector is labelled with the numbers 1 and 2 on the positive battery cable side of the BST connector and the other side of the connector which connects to the car is
labelled 1,2,3,4,5,6 but that side of the wire didn't break. The wire connects to terminal 1 and 2 on the drive side of the bst connector. So I am unsure is the wire from 1 connect to 1 and 2 connects to 2 or visa versa on the positive battery side of the bst connector. I wiring diagram would be extremely helpful if any one can help

IMG_20220423_173646.jpg

  • Quote

    Morning Mo

    Welcome to the Forum

    That looks like the MRS cable so getting something wrong could fire Seat belt tensioners or Air bags or it could be the IBS trigger lead

    My instinct here is change the cable to avoid issues you will probably have the airbag lights to reset as its been disconnected. Do you have access to INPA/ISTA you may find wiring diagrams there.

    Check realoem if you haven't already to see if you can get part numbers that may help 

    I have changed the complete main battery lead on a 1 series where the IBS had been triggered and fired the tensioners but fortunately no airbags so didn't need diagrams just replce parts and reset with INPA

    Dave

  • Quote

    • Latest Deals

    BMW Official Store for genuine BMW parts & accessories

    Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via eBay links

    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.
    Note: Your post will require moderator approval before it will be visible.

    Guest
    Reply to this topic...
    https://www.bimmerownersclub.com/forums/topic/19212-bst-cable-wiring-diagram-e93/
    Go to topic listing
    eBay disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase you make on eBay via the club.

    DISCLAIMER: Bimmerownersclub.com is an independent BMW car forum for owners of BMW vehicles. The club is not part of BMW nor affiliated with or endorsed by the offical BMW AG in any way. The material contained in the forums is submitted by the general public, and is not endorsed by Bimmer Owners Club, BMW AG, or Bayerische Motoren Werke AG. The official website for BMW AG can be found at http://www.bmw.co.uk
    Background Picker
    Customize Layout

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.