4RUNNER 2016 limited brakes by itself

Hello everyone, I have a very strange problem with my 4Runner. It brakes by itself, a light on the dashboard turns on, it makes a noise like the ABS, and it brakes without pressing the brake pedal. My mechanic doesn't know what to do, and I have the computer plugged in but it doesn't detect the fault in the history. I am sharing a video where I explain it, but it's in Spanish. Does anyone know what it could be?

 

Sounds like the VSC...

https://www.4runners.com/threads/vsc-problems-please-help.41206/

 

Your scanner needs to be able to read brake system codes, which are not engine codes and therefore not stored in the ECM. That'll be the first step in the diagnosis.

If your scanner has real time data, you can jack the vehicle off the ground with the transmission in neutral. Spin each tire by hand and verify the wheel speed data in the scanner shows sensible values with no dropout.

 

thanks, guys i will let you know what happens we tried everything and all check out ok !

 

Find a new mechanic.

 

Beside a bad wheel speed sensor, it’s possible that you need to do a zero point calibration. Sometime after an alignment where they adjust steering wheel center will cause the zero point to need resetting.