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#106213 - 20/07/2002 05:40 SAAB fault with ABS light
CrackersMcCheese
pooh-bah

Registered: 14/01/2002
Posts: 2489
Hi.

My dad's 1996 SAAB 900 had a flat battery - it was really sudden... worked fine at 6pm, then nothing at 9pm. When he tried to start the car the dash lights went crazy.

He got a new battery next day and car seems ok BUT the ABS warning light is on - possibly an electrical fault rather than an ABS fault. Any ideas on how to fix it?

The fuses are ok, battery is ok, contacts going to ABS have been cleaned. SAAB garage hooked it up to their computer - says all ok.


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#106214 - 20/07/2002 05:49 Re: SAAB fault with ABS light [Re: CrackersMcCheese]
thinfourth2
Pooh-Bah

Registered: 13/04/2001
Posts: 1742
Loc: The land of the pale blue peop...
is it charging is a question, is there being any charge being lost

Also is the abs actually working

only ideas i have is to try and reboot abs brain by maybe removing battery again

also did you jump start car as you might fried the brain
_________________________
P.Allison fixer of big engines Mk2+Mk2a signed by God / Hacked by the Lord Aberdeen Scotland

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#106215 - 20/07/2002 05:55 Re: SAAB fault with ABS light [Re: thinfourth2]
CrackersMcCheese
pooh-bah

Registered: 14/01/2002
Posts: 2489
Its a brand new battery - the old one refused to charge. The old one also seemed ok by all tests.

ABS is working ok, so it must be elecrtrical fault - maybe the ABS relay?

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#106216 - 20/07/2002 06:20 Re: SAAB fault with ABS light [Re: CrackersMcCheese]
tfabris
carpal tunnel

Registered: 20/12/1999
Posts: 31594
Loc: Seattle, WA
Sometimes the system warning lights are controlled by the onboard computer, and can only be reset by a dealer with an OBD-II device.

For instance, one thing that I often do when I get a new car is to unplug the sensor that's used to buzz at me if I don't buckle my seat belt. It's not that I go without a seatbelt (in fact, I wear my seat belt religiously), I just put it on AFTER I've started the engine and I hate being buzzed at when the car is starting.

However on my new car, after I did that, the "SRS" (airbag) light came on and would not go out. It turns out that the SRS system uses that same sensor (or at least the wiring connector harness that I unplugged) to make a determination about whether or not to trigger a given airbag in case of an accident. Silly if you ask me, there's gonna be a driver in the driver's seat, right?

Anyway, after I plugged the sensor back in and it was all back to factory spec, the SRS light still did not turn off. It required a trip to the dealership (and an explanation, during which they gave me a dirty look) in order to get them to flip the bit in the computer that turned off the light.
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Tony Fabris

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#106217 - 20/07/2002 18:30 Re: SAAB fault with ABS light [Re: tfabris]
muzza
Pooh-Bah

Registered: 21/07/1999
Posts: 1765
Loc: Brisbane, Queensland, Australi...
It irks me that they make these products where the only solution is to report to a dealership for a (usually expensive) maintenance check. How long will it be before there are on board diagnostics which you can actually understand.
_________________________
-- Murray I What part of 'no' don't you understand? Is it the 'N', or the 'Zero'?

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