Can a car's mileage be tampered with?
1 Answers
Car mileage can be tampered with. There are two types of car odometers: mechanical and electronic. For mechanical odometers, the method to adjust the mileage involves removing the instrument panel and manually turning the mechanical gears to alter the displayed mileage. For electronic odometers, the mileage can be adjusted by modifying the corresponding mileage data in the microcontroller. Mechanical odometers obtain their rotation signal from the rear end of the transmission output shaft. The method involves the transmission output shaft driving an odometer gear to rotate synchronously with the output shaft. This gear then drives a flexible cable, the other end of which is connected to the odometer. According to a preset ratio, the flexible cable drives the odometer's counting gear to rotate, thereby calculating the car's mileage data. Electronic odometers feature a display screen where the displayed parameters are controlled by the vehicle's onboard computer. The speed sensor transmits the wheel rotation signal to the onboard computer, which calculates a value based on a pre-stored program and displays it on the dashboard, continuously updating as the car moves. Compared to mechanical odometers, the primary difference is the replacement of the flexible cable with sensors, overcoming the drawbacks of mechanical odometers such as needle oscillation and the fragility of the flexible cable.
