Can the Transmission Mileage Be Altered?
2 Answers
Car mileage can be adjusted. There are two types of odometers: mechanical odometers, where the mileage can be altered by removing the instrument panel and manually adjusting the mechanical gears; and digital odometers, which display mileage on an LCD screen. For digital odometers, the mileage data is stored in a microcontroller within the instrument panel, and modifying the corresponding data in the microcontroller can adjust the displayed mileage. Car mileage is calculated based on the number of rotations of the tires (front wheels), processed by sensors and the car's computer, and displayed on the odometer. The total mileage of a car refers to the total distance the vehicle has traveled, which is shown as the numerical value on the odometer in the dashboard. To adjust the mileage, locate the odometer sensor plug on the car's clutch housing (the position varies, sometimes found on the transmission or driveshaft), and gently pull it out by hand. Then insert the output plug of the mileage adjuster into the signal socket of the pulled-out sensor plug. Adjust the small knob on the mileage adjuster to set the desired speed of the vehicle.
Yes, it's technically possible, but the risks are too high. I've been repairing cars for several years and have seen many cases. Some people use specialized devices to connect to the vehicle's OBD port, allowing them to lower the displayed mileage and make the car appear to have driven less. This method is relatively easy on some older models. However, the actual working mileage of the transmission itself cannot be arbitrarily altered because internal components like gears and fluids record the true wear and tear. Only the odometer display can be tampered with to deceive. But this practice is illegal in China, considered as falsifying vehicle records, violating the Anti-Unfair Competition Law and the Consumer Rights Protection Law. If you discover mileage tampering when buying a used car, you can demand a refund or compensation. As a car owner, I recommend regularly documenting real maintenance data, such as the mileage readings during each service, to avoid being deceived. In short, altering the mileage not only cheats others but may also damage the car's hardware by neglecting actual maintenance needs. It's best to steer clear of it.
