I have a 2010 Tacoma Access Cab 4x4.it had a low brake pedal.I bought brakes for it started to put them on and I seen that the back brakes were still good I checked the front and the front pads were worn down a little bit so I did replace the front pads.The front rotors and calipers are in great shape. I adjusted the back drum brakes up tight.All wheel cylinders are good no leaks I still have a really soft pedal. we bled the brakes three different times. I am thinking that the master cylinder has a leak in it I am going to take the lines off and Bleed It and then I'll bleed the truck brakes if that doesn't get a hard pedal.I can stop but really low pedal and if I sit at a light and push it will go to the floor.Just not sure about the anti lock brakes being like this want another opinion before I replace the master cylinder.Thanx