Can You Still Drive with Abnormal Speed Signal?
2 Answers
You cannot drive. Below is the relevant introduction about the speed sensor: Introduction: The speed sensor is a device used to detect the speed of electronically controlled vehicles. The control computer uses this input signal to manage engine idle speed, torque converter lock-up in automatic transmissions, automatic transmission shifting, the opening and closing of engine cooling fans, cruise control, and other functions. Features: The speed sensor is typically installed inside the drive axle housing or transmission housing. The speed sensor signal wire is usually encased in a shielded jacket to eliminate electromagnetic and radio frequency interference caused by high-voltage ignition wires, car phones, or other electronic devices. This ensures uninterrupted electronic communication and prevents degraded driving performance or other issues.
I once experienced abnormal vehicle speed signals while driving, and to be honest, it was quite concerning. The speed signal comes from the wheel speed sensor. If it's abnormal, the dashboard may display inaccurately or fluctuate erratically, and the automatic transmission might fail to shift gears properly, often getting stuck in low gear or experiencing severe jerking. More importantly, the ABS anti-lock braking system and ESP anti-skid system rely on it. If it malfunctions, emergency braking or turning can easily lead to loss of control, increasing the risk. Can you still drive? You might manage with cautious low-speed driving, such as driving within a city speed limit of 30 km/h to a repair shop, but it's strongly not recommended to drive for long periods or at high speeds. Safety is the top priority. I suggest immediately slowing down, pulling over to check the issue, calling a tow truck, or driving at low speed to a repair shop—don't take risks to avoid accidents. Regularly cleaning dust from the sensor can help reduce such problems.
