Why do the handbrake light and ABS light come on at the same time?
2 Answers
The simultaneous illumination of the handbrake light and ABS light may indicate a malfunction in the ABS system or handbrake. It is recommended that the owner immediately inspect the ABS system. On the dashboard, there is an indicator light for the ABS system. When the ABS system is functioning, the indicator light will blink. If the ABS system malfunctions, the indicator light will remain continuously lit, and the driver should take the vehicle to a repair shop for inspection. If the ABS system fails, the wheels may lock up during braking while driving, which is extremely dangerous. Additionally, if the handbrake is not fully released, the handbrake light will also stay on. The ABS system, or Anti-lock Braking System, is a standard feature in almost every vehicle. This system prevents wheel lock-up during emergency braking.
I've been driving for over a decade and encountered this issue before. When both the handbrake light and ABS light come on simultaneously, it usually indicates an abnormality in the braking system. It could be triggered by low brake fluid level activating the sensor alarm, or a faulty wheel speed sensor misleading the system, or even loose chassis wiring connections affecting signal transmission. Another common scenario is unstable battery voltage causing the electronic control unit to falsely report error codes, especially when wiring is prone to moisture in humid weather. You should immediately check if the brake fluid level is between MIN and MAX marks, and also inspect tires for abnormal wear or deformation since these components are related to ABS functionality. Continuing to drive without addressing this may weaken brake response or even cause accidents. I recommend immediately visiting a professional auto repair shop for comprehensive diagnostics—they can pinpoint the exact fault using diagnostic tools.
