Red SRS light on dash is flashing after battery change

[Rich in Boston]

I hadn't started the 8 in 3 weeks and it wouldn't start even with a jump. The batteries were two year old Bosch 91's from Pep Boys. I took them in for a free replacement and Pep Boys told me only one was dead. They charged up the "good" one and gave me a new battery. The 8 started right up but that little SRS light flashes on the dash. What gives?

[Rich in Boston]

No they did not. But I tried charging the battery on the driver's side that way. Could that really be the cause?

[gary8]

You may have damaged the SRS module which is located above the cover in the passenger side foot well, under the glove box. Because you have an early car, try this: http://www.bimmerforums.com/forum/sh...-Special-Tools

[clubE31]

happens (had the same, dead batteries..... reset with DIS, probably nothing wrong)

[Rich in Boston]

You may have damaged the SRS module which is located above the cover in the passenger side foot well, under the glove box. Because you have an early car, try this: http://www.bimmerforums.com/forum/sh...-Special-Tools

gary8, I printed the instructions, but how do I know which is pin #15 in the diagnostic connector?

[gary8]

gary8, I printed the instructions, but how do I know which is pin #15 in the diagnostic connector?

If you look closely, the pin numbers are stamped. Search BMW 20-pin connector for diagrams. Here's one: http://www.one-stop-electronics.com/...nnector_25.jpg

Let us know if this works.

[Rich in Boston]

I tried the jumper procedure three times and it did not work.

[Cup1d]

Rich in Boston, did you ever figure this out?

[kiwiCSi]

No one mentioned it in this thread, but replacing just one battery is not recommended for these cars.
I believe the golden rule is to always install two new batteries, which will help reduce the risk of damage to electronic components.