Battery Safety Terminal Bypass
#22
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Join Date: Sep 2013
Location: Montreal
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My Ride: BMW 325xi
no all airbag problem only if diagnostic SFZ Satellite Vehicle Centre module display code 9AFF Resistance, firing circuit, safety battery terminal, too high only . because the firing bullet in the battery terminal go high resistance. so for cut course just bridge a resister 2 ohms or in parallel l with the circuits a 10 ohms if the original not explode yet
Thanks
#24
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Join Date: Jul 2014
Location: atlanta
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My Ride: x5
Hello, nice DIY! I have a question. I have a mini cooper and it has a bad bst. Do I run this resistor to the little harness that is connected to the BST that is covered in yellow plastic at the top?
#26
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Location: Montreal
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My Ride: BMW 325xi
#27
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Join Date: Aug 2014
Location: UK
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My Ride: BMW 530i
I had exactly the same problem and it failed the MOT (I'm in the UK) because the airbag light was on. I followed this guide but could only buy either 1 ohm or 2.7 ohm resistors (from Maplins) so i bought 2 x 1 ohm resistors and wired them together in series - took me 10 mins and its all sorted... I know this is an old thread but thank you , thank you, thank you!!!!
Cheers
Barry
Cheers
Barry
Hi Barry,
I have a similar problem & not able to get through. I stay in Watford (in UK), Could you be able to help me with this.
#28
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Join Date: Aug 2014
Location: UK
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My Ride: BMW 530i
Hi, how you folks doing, Im new to this site and to the BMW world, just a week ago I bought a 2005 BMW 545i and when I got it, she was running like a champ. Then out of the blue she decided to give me an airbag light. To say the least, I was pissed and was wondering what caused it. My brother works at a Chevy stealership and he has a scan tool for BMWs, so we hooked it up and the error code was 9aff. After some searching on the internet and figuring out what it was, I found the Z3 deleting BST thread on bimmerfest.com. I used that as a guild and made my own DIY mod. I would like to share the bypass or delete of the BST if you would like to save yourself money and the hassel of the stealership. This works, no airbag light for me anymore. All that is needed is a 2 ohm resistor and a soldering iron. Just cut the two black wire and place the resistor inline of the BST. Next tuck the wires away neatly and have the computer cleared of the airbag light and it should be good to go.
Hi Mate,
I am not able to view the pictures not sure of the issue. Can you please share these pics to my id mbprash@gmail.com
Cheers
Prashanth
#29
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Join Date: Jun 2013
Location: orset
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My Ride: 535d
Hi, how you folks doing, Im new to this site and to the BMW world, just a week ago I bought a 2005 BMW 545i and when I got it, she was running like a champ. Then out of the blue she decided to give me an airbag light. To say the least, I was pissed and was wondering what caused it. My brother works at a Chevy stealership and he has a scan tool for BMWs, so we hooked it up and the error code was 9aff. After some searching on the internet and figuring out what it was, I found the Z3 deleting BST thread on bimmerfest.com. I used that as a guild and made my own DIY mod. I would like to share the bypass or delete of the BST if you would like to save yourself money and the hassel of the stealership. This works, no airbag light for me anymore. All that is needed is a 2 ohm resistor and a soldering iron. Just cut the two black wire and place the resistor inline of the BST. Next tuck the wires away neatly and have the computer cleared of the airbag light and it should be good to go.