Trooper S V6-3.5L (1998)
Brake Fluid Level Sensor/Switch: Description and Operation
With the ignition switch in ON or START, battery voltage is applied to fuse C-10 and to the brake system indicator light. If the brake fluid is low, the
brake fluid level switch closes, providing ground for the brake system indicator light, and the light comes on to warn the driver of low brake fluid. ( Note
: check brake pad wear before adding fluid.)