SRS codes

[Gallagher13]

I have the dreaded SRS light. This is a brand new occurence.

I used the Peake SRS tool and came up with 11 - Supply Voltage, 47 - Control unit fault, signal track M1, 48- Control unit fault, signal track M2.

Am I headed to the dealer for a $600+ fix?

Or do one of you ever-so-helpful BMW techies have a another way to resolve or diagnose this further?

BTW- thanks very much for the seat adjustment fixes (twisting). The instructions for clipping the cable sheath worked great and looks professional. I heated/removed, trimmed, reheated, re-attached, and I now have fully functional driver and passenger seats!!

Now, hopefully I can fix the SRS issue, with out the stealer involved!

[ladiesman217]

unplug the control unit permanently and say bye bye to the airbag???
that'll clear it up. :)

clearing faults is dealer only.

[HausBimmer]

OK, you just fixed the seat twist and now you have an SRS light - Hmm - did you turn on the ignition with the seat disconnected? Did you try a reset? Unlike outher BMW fault codes that typically reset after two correct readings - SRS stays on forvever until reset. If the Peake doesn't do a reset on your model - go to the Software site on this forum and see if someone near you has CARSOFT.

[Gallagher13]

I have the reset with the Peake tool. SRS stays on.

When the seats were disconnected, the ignition was not turned on.

Could this be a battery issue?

[HausBimmer]

My '89 535i had broken leads on the two crash sensors (orange) on the inner front fenders (under the hood) - repairing these leads fixed my problem. On my '89, the SRS computer sits up under the dash near the steering wheel. There is a modular plug that has the leads on it - I'd test the power lead to see if the message is correct and the control unit is down and has no power - you can check the other leads at the same time.

[jessejames]

the SRS light is on in my 540 and the local indy said it was some control unit that needed replacing, gave me a business card to a bmw scrap yard in NH...
shouldn't be a big deal, but worth pursuing on your own without consulting the dealership.

[Russellc]

My srs light stays on for about 2 minutes and then goes off. Should go off in a few seconds. My indy says the air bags will still work if the light soes off. Any opinions on this?

[HausBimmer]

When mine was bad it flashed for a cuple of minutes and then went solid red - did your indy read codes? I would check codes before I assummed that the airbag would work in a crash.

[Russellc]

not yet, plan to take it in in a week or so. per previous jobs, he thought it was a seat belt sensor.

[HausBimmer]

If you have passenger airbags, there is also a pressure sensor in the pass. seat that can fail. I probably have one or two from e39's (and maybe e34s?) - where are you in KY?

[Russellc]

Mine has the passenger airbag. I live in Lexington, Ky. Might be a good idea to replace the pressure sensor and see what happens. if cheap enough. :) How much do you want for an e34 sensor, if you have one? My car is a 95 525i build date 1/95.

[Russellc]

bump