[LOWRIDER]

You always have to first approach a repair diagnosis with the KISS principle. Keep It Simple Stupid. Many people see a warning light on in one of the newer computer controlled vehicles and their hair catches on fire. You need to step back for a second and look at the basic things first. A low brake fluid level is a common occurrence on more than just a Grand Marquis. The Aerostar would turn the light on when the brake light bulbs burned out. Plenty of time to panic after you rule out the easy things.