Service AdvanceTrac issues

[JoeMustang]

So for a few weeks I've been having the Service AdvanceTrac issue, where my abs, traction control lights are on, power steering out at low speeds but also my rear park assist goes out to.

First thing I did was check and clean all the Abs sensors, and check for damage. Next checked hub assemblies for wear. Front right had some play so I replaced it, issue immediately returned.

I've also checked any fuses that might cause problems and the connecter under airbox.

So I bought a scan tool that checks abs codes hoping to narrow it down but it's not picking up any errors. I've read on here that the rear thrust washers can be a problem but wouldn't the scan tool pick up on which wheel is acting up? Should I still pull the rear hubs to check the washers or is there something else I should check? The rear park assist is weird to me, I haven't seen that problem before.

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[WItoTX]

You probably already did this, but have you checked the dyno plug?

 

[az89gt]

I just went through this with mine - It started out of the blue, and got worse by the day. I took the car in and it was a bad hub in the rear that had allowed enough play to damage the ABS sensor. I had both hubs replaced (and the damaged ABS sensor) while it was there, and the problem is gone.

Pretty disappointing given the car only has 30k miles on it...

 

[MiamiGT350]

Hopefully it's not the rear hub...

My car throws various codes related to ABS and power steering, incline assist, etc when the the intake is not plugged in. That would be my suspicion, and/or check the battery voltage is sufficient when starting the car.

You may want to go over your various connectors with QD Electronic Spray, which is safe for plastic. You also might want to check the airbox wiring for any crimps or breakage.

A good once over of the battery connections and the battery itself are also recommended.

If the car is not rough idling and you only have the symptoms you mentioned, I'd lean more towards damaged ABS sensors, etc.

 

[Zrussian13]

I had same issues and it was the drivers rear wheel bearing. After I replaced it I had to drive around for about 3 days before everything would reset and go back to normal. It wasn't an instant fix.

 

[Goterr0r]

Rear wheel bearing here as well. It wasn't terrible, but enough to cause havoc on the system. I had about 30,000 miles on the car when it happened.

 

[JoeMustang]

But correct me if I'm wrong, the scan tool would tell me which abs is picking up the bad wheel bearing?

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