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I parked the car for lunch and everything is fine. After lunch, I drive off and the steering wheel is no longer 'straight' when the car is traveling straight and the Traction control light is on.
I didn't hit anything so no reason the wheels would have become unaligned. Is the car drive by wire? The only thing I can think of is that a steering position sensor got confused.
The Traction Control works by selectively applying the brake to a wheel that it senses is turning too fast. So, you probably have a computer error that is sensing an inaccurately, and applying a brake that is causing the steering to pull.
Absolutely, A front low Pressure would cause both problems causing differential wheel diameters pulling steering to one side and causing a TC fault (buit this should show as a TPS warning) or alternativly a TC fault can cause one wheel braking that pulls the wheel.
if the ETC (Electronic Traction Control) light came on, then the ECU logged the error code. That code should tell you what's wrong... at least with the traction control...
As for the steering alignment, I really can't see it coming out of alignment on it's own all of a sudden.. maybe over a long period of time but not instantaneous like this.
Tire pressure had no issues and I crawled under the car and saw nothing obviously wrong. I also pulled OBD codes and nothing came up.
The steering wheel is about 45 deg (clockwise) off of "up" when the car tracks straight. Obviously something happened for the shift, but I have no idea idea how that happened... To the dealer on Monday.
what was the resolution ? I think I got the same issue today. Traction control light is on. The steering - is off by 5-10 deg or so one side of the other depending on the last turn I took. Else the car drives fine..
it happened to me and it happened that quickly as well. My car came out of alignment. All of a sudden it was off by 4-5 inches to the left. I was able to get it to my tire place before having to have it flat bedded and sure enough, it was the alignment. It was so far out that it drove the car's sensors nuts. It was crazy. Needless to say, i had him fix the alignment and tighten the hell out of it so it wouldn't happen again.
Any steering rack involvement potential as I had a bad steering rack? If so I would suspect if you go full lock to full lock you might get things to reset. Just a thought. If it was alignment and something got that loose, I would suspect you'd feel a sloppiness in steering on this otherwise precise car.
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