Intermittent Brake/ABS light & mushy brakes

So when the lights are on and things are not happening as expected why is no one trying to read codes The light is generally on because the computer has seen something that it does not appreciate electrically. So usually we start scanning the system the 20 computers in the system or so for codes to get deep into these computers it takes some well designed software made by several companies If you don't have that many times you're scan tool will show nothing and what have you and you think everything is great and you have no codes but yet you have lights on the dash there's a reason those lights are on on the dash and it's not just to illuminate some LEDs. They're there because there is something stored in systems eProms or something and somebody needs to get that data out so they can make proper diagnostics You will see threads here with people swear up and down they have no codes and they're right they don't The car does they're not up on how to extract from the car and therefore they have no codes to them

 

I love how often people "find the hack" for getting the trouble codes to find out what the root cause is, and then only use it to clear them. You were this close to finding out why your warning lights were on. Next time you get the chance, you can post the trouble codes here.

Blink (a/k/a Flash) Codes – How to. | PriusChat