WHY DOES MY ABS AND BRAKE LIGHTS STAY ON?
brake and abs light check brake fluid level. The round float in the master cylinder directly controls the 2 dash lights.
The light is NOT directly controlled by the master cylinder float. The light is controlled by the ABS Module, which location depends on your vehicle. There are a number of different reasons the lights come on. If it comes on but shuts back off within seconds, don't worry about it, that occasionally happens when it gets a bad signal ("nonlatching error"). In rear-wheel-drive (RWD) vehicles, it is common for the differential speed sensor in the rear differential to go bad. You can pick up a Haynes manual to find if you can do at-home diagnostics (Temporarily grounding out the diagnostic lead will cause the ABS light to flash out a pattern indicating the error)
Check the Brake Pressure switch ( also known as SPEED CONTROL DEACTIVATION SWITCH ) which is located below the Brake fluid master cylinder for leakage. The leakage can cause both lights to stay on and also cruise control control not working
Sep 22, 2014 |
1998 Dodge Ram 1500 4WD