Your Experience with ECU Repair
If anyone is interested in an 04-06 LS430 we recently opened a dealership catered to them: https://taninjdm.com/for-sale/
TANIN AUTO ELECTRONIX
262-456-4147
contact@taninauto.com
www.taninautoelectronix.com
https://taninjdm.com/ Our Lexus LS430 Dealership

Last edited by TaninAuto; Sep 4, 2025 at 11:17 AM.
If you purchased a used ECU we also have the ability to write your VIN to the ECU to eliminate the P0630 VIN mismatch.
https://taninautoelectronix.com/prod...ough-shifting/
In looking back, I think people are so analytical about this repair, because it's the brains of the vehicle. I thought the same thing, what if it comes back and my vehicle is immobilized. What then? I expected no issues, but still, I was no different in anticipation the first time I twisted the key, and the first time I drove. It was as expected. For under $200, well worth it to have the car back and drivable again.
I've owned my car since 2016, so for whatever reason, the instant 2-3 upshift where it never wanted to stay in 2, seems to also be gone.
We are a supporting forum vendor, our pricing is similar, we do more on-board repair work than them, we do free software updating, they have terrible google reviews surrounding their ECU repair work and warranty claims, and our core business is all Lexus so we know the in's and out's of every Lexus electronic item.
Thanks for any input!
TANIN AUTO ELECTRONIX
262-456-4147
contact@taninauto.com
www.taninautoelectronix.com
https://taninjdm.com/ Our Lexus LS430 Dealership

TANIN AUTO ELECTRONIX
262-456-4147
contact@taninauto.com
www.taninautoelectronix.com
https://taninjdm.com/ Our Lexus LS430 Dealership

Last edited by TaninAuto; Jan 27, 2026 at 02:51 PM.
Anyway, tips for customer service, but thank you for supporting the forum and I will absolutely look you up when it's time.
Anyway, tips for customer service, but thank you for supporting the forum and I will absolutely look you up when it's time.
TANIN AUTO ELECTRONIX
262-456-4147
contact@taninauto.com
www.taninautoelectronix.com
https://taninjdm.com/ Our Lexus LS430 Dealership

We are a supporting forum vendor, our pricing is similar, we do more on-board repair work than them, we do free software updating, they have terrible google reviews surrounding their ECU repair work and warranty claims, and our core business is all Lexus so we know the in's and out's of every Lexus electronic item.
Thanks for any input!
You can imagine how sick I felt thinking my biggest worries were the tires. I was googling the entire time in the Costco waiting for my car, and I found some old threads here mentioning SIA. Already concerned about how crucial the ECU was/is, that was already a factor. Then I found a vlog (one of few if any) showing a customer getting his ECU back and installing it, and, as he panned to the ECU., it said, SIA. That's really the reason. I did see mixed bag reviews. I can't lie, I called them and they were very polite and helpful on the phone, and ultimately my ECU was turned around in 1 day, and out of the car 6, and back in on day 7.
I think this topic makes people nervous and so if they see lots of people going to one place, they feel it's worth a shot.... my .02 and I'm sure you do excellent work as well....
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You can imagine how sick I felt thinking my biggest worries were the tires. I was googling the entire time in the Costco waiting for my car, and I found some old threads here mentioning SIA. Already concerned about how crucial the ECU was/is, that was already a factor. Then I found a vlog (one of few if any) showing a customer getting his ECU back and installing it, and, as he panned to the ECU., it said, SIA. That's really the reason. I did see mixed bag reviews. I can't lie, I called them and they were very polite and helpful on the phone, and ultimately my ECU was turned around in 1 day, and out of the car 6, and back in on day 7.
I think this topic makes people nervous and so if they see lots of people going to one place, they feel it's worth a shot.... my .02 and I'm sure you do excellent work as well....
TANIN AUTO ELECTRONIX
262-456-4147
contact@taninauto.com
www.taninautoelectronix.com
https://taninjdm.com/ Our Lexus LS430 Dealership

Anyway, tips for customer service, but thank you for supporting the forum and I will absolutely look you up when it's time.
I didn't realize SIA left me two voicemails as we don't always check the land line. The first was can you please call us to let us know what the issue is on your Lexus ECU? Well, they must have in the meantime linked my emails to this order, and left another voicemail, our tech has repaired your TCU and it tests fine, we are shipping it back to you.
That was my bad I didn';t respond, but I think they found my emails for this order. I hadn't put any instructions in the box, just my order paperwork.
If your experience is like mine, you're going to be relieved that your car is back to normal, and think, man why did I worry so much hahahahahahaha
No lie when it first happened I thought there is a 50% chance this car is done, didn't know about the ECU issue....
edit Another thing that worried me after shipping out, was I supposed to remove those brackets that I call ears? They must come off to open the ECU, what if lost, I'll have no way of securing the ECU upon reinstall...I think I over worried, (but car does need it to run) as it did come back with the brackets. Believe me I was super worried when I sent out my BMW ABS pump in 2016, and that was in Idaho basically east to west coast, just the fact that if lost, no way to avoid dealer coding a new one...
Last edited by Johnhav430; Feb 8, 2026 at 06:09 AM.










