The brake light and the rear ABS lights on my 1992 bronco came on today while driving, what could it be?

Question

The lights dont go away if i turn the car off and on again. Whats my next step?

Answer 1

There is a connector under the instrument panel somewhere that needs to be disconnected. ONE of the halves has to be GROUNDED (contacting any metal part of the vehicle) with the key turned to the "ON" or "RUN" position. Within seconds, you'll see a series of flashes of the ABS light. The number of flashes indicates the fault code. DO NOT ground the wrong half of the aforementioned connection or you will blow a fuse. Get a manual for complete instructions and diagnostic steps. As the other poster said, and I've seen personally, the brake fluid level sender failing could cause this. The most expensive the problem will be, will be a failed RABS (rear ABS) valve. But even that itself, is not that expensive, especially when compared to the cost of an HCU assembly for 4-wheel anti-lock brake systems. Hope this helps.

Answer 2

Have the brakes checked at a garage. I see this all the time working in a brake shop. And the Rear ABS on these vehicles are useless (I drive an 1989 Ranger, same style, I don't like the RABS) the brake light comes on when there is a problem with the brake system, caused by low fluid. the fluid goes low for 2 reasons, either the linings are low, or the rotors or drums are worn too thin. OR there is a leak in the systme somewhere.Have a brake inspection done at a garage.

Answer 3

The first thing to do is make sure the brake fluid in the master cylinder reservoir is topped up. That may fix the whole problem. If the ABS and ETS continues to light you probably have a wheel speed sensor beginning to fail. You need to have the ABS system scanned for codes to determine which speed sensor it is. The cheap scanners at the parts stores don't have ABS capability. Mechanic time.

Answer 4

I would have a mechanic check the rear brake linings and sensors. Usually this is a sign that the sensor is bad. Had that happen on a large truck once. the sensor had fell out of its mounting bracket.. Might try to unhook the battery and wait 5 mins then hook it back up. This resets the computer and clears any warning codes in it. Might shut the light off for awhile but won't fix the problem with the brakes. Take it to a shop.

Answer 5

check your brake fluid level first, then if low top it up and check your brakes. Low fluid means low brakes or system leak.
With both the red brake and yellow ABS lights on, check hydralic system first.
Common early Ford problem is a bad fluid level sensor in the bottom of the Master Cylinder

Answer 6

You have a short to hot but it isnt enough to blow your fuse. I would try to find a manuel from Haynes that will show you a complete wiring diagram of your vehicle. however since it is just your rear lights you should be able to trace the wires from the abs senor to your wiring harness that has your brake light wiring.

Answer 7

the bulb or battery