BYD F3 Rear Wheel ABS Sensor YDF3-4013100 Original Fitment

If your BYD F3 shows ABS warning light on, or wheels lock during emergency braking or brake pedal feel abnormal, the rear wheel ABS sensor may be aging/damaged, failing to transmit wheel speed signals accurately. Sensor monitors wheel speed and sends data to ABS control unit to modulate braking force for anti-lock during emergency stops. OEM YDF3-4013100; fits BYD F3 (original model F3-3630300). Installation: clean iron filings and oil residue from sensor mounting hole; ensure harness secured and not interfering with moving parts; otherwise signal may be abnormal or warning light re-illuminate.