I often see many netizens saying on the Internet that there is a problem with my car, the back door cannot be opened, the steering wheel is locked, the underside of the chassis is clicked, etc. In fact, in most cases, similar problems are These are some extended functions of modern cars, or normal phenomena of parts. Today we will talk about these. If you encounter the following situations, don’t worry, these are normal phenomena or problems that can be easily solved.
Rust on new car brake discs
Note: gentle brake break-in
This situation is more common in summer or in the south, especially for some stock models, the brake disc is more rusted, mainly because the brake disc is usually made of steel (usually cast steel), Stainless steel usually has average wear resistance and strength, so naturally there will be rust. There is no need to worry about this situation, as long as you drive gently according to the manual, run it in for a certain distance, and the rust will disappear.
Motor sound when plugged in
Gas pump for warm-up exercise
For normal ignition Switch models, when you need to ignite, when you pass the power switch, you can sometimes hear the buzzing sound from the vehicle. In fact, don’t worry, this is the pre-pressurization of the oil pump, which is used after ignition. Prepare for normal fueling work. Especially when the sound insulation of the vehicle is not very good, this phenomenon will be more obvious, but it is still a normal phenomenon.
Of course, if it is the whistling sound of the gasoline pump, it is not so normal. It needs to be checked, otherwise the gasoline pump is broken, and the car can only wait for rescue.