BMW 5 Series is the most advanced luxury car produced in China. Battery maintenance method of BMW 5 series;
1. Don't park the battery of BMW 5 Series in the open-air parking lot for a long time. If it is parked for a long time, it must be removed and taken away to prevent the battery from freezing and damage.
2. It is difficult to start in winter. The time for starting the car at a time should not exceed 5 seconds, and the interval for starting again should not be less than 15 seconds. In the case of repeated starting and still not catching fire, the reasons should be found from other aspects such as circuit, ignition coil or oil circuit.
The battery should be charged frequently. If it is not used for a long time, it will slowly discharge itself. Every once in a while, you should start the car to charge the battery. Every once in a while, clean the terminals of the battery and apply special grease to protect the wiring harness.