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Should You Turn Off the Air Conditioning Before Shutting Down an Automatic Transmission Car?

1 Answers

DelRuby

07/30/25 3:05am

It is essential to turn off the air conditioning before shutting down the car. If the air conditioning is not turned off before shutdown, the vehicle will start with the pressure of the air conditioning system during the next ignition, which can easily cause damage to the engine and battery, while also shortening their service life. Below is an introduction to related content: Advantages of turning off the air conditioning before shutdown: Turning off the air conditioning 7 minutes before shutdown allows the remaining warm air to dry the moisture inside the evaporator, eliminating the temperature difference with the outside environment. This can relatively reduce odors in the air conditioning system and maintain its relative dryness. Turning off the air conditioning a few minutes before shutdown and shutting down all lights and electrical equipment before turning off the engine can extend the service life of your car's components through proper usage methods. Disadvantages of not turning off the air conditioning before shutdown: This can make the evaporator damp, leading to the proliferation of mold inside the air conditioning system, causing unpleasant odors and making the air inside the cabin turbid, which can affect the health of the car owner.

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