My '02, Saab 9-3 is making me crazy. While driving- all failure lights come on and the speedometer goes to 0. Then several minutes later, all failure lights go off and the speedometer starts moving again. What is going on? This happens about 2-4 times a day. I'm scared to drive it anymore until I know what the problem is. Does anyone have a clue? I sure would appreciate any ideas.
Thanks.

jolie, September 2009

Hi all...
I've just found out, from The Saab Forum that this fault is most likely caused by the ABS sensor attached to the rear nearside (passenger side) wheel. There are sensors on all 4 wheels but this one controls the speedo.
Apparently it is integrated into the hub but you can try cleaning it and the toothed wheel, which might help.
Failing that, it's a new sensor

Colin, March 2010

Me too!!! Someone please help. Diagnostics at MOT showed "no fault" AARRGH

Colin, March 2010

It bugs the crap out of me to because mine is doing the exact same thing so if anyone knows how to fix this electrical cluster f**k much appreciated

Derrick, February 2010