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Thread: Hendrik - Flickering ACS light Reply to Thread
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Topic Review (Newest First)
05-01-2019 03:17 PM
DrewP That'll do it too! Or if it's backed part way out and not seeing the trigger wheel consistently, or corrodey connectors. Thanks for throwing that out there, it could definitely be that. Usually the module just blongs the light on and it stays on.
04-29-2019 08:12 PM
srp Not sure if its relevant, but I use to get the same thing in my NG900. One of the front wheel sensors was caked in metal shavings. After I cleaned it, the light hasn't come back on. Could have just been a coincidence.
04-26-2019 09:27 AM
DrewP Do you mean the ABS light? Make sure the brake fluid level isn't low, if it's not the low fluid warning lamp it is likely the control module for the anti-lock-brakes starting to go bad, which is very common. There are places online to get rebuilt ones, or you can try swapping in a used one if you can find one locally. It's the black unit on top of the ABS block with 4 torx head screws and it pops right off.

If you are handy with electronics you can try to pop the top cover off (and by pop I mean you have to pry the everliving shit out of it to get it off) and re-flow the solder joints where the electrical contacts are soldered to the circuit board. I believe all the rebuilders do when they repair them is to re-flow the failing solder joint to one of the ground pins. The power and ground leads are the larger contacts, all the other little small ones are the signal leads.
04-25-2019 04:52 AM
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Hendrik - Flickering ACS light

I am the new owner of a NG900 ( 1997/8 Saab 900SE 2.0 Turbo) with the following problem. On the dashboard the "Check ACS, keeps on flickering. The red triangle stays on but luckily the car goes with no problems. I would like to get the flickering light fault find. I tried what I know electronically but nothing. Please help someone with more knowledge on Saab's than I have. I am from South Africa so help here is almost non existent.

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