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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 11-20-2012, 10:08 AM
c12hap c12hap is offline
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Location: Chippenham
 
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Mein Auto: BMW Z3
Air bag light on!!

Hello All,

I recently upgraded my BMW Z3 with leather seats. It was a right who ha with the wiring but finally sorted it - i think .....
However the air bag light has come on :-(
I disconnected the battery and checked all the sockets and wires but all is ok -

Is it just because its registered a fault on the computer - if i buy one if those resetting tools on the internet will it clear it ?

Any advice will be appreciated

Cheers

Tom
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  #2  
Old 11-20-2012, 10:59 AM
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Pinecone Pinecone is offline
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Location: Maryland
 
Join Date: Apr 2002
Posts: 10,480
Mein Auto: M Roadster/M3
Once it comes on, you have to reset it.

If the key gets turned on while any one of the connectors is apart, you get the light.
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'95 Alpine M3 LTW
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  #3  
Old 11-20-2012, 05:55 PM
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morrieschoice morrieschoice is offline
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Mein Auto: 2001 3.0 Z-3 ROADSTER
air bag light

Before you purchase a reset tool to turn off the a/bag light, why not go to an auto parts store like autozone or advance auto etc. to see if they will do it for FREE. Just a thought
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  #4  
Old 11-20-2012, 06:07 PM
Blacklane Blacklane is offline
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Mein Auto: 1998 Z3 Roadster
I suspect most shops are reluctant to reset an SRS light without knowing how a problem was corrected. It's worth asking, though.

On the other hand, there are BMW SRS reset tools for sale for about $30 US on Amazon and other sites. That's cheaper than most shop's minimum charge.
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  #5  
Old 11-21-2012, 04:51 AM
rudyrov rudyrov is offline
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Mein Auto: 1998 BMW Z3
My experience is that the SRS light wont reset if the problem persists. It will momentarily go out then come right back.
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  #6  
Old 11-21-2012, 05:46 AM
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Pinecone Pinecone is offline
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Exactly.

No harm in resetting it, every time you turn on power, the system self tests. If anything is wrong, the light comes back on.
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'95 Alpine M3 LTW
'00 Dakar M Roadster
'02 Topaz M3
Red/White SRF #4 (Chassis 561)
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  #7  
Old 11-22-2012, 05:31 AM
Ivanhoe1997 Ivanhoe1997 is offline
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Mein Auto: '97 Z3
I found this on ebay, got one coming. Will let you know if it works. ic

BMW Airbag Bypass Seat Occupancy Sensor Mat Emulator
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  #8  
Old 11-22-2012, 06:30 AM
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IgotBMW IgotBMW is offline
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Mein Auto: 1996 Z3 1.9L M44
Interesting. Let us know if it works.

Sent from my SPH-P100 using Bimmer App
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  #9  
Old 11-24-2012, 07:34 AM
Hornedfrog1969 Hornedfrog1969 is offline
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Location: Northwest Florida
 
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Mein Auto: 97 Z3 2.8
I ordered a code reader and airbag light reset tool on Amazon for ~$55 for both. I've been reseting everyone's air bag light and checking codes ever since. The reset tool is yellow and the code reader is red. I can't believe how many people are driving around with the airbag light on. They work great.
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  #10  
Old 11-24-2012, 08:18 AM
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IgotBMW IgotBMW is offline
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Do you have a pic or link to buy for the code reader?
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  #11  
Old 11-24-2012, 09:12 AM
Hornedfrog1969 Hornedfrog1969 is offline
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http://www.amazon.com/Autel-MaxiScan...ds=code+reader

http://www.amazon.com/B800-reset-Air...=pd_sbs_auto_6

Make sure you get the air bag tool with the adaptor for the engine bay port. The air bag light cannot be reset from the OBDII port inside the car. These come with directions and are really easy to use. They are very inexpensive, $60 total and I think you can get free shipping.

