Regarding your question, it is suggested that the vehicle check the use of spark plugs and check the carbon deposition of throttle body and idle valve. Cars with short mileage will not have any major problems, mainly due to poor ignition system or unstable idle speed caused by carbon deposition. It is normal to turn on the light and idle slightly, and there will be a certain voltage drop. Please feel free to use. I hope my answer is helpful to you.