Error messages after alignment

[10_second_sammy]

Had this issue when I got coilovers installed.

Months before, I had an ebay steering wheel installed. It was off centered just a bit so I had an alignment done to center it.

Then I got my KW DDC coilovers installed, steering wheel was straight, everything was good then 15 miles later those warnings came on. Went back a week later at the same shop for my alignment appointment and they said they didn't have the specs or capability to reset my steering angle sensor on their Hunter rack. At the time it was a new 2023 MT, so they didn't have the update for it yet. Went to another alignment shop and they said the same thing.

The old manual method for BMWs where you turn your wheel to full lock side to side to calibrate the SAS doesn't work on Supras. Using the OBD2 readers and what not also could not reset the steering angle sensor either. Didn't wanna take it into the dealer since I had a few mods and I knew I'd have to pay a lot for it.

I did some research and downloaded Toyota Techstream Lite, paid for a 2 day sub which was like $70, it got me access to Toyota ISTA. I used ISTA to set my steering angle sensor as well as my parking sensor and all of the warnings went away and my sensors were working again. Not sure if I needed to calibrate the parking sensors but I did it anyway.

My theory is because my steering wheel was off centered originally and with the new coilovers and alignment settings, the steering wheel sensor and the on board lane camera were out of sync, which caused my parking and side sensors to go out of whack and disable themselves. I could totally be wrong of course. I think spending more time on the alignment settings would have fixed it eventually, but that would have cost more money than the Techstream sub. Haven't had an issue since then and this was late 2023.

Bingo on the nail and this is most of which what I wanted to do... I risked it with the dealership and they tried to charge me 3 hours for the SAS reset.... I stood my ground and just paid the $250 diagnostic thankfully and sent the bill to my tire alignment shop to see what they say. Last thing needed is to reset my car alarm by clicking unlock and lock on the keyfob a few times. All my codes are gone... I can finally enjoy the car again, at a cost of $450 out of pocket for one wheel alignment... Moral of the story, got to a shop that has all the gear you need or just take it into Toyota... they were $180 for an alignment vs $200 for the shop I went to... so bs as these cars come way out of wack alignment out of the factory

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