I've been using both for about eight months. I've reset codes for five different people and reset the air bag light for four others. No complaints. Good luck.
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  #12  
Old 11-24-2012, 09:14 AM
Hornedfrog1969 Hornedfrog1969 is offline
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This one is same model but cost less.

http://www.amazon.com/Airbag-Display...pd_sim_sbs_p_5
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Last edited by Hornedfrog1969; 11-24-2012 at 10:50 AM.
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  #13  
Old 11-25-2012, 06:08 AM
tobandals tobandals is offline
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Mein Auto: '01 330Ci // SP PP CWP
Quote:
Originally Posted by Ivanhoe1997 View Post
I found this on ebay, got one coming. Will let you know if it works. ic

BMW Airbag Bypass Seat Occupancy Sensor Mat Emulator
Could you keep us posted on how this works? My light is also on, and my mechanic told me it was from the codes from both seats - could that be correct? If the sensor is to determine that someone is sitting there, why would the drivers seat have one, there should always be someone sitting there.

Anyway, if this works for you I may try that also, rather than replacing the sensor mat.
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  #14  
Old 11-25-2012, 06:46 AM
Hornedfrog1969 Hornedfrog1969 is offline
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Mein Auto: 97 Z3 2.8
The tool will reset a light for a transient fault. If the light comes back on or never goes away there really is a problem with the air bag system it needs to be repaired. The reset tool will tell you what the faults are and give you the option to erase them. Good luck.
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  #15  
Old 01-30-2013, 10:41 AM
Trapper Trapper is offline
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Location: Sudbury
 
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Mein Auto: 2003 Z4 2.5 Titanium Silv
Hey Hornedfrog,

I am currently experiencing an airbag light problem. I took out my passenger seat to do a repair. Put the seat back in with no airbag light issues. A few days later I am hooking up a battery tender and I disconnected the battery for a split second. Now I have an airbag light. I bought the same B800 SRS tool you have. It gives me a code 38 "swinging voltage fault" which makes sense with me disconnecting the battery for a split second.

My issue is I can't reset the fault.

Can you provide me with the procedure you follow to reset the fault, maybe I am missing a step as the directions are kind of vague.
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  #16  
Old 01-30-2013, 12:07 PM
Hornedfrog1969 Hornedfrog1969 is offline
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Location: Northwest Florida
 
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Mein Auto: 97 Z3 2.8
Tapper,

Turn the ignition to the on position (without cranking the engine), Plug the device into the receptacle (under the hood) you will get "FA" on the display. Push the scroll button until it reads "CA", then hit "enter". Scroll back to "FA" and hit "enter" to see if the fault is still there. Turn the key to the off position and remove the devise. Start the car to make sure the light is out.
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  #17  
Old 02-01-2013, 05:49 AM
Ivanhoe1997 Ivanhoe1997 is offline
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Location: Clinton, MS
 
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Mein Auto: '97 Z3
light

I bought the little plug then the tool. It worked for me. The plug alone did not take the light out but once it was reset the light stays off. I just recovered my seats so I might have a light again but it should reset. ic
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  #18  
Old 02-01-2013, 03:46 PM
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Clearancediver Clearancediver is online now
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Posts: 157
Mein Auto: 2004 Z4
I had a similar problem with my 2004 3.0 which was identified by BMW as being caused by a dirty connector in the battery compartment in the trunk. The line resistance caused by the dirty connector caused the fault code and the resultant dash display light. For what ever reason the wiring harness has a connector in that area that interfaces with the airbags. The technician metered the wiring and identified a voltage as being out of parameters. He cleaned the connection and I haven't had a problem since. It may not be the cause of your problem but it does illustrate how a seemingly unconnected problem can cause error codes elsewhere.
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  #19  
Old 03-26-2013, 07:48 AM
dznguyen dznguyen is offline
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Location: Orange County, CA
 
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Mein Auto: 2003 Z4 2.5i
Hi,
I had 2003 Z4 2.5i with the Airbag displayed for sometimes. I had the independent shop to run diagnostic but no airbag code found. He ran aquick test and reset everything but the airbag light still displayed. Could you plaese tell me what is the precise way to fix this issue?
Regards,
Dzung Nguyen
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  #20  
Old 03-26-2013, 11:43 AM
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Clearancediver Clearancediver is online now
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Mein Auto: 2004 Z4
Which light remains lit? Is it in the dash cluster... or is it the light to the right of the stick shift on the centre console. That light remains lit to indicate the passenger airbags are disabled... If no passenger is sitting in the seat. The light goes out when a passenger sits in the seat. If it doesn't go out the passenger airbags have been disabled via the key disable/enable switch that is on the side of passenger dash that is accessible when the passenger door is opened. That had me confused initially when I bought the car last fall. It's designed so that you can disable the airbags when you have a child seat etc installed there...
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