Question about 1996 Volkswagen Golf
We have had a number of reports of Air Bag Warning Lights staying on permanently after scanning with VAG-COM versions prior to 402.3. The Air Bag Controller shows DTC number 65535, indicating an internal error which cannot be cleared.
This problem seems to be limited to airbag controllers with the part number 6Q0-909-605-A. There are a number of different "Index" or "color-code" variations of this controller and not all of them are affected, but we haven't got a definitive list of which ones are which. If you have a 2000-2001 Golf, Jetta/Bora, Beetle, or a similar SEAT or Skoda model, you should physically inspect the airbag controller and look at the part number. If it is not 6Q0-909-605-A, then it should be safe to scan. The part number is both the numbers as well as the letters. So, if it is 6Q0-909-605-F, then it should be safe to scan. If it is 6Q0-909-605-A, then it is at risk of this problem -- Please avoid scanning the airbag controller in these cars, unless you are prepared to buy a new one!
So, can you unintentionally connect to the Airbag controller? When you try to access the Airbag controller, you need to click on Airbags in the Select Control Module screen. Then, you are confronted with a disclaimer screen asking if you really want to proceed, the default answer is "No". We have no reports of people scanning their airbags by mistake with these safeguards in place. Also, please note the disclaimer on the Download Page. If you have a vehicle with the affected part number and are concerned, simply do not scan the airbag controller. Accessing the other control modules in the car should not affect the airbag controller in any way.
Comment: There is no way that scanning a controller should cause it to become dysfunctional in this manner, even if the scan-tool fouls up in some way. We believe there is a bug in the firmware in these controllers. We also believe VW knows this, but isn't admitting it. The affected controllers are no longer available as replacement parts, they have been superceded by a new part number -- 1C0-909-605-A which appears not to have this problem.
Here is the location of the airbag Controller in the Golf/GTI/Jetta (click for zoom):
Hope helps (remember rated this).
Posted on Jul 08, 2010
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Posted on Jan 02, 2017
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