Hi ive recently bought an 03 a4 when i bought it the air bag light remained constantly on because the old seats were taking out and replaced wit new leather ones the new ones didnt hav air bags in them so my problem is the light remains on because i cannot reconnect the sensor ive being down to my local mechanic
and he says its impossible to take the light off or remove the blub or fuse that lights it up because it would immoblise car ???? its nothing major but having just spent 22k euro on a car its somthing i could do without any1 with any ideas about this Thanx in advance
Firstly, you need to hook it up to a fault code reader, and clear all stored fault codes. The airbag/SRS warning light will never "self clear", so unless you do clear the codes, the light will remain.
If that doesn't clear the fault, then you will need to find someone with VAG-COM, and re-code the relevent ECU so that it does not look for the seat side airbags.
Failing that, refit the old seats.
When the airbag light is illuminated, NONE of the airbags, nor belt pretensioners, nor load limiters will work. I don't know what the law is like in Ireland, but in the UK, the airbag light is MoT testable. In Ireland, the Garda may prosecute you if stopped, and if you have a prang with defective airbags, your insurance will probably be void too!
Sean - Independent Motor Vehicle Technician (retired)
'07 Audi B7 RS4 quattro saloon (8EC) 4.2 FSI V8 32v (BNS) (with CSiC Audi ceramic brakes) - WOW
'06/7 VW A5 Golf Mk5 GTI 5dr 2.0T FSI (BWA) DSG, fully loaded, colour coded,
'98/9 Honda CBR600FX, the blueberry trifle
'03 Audi B6 S4 quattro saloon (8E) 4.2 V8 40v (BBK) 6sp manual, fully loaded (gone, but not forgotten)
Last edited by Teutonic_Tamer; 03-19-2007 at 08:09 AM.
Air bag light can't be recoded what you have to do is trick the computer in to thinking it’s connected. To do that you need a 4ohm resister bridged across the plug then have someone with VAGCOM clear all codes.
I have done this to my 2000 A4 and see no reason why you can't do it.
04 Audi A4 B6 1.8TQ S-Line 190bhp 6 Speed Duel SMIC
Milltek Exhaust|VMR boost Gauge|SP51 K04-15 Outlaw (K04-23+)|Samco Sport DV|034 Sport CAT (15bhp over stock)|TT MAF| 380 inj| Autobahn88 TIP| To be fitted: B7 RS4 F-Brakes|B5 RS4 R-Brakes|SB Stage4 Clutch|
Putting this in for the archive. I have a 2001 Audi TT Roadster, 101,000 miles. Airbag light came on shortly after purchased (bought used in 2010 with 94,000) intermittently. Would sometimes come on at start, then cut off after car had run for a few minutes, mostly on longer road trips 20 or more miles.
Then about 2 months into ownership the alternator/battery light came on, replaced alternator with new. Mechanic (who I trust) said the voltage regulator was fried and had been for some time, probably from the car lot jumping it off after a dead battery.
Like magic after about 15 starts with the new alternator, airbag light went off and stayed off for about 8 months. No problems at all. Just a regular startup where the light comes on for about 3 seconds at start to do a self check, then turns off.
Then about 2 months ago (Dec. 2010) I noticed that on startup, my starter was a little slower, weaker than normal and the startup took just a tad longer, kinda like the battery was starting to get weak and go bad. Though nothing of it. Well, wouldn't you know it, the airbag light came back on after a week or so of that weak starting.
So, bought a scanner and tried to clear the code but it kept coming right back (code 17931). Checked cables, connections, and everything. Dealer told me my airbags had "gone bad" and i needed to replace them but i didn't believe that. I kept putting it off but finally checked the battery and, sure enough, battery was bad, only making like 12.4 volts.
So, replaced battery yesterday (Feb. 2011). And, again like magic, the airbag light has turned back off, all by itself after about 10 starts with the new battery in. No code clearing or anything it just cut off like normal.
Needless to say, this airbag light thing might be affected by the voltage in the system, not enough/too much voltage, airbag cuts off because it sees it as high resistance or not enough resistance in the airbag. Just my experience, might help somebody else, check the alternator and/or replace it and the battery.
from Birmingham, Alabama.
Last edited by matlock339; 02-28-2011 at 02:27 PM.
I'm in similar position- 03 a4 avant with aftermarket seats and permanent airbag light. The 4 ohm resistor sounds like a good way to get rid of the light. Amazed at how many different resistor types there are. Can someone advise exactly what wattage of resistor I need?
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