You can view the Owner Guide online ( which includes the fuse panel diagram and location ) at :
www . motorcraft service . com ( no spaces )
Click on Owner Guides
You can view the 2003 Ford Explorer Sport Trac owners manual online at : www . motorcraft service . com ( no spaces ) Click on Owner Guides The fuses and relays section starts on page 137
If the bulbs and fuses are fine, it must be your brake light switch attached to the arm on your brake pedal.
The 2003 Ford Explorer has a V6 engine.
The 2003 Ford Explorer has 12 valves.
fuses location
The 2003 Ford Explorer has a 5-speed automatic.
Did you check the switch on the brake pedal assembly?
How to remove fan clutch on 2003 ford explorer
The 2003 Ford Explorer's turning circle is 36.7 ft..
The 2003 Ford Explorer is 15 ft. 9.5 in. (189.5 in.) long.
The 2003 Ford Explorer has a 23.6 degrees angle of departure.
The 2003 Ford Explorer has single overhead cam (SOHC).