ABS Warning Light On? A Mechanic’s Guide for BYD Yuan Plus Owners

Hey there, BYD Yuan Plus owner. If you’ve noticed that amber ABS light glowing steadily on your dash, I know how that feels. That little warning can be unsettling, but in most cases it’s not an immediate emergency. Let’s talk through what’s going on and how to approach it.

Why the ABS Light Stays On

In the Yuan Plus, the ABS control module constantly monitors each wheel’s speed sensor. When it doesn’t receive a clear signal from one or more sensors, it will light up the ABS warning lamp and often disable the anti-lock braking system. The most common trigger is a faulty or dirty wheel speed sensor, though sometimes it’s the toothed reluctor ring or a damaged wiring harness.

What to Check First

• Wheel speed sensors – Start with the sensor connector and wiring near each wheel. Look for corrosion, bent pins, or chafed wires.
• Sensor tips – Metal debris or dirt can block the magnetic sensing element. Remove the sensor and clean the tip gently.
• Reluctor rings – Check the toothed ring behind the brake disc for cracked, missing, or damaged teeth.
• Brake fluid level – A low brake fluid level can also trigger the ABS light in some BYD models, so check the reservoir.

Is It Safe to Keep Driving?

You can usually drive short distances with the ABS light on, as your normal hydraulic brakes will still work. However, your ABS won’t intervene in a panic stop, and you may lose stability aid if the system is disabled. If the brake warning light comes on together with ABS, stop driving and have the car inspected immediately.

This material is AI-generated and for informational purposes only — it does not replace an in-person diagnosis by a qualified mechanic.