English 
where to get your speedometer calibrated
The adjustment method of the speedometer is different according to different models. It is recommended to go to the 4S store and let professional personnel operate it. The speedometer is used to check the running speed of the vehicle. It supports two units of miles per hour or kilometers per hour. The measurement of the vehicle speed is realized through the speed sensor. The running speed of the vehicle is closely related to the radius of the wheel and the structure of the rotating shaft. There are two main reasons why the speed displayed by the speedometer is larger than the actual speed: for safety reasons and errors in the calculation process. There is a maximum speed limit on the roads in China, which is specified according to the number of accidents and the conditions of the roads. In order to avoid speeding and prevent vehicle owners from overtaking. In addition, the speed measuring device on the vehicle may be delayed. In order to avoid the instantaneous vehicle speed being too high, when the displayed value is larger than the actual value, the danger caused by sudden acceleration of the vehicle can be prevented.There is no way to adjust the speedometer if it is not accurate. The first task is that under normal conditions, the displayed speed of the vehicle will be 5 km / h higher than the actual speed. This situation is normal and there is no need to deal with it. Secondly, if the wheel hub size of the subsequent modification of the vehicle is different from that of the original manufacturer, the speedometer may have a large deviation. When replacing the tire hub, do not change the outline dimension of the original wheel, otherwise the speedometer error is very large and it is easy to cause overspeed.
If you want to try:
1 insert the pulled out sensor to find the clutch housing of the car, and then gently pull it out by hand; Insert the instrument output plug-in into the signal Jack in the pulled out sensor pin, and accurately insert the instrument into the cigarette lighter; 2 open the car key open the car key, rotate it, adjust the small adjustment button on the instrument, and adjust the car speed to the required speed. The speedometer shows the speed of the car per hour. The automobile speedometer consists of two meters, one is a speedometer and the other is an odometer. The speedometer is directly in front of the driving position. The traditional speedometer is mechanical. The mileage accumulated by the current electronic odometer is stored in the nonvolatile memory and can be saved in the power-off state.
Get a Quote / Info