For example, the battery is out of power, resulting in the low voltage is not enough to start the car. In general, this happens more often when the car stops for several days and doesn't work, then it can't start. To identify whether it is a battery problem, we can check whether the horn will ring and whether the indicator lights of various instruments will be on normally after the car is powered on. If it is OK, the battery problem can be generally eliminated.
The control unit is the interface connecting the start / stop button and the ring antenna, while the ring antenna on the steering column transmits key data, which is used for communication between the signal transceiver chip (in the identification sensor) and the CAS control unit. Once the identification sensor is damaged or the signal transmission is interfered, it is unable to communicate with CAS, so CAS cannot be authorized to start.
Add the fuel with poor quality: there are many impurities in the fuel, and the output power after combustion will be relatively small; for example, the fuel filter is too dirty, or there is a lot of carbon accumulated in the oil circuit that hasn't been cleaned for a long time, resulting in poor fuel supply, resulting in the engine power reduction; this mainly checks whether the air intake system is blocked or leaking, which will definitely affect the combustion of the mixture if the air intake is affected. Here we mainly check whether there is any problem with the air filter, intake pipe and various vacuum hoses.