What Causes the Car Odometer to Suddenly Reset to Zero?
1 Answers
The odometer will automatically reset to zero after reaching a certain mileage, which is a natural phenomenon. The odometer is an instrument that records the vehicle's mileage and is generally installed next to the speedometer. The speedometer and odometer are actually composed of two gauges: one is the speedometer, and the other is the odometer. Traditional speedometers are mechanical, with a typical mechanical odometer connected to a flexible shaft containing a steel cable. The other end of the flexible shaft is connected to a gear in the transmission. The rotation of the gear drives the steel cable to rotate, which in turn drives a magnet inside the odometer's housing to rotate. The housing is connected to the pointer and, through a hairspring, keeps the pointer at the zero position. The odometer is a digital instrument that operates through the engagement of the counter drum's transmission gear with the worm gear on the speedometer's drive shaft, causing the counter drum to rotate. Its characteristic is that when the upper drum completes one full rotation, the lower drum rotates 1/10 of a turn. Like the speedometer, the odometer also has an electronic version, which obtains mileage signals from the speed sensor. The accumulated mileage data in an electronic odometer is stored in non-volatile memory, allowing the data to be preserved even when there is no power.
