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2013 Scion FR-S Steering Wheel Wandering ( Information Dense)

  

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(1) Car Information:

-Year/Trim: Scion FRS 2013 10 Series 

-Millage: 110,000

-Trans: Manual

-Location- Lower United Sates ( never in the north)

(2) Problem:

My steering wheel does not always point straight when driving straight. Straight position wanders with steering wheel 10 degrees clockwise after left hand turn and/or intense bump and/or elevation change in road. Creates hazard. I pucker the poop shoot every time turning left at speed. I describe the issue as feels like the car is tripping over itself.     

What is going on Scotty!!?!?!?!?

 

(3) Problem Origination:

Ran over rubber wheel choc with front RH/Passenger side wheel. Swerved left , hit it, then ran off road. Insurance covered initial body work in late 2021 into 2022. ( New bumper, side rail bondo)

 

(4) Symptoms (since wreck, some days are worse, some days very minor):

-Increased bump steer

- Floaty suspension

- When steering wheel angle locks clockwise, small to large jerk back to center as steering wheel returns to 0 degrees. This typically causes ABS to turn on. I reduce speed. 

-when steering wheel angle locks clockwise, I can jerk steering wheel to return to center, hit bump to return to center, or wait to be jerked back. If road is even, I can drive over a mile with steering wheel positioned/locked 10 degrees clockwise.  (At times when jerking steering wheel back to center ABS engages. At times I feel like I can hear a small grinding sound as I jerk the wheel, which may still be ABS but no ABS light.)  

-Pinball effect, when issue happens at speed (typically on uneven and/or change in elevation chicanes on freeway) , jerk back to center starts left to right death wobble. Feels like controlling a floating bull as the gauge cluster lights up like a Christmas tree.

-Long left hand freeway ramps if taken at speed starts ABS on left hand wheel. NO ISSUE when turning right at speed. 

-When ABS engages. Light does not always go off unless intense ABS. When car is put in Trac Off, ABS still engages with Issue. No change in symptoms.  

-Problem intensifies over uneven roads or large change in elevation  

-Increased speed on even roads with less than ~10 degree steering wheel angle variation left or right , NO ISSUE 

-Increased inside tire wear. Bald tires wander worse then full tread tires.

-(other)I know I probably need new bushings, front suspension sounds like bag of rocks when going over minor rough terrain at parking lot speeds.

(5) Work that has been done over 1 year period to try and fix: ( At first Service would not believe me and shrugged me off)

-Multiple Alignments by Dealer 

-ABS Diagnostic by Dealer  

-New steering rack assembly including inner an outer tie rods by Dealer (This hardened the steering and helped stop the pinball effect) 

-Steering angle recall by Dealer  

-Computer codes reset by dealer 

-New Brakes by me (Helped reduce ABS intervention at lower speeds) 

-New rotors by me

-Added Brake Fluid   

-New Tires (Current tires Micheline AS4, Previous Micheline AS3/+, will need 2 new tires soon from front end issue chewing them up)

-Reducing/increase tire pressure 

(6) Documentation 

https://sendvid.com/aal7x4p6

https://sendvid.com/weqiueyp

https://sendvid.com/burfjozh

https://sendvid.com/bxfv1083

I am at a loss here. I love my car. I have no clue what is happening. When I even attempt spirited driving, its not possible unless I speed through the ABS warning and loose half my steering ability. With the bump steer back to neutral wheel, I've almost had various new wrecks solo and with other cars. I have written this long format in the hopes all this information will lead to a solution. I also know dealership service is not the brightest, had 4 visits for the same cam plate oil leak when the car was under 30,000k miles and still under bumper to bumper.      


2 Answers
2

Realize once you had something all bets are off. Things can get bent that you can't adjust for with front and alignments. I would start by going to the best friend and alignment shop. You can find one that does rebuilds of racks and stuff and see what they say


1

Welcome new member. Tough one. 
Only hunch I have is the wheel bearing. Could cause erratic steering, noises, and ABS problems (the ABS sensor is mounted in the hub/bearing assembly). I believe your bearings are made by Subaru, which is known for weak bearings (but inexpensive to replace). Only thing is I would have expected a bearings problem to have been noticed by now. 
just a thought. 


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