I turned on my car today and I got a check engine light and theres a message on my dashboard that reads Brake System Override Failure. Does anyone know what does that mean. My car also does not accelerate normally. Please help.

 

Scan it with techstream or go to your local dealer. Its hard to say for sure without fault codes.

Your car is likely in limp home mode which would explain the acceleration.

 

Where could the throttle position sensor be located? Where the gas pedal is?

 

I think is a bad sensor that needs replacing. I just need to find out where is the throttle position sensor.

 

Because I found this thread.
https://www.clublexus.com/forums/rc-...m-failure.html

 

 

The brake override system requires multiple signals to make it function.
In reality it's a software function of the Engine ECM...it looks at Accel Pedal position, brake pedal status, Engine RPM, Vehicle Speed, etc.
If anyone of those signals or systems go down, brake override will also be affected.

Without the trouble codes you are pretty much flying blind in terms of finding the faulty part.
And to the person that commented above, yes...the TPS is built into the Throttle body.

 

I scanned my car just now and this is the code I got P2118 TAC Motor Current Range /Performance

 

Here is the diagnostic chart for that code. I hope it attaches to this message ok.

 

Problem solved, it turns out because I was changing my battery last week (I did it on my garage never drove the car) I must done something wrong and blew a fuse. The fuse #10 I blew was ETCS located on the box engine compartment driver side. I replaced it now I can drive normally.