Check airbag? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 01-04-2004, 11:43 PM
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-1998 318TI
A few days agomy check airbag light came on. Its kinda weird as to how it happened because My dad and I were getting in the car (it had warmed up for 10 minute already) and as soon as my dads ass hits the seat (ive already sat down), this light comes on on my display. I tried turning the car on and off a few times, but it still stayed on. Its been on now for 3 days and counting...

Is there any DIY way to see whats wrong? I know its kinda risky working on airbags, cause u dont want it accidentally blowing up or anything. Is it something I should take to a dealer? I would prefer no dealer involvement (see topic "Damages to loaner car"), do you think that another bmw specialty place should be able to take care of it?
What about cost, how much do you guesstimate it could be, depending on the problem, like how much if just the sensor is fucky, or how much if there really is somethng wrong?

Thanks a lot for everything guys

Off topic...but YAY i finally get my clear corners and sidemarkers tomorrow
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#2 (permalink) Old 01-05-2004, 07:02 PM
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yea u can do to things one get a peake research reset tool at peakeresearch.com and it will tell u whats wrong and reset it, or hook ur self up with a friend that works at a repair center so u can get it reset for free. it is a common problem in the e36's for those to be set off by the seat-belts because either the tensioner or pulley. its prob has nothin to do with the airbags tho. but that tool is only 50 bucks. and it is good for life and not only resets them but it reads them to so u know what is up.
hope that i was a help.
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#3 (permalink) Old 01-07-2004, 04:28 AM
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wait guyz. sometimes resetting doesnt do it. try rsetting it and see if it comes back. It hapened to me 2 weeks ago, but apparently the BOSCH repair service center did reset some other stuff but couldnt reset the airbag thingy cuz hetold me my computer is a genuine BMW not a BOSCH one, and now i have to go pay like 30bucks just to try to check it at a BMW specialist...
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#4 (permalink) Old 01-07-2004, 08:35 AM
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its your seatbelt sensor.

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#5 (permalink) Old 01-07-2004, 11:58 AM
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Quote:
Originally posted by Furious@Jan 7 2004, 09:15 AM
its your seatbelt sensor.
What do you mean? Do you mean seatbelt sensor as in where somebody sits down and doesnt put on their belt, the light coms on? My moms lexus has that, but I know my car doesnt cause ive had plenty of people sit down and the light never came on.

OR do you mean seatbelt sensor as in that there is something wrong with the seat belts? Please explain
Thanks
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#6 (permalink) Old 01-07-2004, 04:56 PM
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Furious meant that the seatbelt sensor might have a problem. cuz the security system interconnects both seatbelt, airbag, and detectors in ur bumper and front wheel axis (i think)
the problem might also be from the very own airbag sensor or control unit (my unit is under the rear seat)
am having the same problem am checkin it soon i'll let u know
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#7 (permalink) Old 01-08-2004, 12:06 PM
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It also could be the seat sensor, I have that problem. If is the seat sensor I found an article that describes how to by pass that sensor without any risk.
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#8 (permalink) Old 01-09-2004, 01:20 AM
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Quote:
Originally posted by Raditz@Jan 8 2004, 12:46 PM
It also could be the seat sensor, I have that problem. If is the seat sensor I found an article that describes how to by pass that sensor without any risk.
Any way you could send me that article?
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#9 (permalink) Old 01-09-2004, 02:43 AM
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Quote:
Originally posted by brosnan6+Jan 9 2004, 02:00 AM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (brosnan6 @ Jan 9 2004, 02:00 AM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-Raditz@Jan 8 2004, 12:46 PM
It also could be the seat sensor, I have that problem. If is the seat sensor I found an article that describes how to by pass that sensor without any risk.
Any way you could send me that article? [/b][/quote]
Look at the bottom of the article or read it all, It's interesting

http://www.apexcone.com/JimPowellHomepage/...os/Recaros.html
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#10 (permalink) Old 01-10-2004, 01:48 AM
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Quote:
Originally posted by brosnan6@Jan 5 2004, 12:23 AM
-1998 318TI
A few days agomy check airbag light came on. Its kinda weird as to how it happened because My dad and I were getting in the car (it had warmed up for 10 minute already) and as soon as my dads ass hits the seat (ive already sat down), this light comes on on my display. I tried turning the car on and off a few times, but it still stayed on. Its been on now for 3 days and counting...

