CVO 2/3/2013See this Stoplight Switch
For your 2003 Jeep Grand Cherokee 2WD 4.7L SFI 8cyl
Stoplight switch directs current to the stop lights, cruise control, and shift interlock to turn them on or off
When not replaced, stop lights will run continually or not function, potentially causing premature bulb failure, safety issues and/or the transmission will not shift out of park.
The brake switch might get stuck and triggered the brake lights.
HouseCallAuto 2/3/2013If the brake fluid level is below the minimum line on the reservoir, the light will be on all the time.