For some reason my ABS light has come on. I took the car to Firestone and they checked out my entire brake system and said nothing was wrong with it. I was wondering if anyone knows something?

 

I'm no expert, but I'd disconnect the battery for a few minutes and re-connect it to see if that clears the code.

 

tried that, any other suggestions?

 

That tells me that you have an active code. Somethings actually wrong. About all you can do is check each wheel sensor to make sure each plug is plugged in at the sensor and that the wires leading to this sensor within about 2 feet of the sensor aren't cut or rubbed through or anything. Other that this you need for someone to read the actual code to see where the problem is. Sorry I can't help you more than that

 

Yes they checked the master cylinder and the sensors at each wheel. The entire system is fully functional. The brake goes down as far as i push it. I took it to another mechanic he told me he doesnt know why the light is on.