Should the AUTO Air Conditioning Be Turned Off Before Shutting Down the Engine?

1 Answers
DelRhett
07/30/25 4:17am
It is necessary to turn off the AUTO air conditioning before shutting down the engine. Here are the related explanations: 1. Increased load: If the air conditioning is not turned off before shutting down the engine, the evaporator, which has been cooling continuously, will have a relatively low temperature after parking and will adsorb many small water droplets on its surface. If left unattended, bacteria will breed inside the evaporator over time, producing a musty odor. 2. Impact on lifespan: If the air conditioning is not turned off before shutting down the engine, it will automatically turn on when the engine is started next time, which unnecessarily increases the load on the engine and damages it. 3. Correct procedure: The proper operation should be to turn off the air conditioning first, then switch to the external circulation mode to allow the blower to dry the water droplets on the evaporator before locking the car.
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