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Old 04-20-2006, 01:33 PM   #1
330Ciiiiii
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Airbag lights are on. Ran it through computer. Help ?

Hey guys.

I'm a new user but long time fanatic. My friend suggested I come here to find my mods and seek help when needed. Well, unfortunately the first time is for help.

My airbag light came on last week and when my friend (he who suggested I try here) ran it through his computer two error codes came up.

MRS4 - 02 Belt tensioer driver --- Currently present --- Resistance too high
-Belt Tensioner, driver B6510 30010

and

MRS4 - 0B Battery, positive terminal isolation 1 --- Currently Present --- Resistance too high - Fault fr
-Battery safety terminal B6510_30008



Any ideas if these are the problems causing my airbag light to go on?? Any help would be greatly appreciated. Thanks!!

Tom

Last edited by 330Ciiiiii; 04-20-2006 at 01:46 PM.
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Old 04-20-2006, 01:40 PM   #2
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Your drivers side sealt belt tensor is out of wack it's telling you. The battery needs replacing? Go have them fixed/replaced.
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Old 04-20-2006, 01:46 PM   #3
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So my airbag light is on because my seat belt tensioner is out of wack? That's kind of extreme. What if I get into an accident without the seatbelt tensioners and an airbag!

Slightly poor designing =T

Oh, I swaped my 2001 Sport Steering for an Alcantra Wheel and airbag. But I don't think that has anything to do with it.
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Old 04-20-2006, 03:06 PM   #4
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Quote:
Originally Posted by 330Ciiiiii
Oh, I swaped my 2001 Sport Steering for an Alcantra Wheel and airbag. But I don't think that has anything to do with it.
Did you disconnect the battery before swapping?
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Old 04-20-2006, 04:30 PM   #5
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Sure did. Even resetted the airbag sensor.
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Old 04-20-2006, 05:22 PM   #6
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Belt tensioner is the safetly belt lock. When you brake hard it should lock you in. No idea what's with the battery positive terminal isolation thingy...
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Old 04-21-2006, 01:36 AM   #7
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Anyone know if the battery error has anything to do with the airbag?? =T
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Old 04-21-2006, 09:45 AM   #8
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Quote:
Originally Posted by 330Ciiiiii
Anyone know if the battery error has anything to do with the airbag?? =T
It could. The battery safety terminal(BST) blows off of your battery in the event of an accident, disconnecting power to avoid a fire I believe. So if you have a problem with your airbags, it could possibly affect the BST's behavior. Just a thought though, I'm not a technician.
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Old 04-21-2006, 10:22 AM   #9
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Quote:
Originally Posted by 330Ciiiiii
My airbag light came on last week and when my friend (he who suggested I try here) ran it through his computer two error codes came up.

MRS4 - 02 Belt tensioer driver --- Currently present --- Resistance too high
-Belt Tensioner, driver B6510 30010

Airbag light was on in my car, too. Took it to the dealer and they wanted ~$400 to fix it! They said they had to replace the seatbelt/buckle and that required removing the seat
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Old 04-23-2006, 12:13 AM   #10
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Originally Posted by sladha
Airbag light was on in my car, too. Took it to the dealer and they wanted ~$400 to fix it! They said they had to replace the seatbelt/buckle and that required removing the seat
Does that definitely fix the tensior warning issue? My car developed this tonight, and even when I use the Peake tool to reset it, it only stays reset for a few seconds before it lights up again.
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Old 04-23-2006, 01:53 AM   #11
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Originally Posted by camarochevy1970
Does that definitely fix the tensior warning issue? My car developed this tonight, and even when I use the Peake tool to reset it, it only stays reset for a few seconds before it lights up again.
not sure, I have yet to get it fixed. once i do, i'll let u know. i just don't want to pay the dealer ~$400!
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Old 04-27-2006, 01:03 AM   #12
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Quote:
Originally Posted by Steel330ci
It could. The battery safety terminal(BST) blows off of your battery in the event of an accident, disconnecting power to avoid a fire I believe. So if you have a problem with your airbags, it could possibly affect the BST's behavior. Just a thought though, I'm not a technician.
Yes. I agree.
Anybody knows how many ohms the airbag module does expect in the battery positive terminal?
I have the same problem, and I want to put a resistor between the wires to simulate a working battery safety terminal.
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Old 02-15-2007, 09:26 PM   #13
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Did you find out how many Ohm's it has to be?
I have the same thing and they want Australian $1200 to fit it!!!
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Old 02-16-2007, 12:59 AM   #14
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Originally Posted by sladha View Post
Airbag light was on in my car, too. Took it to the dealer and they wanted ~$400 to fix it! They said they had to replace the seatbelt/buckle and that required removing the seat
Those crooks! The seats are held down by a couple of bolts. Not difficult to remove...
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Old 02-16-2007, 07:27 AM   #15
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I rec taking a contact cleaner and cleaning the seat belt connector then applying a chemical called stabilant 22A and putting it in the contacts then clearing the codes, I have found many buckles that have been replaced that did not need to be that only had contact issues. I also have replaced many faulty buckles but always try that first. The BST you were referring to is the pyrotechnic device in the trunk by the battery if that cable is loose or has a voltage drop anywhere in the cable then it needs to be replaced. The one place I have sen issues in under the passenger seat carpet up by the bulkhead corrodes causing that faults sometime replacing the whole battery cable is necessary. I hope this helps Good Luck.
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Old 02-16-2007, 07:51 AM   #16
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I have the same problem, thought I was alone on this one. I replaced my steering wheel with an M3 one and followed the removal instructions, (disconnecting the battery), I got the light on after about 1 month. I am going to try to clean the seat belt connector. ANy ideas as t owhere to find the "Stabilant 22A"
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Old 02-16-2007, 08:05 AM   #17
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Most auto stores or stereo shops can get it for you it is expensive 20-40 for a 4 ounce bottle so use one or two drops!! BMW and VW/Audi Spec it to use in May bulletins for connection issues. This is the only product that I have had work successfully there are lots of contact enhancers out there this is the only one I have had work!!!
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Old 02-20-2007, 03:31 AM   #18
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My airbag light flicks on and off randomly, can't seem to narrow down what it is that triggers it, but can go on and off a few times in the course of a 20 minutes journey. What tool have you used to get the error codes out? yo usaid you ran it through a pc? what interface and software do you have? I have heard there are also sensors under the seats themselves, anyone know where these are and how to get access to them?
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Old 02-20-2007, 04:46 AM   #19
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Ok firstly Fix the battery problem because i have had my car throw a fault code for the seat belt tensioner exactly same code as yours when there was nothing wrong with it. The Occupancy Sensor on the passenger seat was to blame, While doing a little fault finding of my own I worked it out by simulating an occupancy sensor and clearing the codes the Tensioner Error disappeared as well so Thats why I say Fix the battery first.

Btw Seth you able to get me a Occupancy sensor for my Passenger seat (RHD) ?
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Old 02-20-2007, 07:40 AM   #20
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Ok firstly Fix the battery problem because i have had my car throw a fault code for the seat belt tensioner exactly same code as yours when there was nothing wrong with it. The Occupancy Sensor on the passenger seat was to blame, While doing a little fault finding of my own I worked it out by simulating an occupancy sensor and clearing the codes the Tensioner Error disappeared as well so Thats why I say Fix the battery first.

Btw Seth you able to get me a Occupancy sensor for my Passenger seat (RHD) ?

Sorry I don't sell part that i don't install on customers cars. Mabey one of the other sponsors can help you out?
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