Here's a breakdown of what could be causing the light:
* Faulty ABS sensor: These sensors monitor wheel speed. A malfunctioning sensor (often due to dirt, damage, or a wiring issue) will trigger the light. This is a common cause.
* Faulty ABS control module: This is the "brain" of the ABS system. If it fails, the light will come on. This is a more serious and potentially expensive repair.
* Low brake fluid: While not directly related to the ABS itself, low brake fluid can trigger the ABS light as it's related to the overall braking system.
* Wiring problems: Damaged or corroded wiring in the ABS system can interrupt signals and cause the light to illuminate.
* Faulty wheel speed sensor ring: These rings are located on the wheel hub and can get damaged or corroded.
* Faulty ABS pump: Less common, but a failing ABS pump can also cause the light to illuminate.
What to do:
* Don't ignore it: While you can still brake, the ABS functionality is lost. This means you might not have the benefit of ABS in an emergency stop, potentially increasing your stopping distance.
* Get it checked: Have a mechanic, preferably one experienced with older vehicles, diagnose the problem. They'll likely use a scan tool to read the ABS system's diagnostic trouble codes (DTCs) to pinpoint the issue. Ignoring the light could lead to more extensive and costly repairs down the line.
* Check brake fluid: As a simple first step, check your brake fluid level. If it's low, you need to address that immediately.
Simply resetting the light won't solve the underlying problem. You must find and fix the cause of the malfunction.