Is there any DIY way to see whats wrong? I know its kinda risky working on airbags, cause u dont want it accidentally blowing up or anything. Is it something I should take to a dealer? I would prefer no dealer involvement (see topic "Damages to loaner car"), do you think that another bmw specialty place should be able to take care of it?
What about cost, how much do you guesstimate it could be, depending on the problem, like how much if just the sensor is fucky, or how much if there really is somethng wrong?

Thanks a lot for everything guys

Off topic...but YAY i finally get my clear corners and sidemarkers tomorrow
[FONT=Geneva][COLOR=purple] B)
Hello there ! I'm new in this forum...just got my 96 BMW 318 TI
a week ago and love driving it. It's just that my airbay light is on
and needed to bring it back to my dealer so they can repair it.

There is a crack (not that bad) on the front bumper and i'm
thinkin' that might be the caused of the airbag light being on.
My friend had told me to bring it to a BMW dealer so they can
reset it...i'll bring my car tomorrow to my car dealer and see
what they can do about it.

Any advise would help! thanks !

<span style='font-family:Geneva'><span style='colorurple'>[FONT=Optima]iF you have IT, flaunt it </span></span>
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#11 (permalink) Old 01-13-2004, 03:14 AM
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Question: how many sensors are there in a 2 drs coupe ? and where ?
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#12 (permalink) Old 01-15-2004, 12:07 PM
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hey all
i went to the service center. They reset the airbag thingy and it worked for a while then back to on, then they re-checked it and now its fine its not on and its not giving them errors. Now theytold me if it happened again i should go to a BMW service center cuz it wuz a BOSCH center, some software wasnt compatible
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#13 (permalink) Old 01-15-2004, 11:05 PM
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TISK TISK, messing with the airbag system. Be aware of what things are and what they do before you modify anything.

Being that the fault occured when the passenger sat down, I'd say it's most likely the seat occupancy sensor in that seat. There is a sensor mat, or wire grid, that is under the cushion, or the seat skin where you sit. This let's the airbag control unit know that the seat is occupied. So, if you get in accident, the control unit will know if it needs to activate that airbag or not. No sense popping a bag for Casper.
I wouldn't recommend bypassing it. If so, I'd want it to think there was someone in that seat all the time.......

It could very well be a seatbelt buckle switch/tensioner fault as well. There is a switch in each seatbelt buckle to indicate that the belt is latched, and the control unit also monitors the resistance of the tensioner circuit for the buckle. In the event of a crash, the pirotechnic belt tensioner pops off, and tightens the seatbelt, to hold you in your seat.

Those are the 2 most common problems. It's pointless trying to fix these systems if you can't pull the codes.
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#14 (permalink) Old 01-17-2004, 01:23 PM
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Question

History: A month ago BMW shop did dash work to fix a heater problem. After dash work, airbag light staying on for ~ 2 minutes after start-up (should only be on for 6 seconds). No passenger necessary.

BMW shop diagnosed as needing new seatbelt latch. Replaced seatbelt latch and airbag light acted normal for the last month.

Current: Just had 60k servicing. Again airbag light staying on for ~ 2 minutes after start-up. No passenger necessary.

Argh ... any ideas or suggestions? Thank you in advance
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#15 (permalink) Old 01-17-2004, 11:14 PM
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Argh ... any ideas or suggestions? Thank you in advance


**********

Try the other seatbelt buckle. :P
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