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Sounds like the ABS ECU Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: The ((BRAKE)) and ((ABS)) lights came ON !!!, Larry, Wed, 8 Jun 2005 16:46:31 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I haven't seen it so much on the Saabs but the Volvos have exactly the same symptoms when the ABS ECU is bad.
They use a similar system from the same maker.
It is the speed signal from ABS ECU out to the rest of the network system that disappears and trigger fault codes saying that the speed sensor is bad.
The problem is so common on many car makes that use this brake system that now you can find rebuilders here and there that repair the ECU and put it back together better than it came from factory for a fraction of the cost of a new one.
Saab have taken the approach that the ABS ECU cannot be replaced as a seperate part and the whole hydraulic pupmp unit and ECU needs to be replaced even though you can physically remove the ABS ECU.
That brings the price tag way up for this repair and some people have instead taken the road and found a used ECU to install.
Now when more and more rebuilders pop up I think that is the way to go and I wouldn't be surprised if Saab comes out with a bulletin saying that they now offer an alternative to replacing the whole hydraulic unit.
Anders
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