Hello everyone....I have a ford ranger 2001 4x4. The brake light on the dash came on...say's " Brake 1 " what does it mean? I got the light off by filling the Master cylinder resevor..which did not change anything. Then I unplugged the sensor on top of the Master and the light did go out so I plugged it back in and is out for now but I am not sure I ..FIXED ...anything