hermann_walter23

Prius ABS Traction Issues

Hi, I'm having a strange issue with my 2008 Toyota Prius hybrid. The ABS lamp lights up, and I'm experiencing some traction problems. It feels like the ABS system is failing. I've scanned for error codes, but nothing obvious is showing up related to wheel speed sensors. Mileage is around 173757 km. Any ideas where to start looking? Could a defective ECM cause such a problem?

A 2008 Toyota Prius is experiencing issues with the ABS lamp lighting up and traction problems, suggesting a potential failure in the ABS system. Despite scanning for error codes, no issues related to wheel speed sensors were found. The problem may be linked to a defective ABS control unit or faulty connections to it. It is recommended to have the ABS control unit checked, possibly requiring professional workshop assistance to resolve the issue.

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4 comment(s)

I had something similar happen in my Prius. ABS and traction control going haywire. Did you check the input signals to the ABS control unit itself? Sometimes a faulty connection there can cause these symptoms.

Thanks for the quick reply! I haven't checked the input signals directly at the ABS control unit. Is that something I can test with a multimeter, or do I need some specialized diagnostic equipment?

You can try with a multimeter but honestly, based on my experience, it's likely the control unit itself. I tried fiddling with it, but ended up taking it to a workshop. Saved me a lot of headache.

Thanks, that's really helpful. I was hoping to avoid the workshop, but it sounds like that's the best course of action. Estimate I received from the workshop is around 1000€ since they believe the ABS control unit is defective. I will post the resolution later!

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TOYOTA

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PRIUS