Brake, ABS, Red Triangle (Display P/S Problem)

Hello there,

Please help! After jumping a dead battery due to letting it sit for 2 weeks in cold weather, I had several lights come on (brake light, ABS light, Red Triangle, display say “problem” followed by “P/S”. 12 V battery has been test and is fine. Codes that come up are C1241, C1253, C1256, C1310, C1313.

I have been driving the car for the past 2 weeks even with the lights. The skid control is not working like it used to in the snow. ABS system doesn’t work as I heard my tires squeal once when hitting the brakes hard. I believe my power steering seems to still be working.

My current theory: I think I fried the Skid control power supply circuit and/or Brake control power supply assy when I jumped my car. I’m 99% sure I didn’t reverse the polarity. I triple checked!

 

Thanks a ton for your comments. The dealership mentioned that they cleared the codes after putting in a new 12v and they popped right back up. So for I have swapped all relays related to the abs system as well as pulled a used Brake control power supply assembly and replaced my current one to see if I could make it an easy fix. Still have to codes popping up (I can’t wipe the codes on my own right now).

I also pulled a used ABS ECU assembly but have been dragging my feet on replacing it in my Prius since I have to pull apart the dash. Once I swap out and if codes are still present, I may take to a local shop with tech stream to get codes reset.

I’m handy but still a novice. I’m open to any extra advice. I know a common recommendation is to get something type of reader. So far I have seen people recommend tech stream and a windows pc. It seems very involved. Any recommendations on something that is more plug and play? Ideally not crazy expensive (below 200).