Brake warning lights after ECU reflash?

Brought our 2012 Toyota Prius Two with 151K in to the dealer for an oil change and a recall, which proved to be an ECU reflash. Brakes were working properly and there were no warning lights.

Car was returned to us with ABS, brake and traction control warning lights on (constantly). Service manager swears that it had nothing to do with anything they did and it was just a coincidence they came on when they did. I'm not a big believer in coincidences.

He says it is a leak in the ABS system and the repair will be $3,000 unless Toyota covers it. Warranty for this ran out, of course, at 150K. He is trying to see if Toyota will cover it. We have not heard back.

We have noticed no leaks and brakes seem to work fine.

I have a Scangauge II and think I will try to clear the codes tomorrow, and see if they come on again.

This was the same dealer that falsely claimed a few years ago the thread of the Goldplug I had installed was too big, (nope, it was the right size) and they would have to change the oilpan for $600. This was many oil changes ago. So this dealer lacks credibility with me.

 

Dealer is trying to get the brake repair covered under the ZJB customer service program for the brake booster assembly. See how it goes. The 150k mark proved not to matter because the CSP expires 8/31/21 for 2012 Priuses regardless of mileage, but the car does not seem to be throwing off the correct codes.

 

I bought a Bluedriver and it is reading DTC Codes C1345 (Linear Valve Offset Unlearned) and C1451 (Motor Drive Permission Malfunction). Neither of which is among the four qualifying codes listed in the ZJB CSP (C1391, C1252, C1256, or C1253).

C1345 has to do with the Skid Control ECU. I wonder if the reflash did something to that, triggering the C1345 code, which in turn triggered the C1451 code, which turns on all of the warning lights, and cuts off regenerative braking, leaving you with the standard disk brakes only.