If your refering to the over drive button. It's located on the shifter handle.
Override button for what?
In the front passenger footwell by the kick panel
Press the shift lock override button next to the shifter. Make sure you push it as far down as you can.
Assuming headlights, check fuses. Overheadlights, check override button left side of dash board near odometer.
Check Owner's Manual. If you do not have one. Check Related links below.
It is the red triangle labeled button above the radio/cd player.
Speed sensor on a 2001 ford expedition
The 2001 Ford Expedition has a V8 engine.
The 2001 Ford Expedition has 16 valves.
r134a for a 2001 Ford Expedition
It's in the right front passenger footwell , by the kick panel ( it has a button on the top )