It is most likely the switch that is mounted above the parking brake foot pedal. It points straight down and a tab on the lever depresses it when the brake is released. If this switch is bad, it will not turn on the warning light when you engage the parking brake. They are very cheap and not too difficult to change.
How do I adjust my emergency brakes on my 1999 ford expidition?
From the Ford Dealer
The Ford expedition emergency brake cable is held in place with swivel nuts on each end of the cable. Turn the swivel nuts to the left, to remove the cable. Reverse the process to install your new emergency brake cable.
If the brake fluid level in the brake master cylinder is low ( in your engine compartment ) that will also turn on your emergency brake light just as if the emergency brake was applied
The left brake light works the right brake light doesn't and the bulbs is good
your switch my need adjusted or replaced
where is the emergency override button in 2001 ford expedition
ck break fuild!
In order to change the brake light on the Ford LTD Expedition 500 series you must remove the light cover from the back of the lighting panel. You can access this from the trunk. Inside you will find the bulbs for the tail lights and brake lights. Remove the light and replace it with a new one.
The brake warning light comes on in your dash if the emergency brake is on or the brake fluid level in the brake master cylinder in your engine compartment is LOW
Remove the tail light housing and replace the bulbs.
There might be a break in the wiring.