Hi forum. I have been driving my car with traction control light on and no issues. But today when I parked it and 30 minutes later it seems the brakes abs or booster just failed. I am getting a lot of codes. Pls see the attached pic Looks like abs system failed not sure where to start.
When I start the car the abs, traction and brake lights are On and the car has a beep nonstop Brakes are 5% and paddle feels like dead
Those screenshots look like car that has been piling up one unfixed issue on top of another for years....
There had no light besides the traction control and the Car passed the inspection 3 weeks ago. May be there were issues but nothing to show for it.
There is a C1241 in there, indicating a low power supply voltage arriving at the brake ECU. That doesn't always mean the 12 volt battery, because the code is about the voltage arriving at the ECU up front, so wiring or connector problems are also possible. Nonetheless, if you have not measured the voltage of the 12 volt battery, it would be a natural place to start, especially when that code is present.
Tried to reset the light using a mecha I shop computer (borrowed from a friend ) and after that the car brakes are working normally. I still sense the paddle is not as responsive. So the booster or brake pump is not working. Bit I can drive the car. The brake and abs lights are on with traction control . Least the car is moving and I can take it to a shop.
Like ChapmanF mentioned battery is a good thing to check / rule out for low voltage issues. Also whenever I hear brake booster issues I always think the of the ZJB bulletin. Customer Support Program Notification ZJB (anyone else?) | PriusChat https://www.hometownhybrids.com/wp-content/uploads/2019/10/ZJB-Phase-2-.pdf
My 12 v battery measures 11.70v on battery terminals before starting the car and 14.2 vonce the car is On and motor is running or not.
In that case, the C1241 probably indicates an issue in the wiring or connectors bringing power to the brake ECU.
Did a recent scan as the car was driving just fine other than the brake, abs and traction light these are the active codes. C1203 ecm communication circuit C1231 steering angle sensor C1345 liner solenoid value offset learning undone See the attached l
