Where is the speed sensor of BYD F3 located?
2 Answers
The speed sensor of BYD F3 is located on the transmission housing in the engine compartment. You need to remove the engine cover and use a flashlight to see it. The speed sensor is a device used to detect the speed of electronically controlled vehicles. The control computer uses this input signal to control engine idle speed, torque converter lock-up of automatic transmissions, automatic transmission shifting, engine cooling fan operation, cruise control, and other functions. The output signal of the speed sensor can be a magnetoelectric AC signal, a Hall-effect digital signal, or an optoelectronic digital signal. The speed sensor signal wire is usually installed in a shielded jacket to eliminate electromagnetic and radio frequency interference caused by high-voltage ignition wires, car phones, or other electronic devices, ensuring uninterrupted electronic communication and preventing degraded driving performance or other issues.
As a long-term user of the BYD F3, I know the vehicle speed sensor is typically installed on the transmission housing, near the end of the drive shaft, and connected to the instrument system via a small wiring harness. Its primary function is to capture wheel speed signals and transmit them to the computer to control the speedometer and ABS functions. If it malfunctions, the speed needle may stop moving or fluctuate erratically, and the ABS light may sometimes illuminate. Common issues include dust accumulation or magnetic ring wear, which can be prevented with regular cleaning. To inspect its location, the vehicle needs to be lifted for observation from underneath the chassis, and for safety, use a jack stand. I recommend that non-professionals avoid attempting this themselves, as it’s easy to damage the wiring harness, compromising driving safety. Replacing a new sensor is straightforward, costing around a few dozen yuan, and opting for genuine parts is more reliable.
