Why is the speedometer not moving?
2 Answers
The reasons why the speedometer is not moving are: 1. The speedometer in the vehicle's instrument cluster has malfunctioned; 2. The vehicle's wheel speed sensor has failed; 3. The vehicle's mileage sensor has malfunctioned; 4. There is an issue with the grounding of the wiring; 5. The connector between the vehicle's speedometer and the transmission has become loose. The speedometer on motor vehicles is commonly referred to as the odometer, which consists of a speed measurement device for the vehicle's traveling speed and a distance recorder for the distance traveled by the vehicle. The solution for a non-moving speedometer is: First, check the power supply during inspection. Use a multimeter to locate the B "positive" and "negative" terminals, connect an LED light to the signal wire, lift one of the drive wheels, start the engine, engage the gear to rotate the drive wheel. At this time, the LED light should flash. If it does not, the sensor may be faulty.
Last time I was driving, I encountered the speedometer needle not moving at all, which was really annoying. This is usually due to a problem with the vehicle speed sensor, which is installed near the wheels and is responsible for sensing speed signals. If it's covered in mud or damaged, the signal won't reach the dashboard. It could also be due to loose or aged wiring behind the dashboard. I tried unplugging and reconnecting the plug firmly, and it worked again. If that doesn't help, it's likely a blown fuse—try replacing the one corresponding to the speedometer in the fuse box. Remember to turn off the engine before checking to ensure safety. Don't force the car to drive without a speedometer, as it's easy to unknowingly speed and get caught or cause an accident. I recommend pulling over and fixing the issue before continuing. Modern cars also have electronic control systems—if all these issues are ruled out, it might be a module failure requiring professional diagnostic tools to check.