Turn off the power first to prevent the car from inexplicably draining power

Car power consumption refers to the phenomenon that the engine and the vehicle's electrical equipment are turned off, the door is locked, and the driver no longer uses the vehicle and the battery is depleted. The chronic power consumption of the car makes the battery power shortage, causing the vehicle to fail to start, which often brings great inconvenience to the owner.

Modern car circuits are complex and have many electrical equipment, such as audio, anti-theft, central control door locks, electric windows and doors. These electrical equipment, when the ignition switch is off, there is still power supply. Therefore, to find out the power consumption of the vehicle, you should first figure out which appliances have power supply after turning off the ignition switch, and then eliminate them one by one. Car emergency start power expert advice:mobile power plant

Turn off the engine, audio, air conditioner, pull up the handbrake, close all the doors, the front cover, the trunk cover, and observe whether the indicator light is on. If no indicator is on, measure the current in series with the meter at the positive end of the battery. Normally, it should display 0.00. Ma, when working with useful appliances, the current is displayed between 0.03ma and 0.6ma.

1. Check the lighting system, small lights, brake lights, hand brake lights, gear lights and indoor lights, door lights are off.

2. Whether the car cabin cover lighting, trunk lights, etc. are closed.

3. Check the anti-theft device and remove the anti-theft device to observe the current.

4. Check the air conditioning system, whether the blower, air conditioner switch, electric fan, etc. are closed.

5. Use the electrical power cord to ground the iron. When a certain electrical appliance has wires broken and grounded, and the electrical appliances do not work, the fault points should be eliminated one by one.

There are many factors in the power consumption of the car. In the process of maintenance, it should be excluded one by one for the electrical equipment.