Baojun 730 rings after unscrewing the key.

First, this related sound belongs to the sound emitted by the vehicle throttle self-test, which belongs to the normal throttle self-test state, and there is no problem. As long as the vehicle can start normally, there is no problem.

Second, if the quality is not good enough to start, this suggestion is to clean the throttle and then re-match the throttle.

Third, check whether it is the sound from the internal and external circulating motors in the cab. If the internal and external circulation motors get stuck, there will be a similar sound.