Is it really necessary to turn off the air conditioner and music before turning off the car?

Is it really necessary to turn off the air conditioner and music before turning off the car?

There are always some widely circulated "little tricks" and "tips" about using a car, such as warming the car in place, driving for a few minutes before turning on the air conditioner, coasting in neutral, and turning off the engine whenever you stop. Also, be sure to turn off the air conditioner and music before turning off the engine...

Some of these so-called veteran drivers’ experiences are pseudoscience, while others are true knowledge gained from practice. So, is it really necessary to turn off the air conditioner and music before turning off the car?

First, let’s talk about the origin of this approach.

There are two theories. One is because the air conditioner is turned off directly. When it is started next time, the starter motor has to be responsible for the engine and the air conditioner at the same time. The increased load will damage the car.

Some people say that if the air conditioner is turned off without turning it off, the water vapor on the evaporator will condense and bacteria will breed, which will easily produce air conditioner odor. These statements all seem to be reasonable. As for whether to turn it off or not, it depends on what kind of car you drive.

For those who are worried about the motor first, don’t be afraid if you forget to turn it off in the future.

Because such statements mostly refer to early cars. Previously, the car was in the running-in and development stage, and the power supply system, including the motor, battery, etc., was not very stable. If it was not turned off, it would be easy to cause failure due to excessive voltage. In order to reduce unnecessary troubles, many car owners retain the habit of preventing problems before they occur.

As today's automobile technology improves, on-board computers also play an increasingly important role, especially in the protection of the power supply system. Whether it is just starting up or driving, the computer will reasonably allocate power and optimize itself to ensure that it works in a stable environment.

Even if the car owner forgets to turn off the air conditioner or audio-visual system, the system will turn off some electrical appliances when it is first started, and then turn on the air conditioner when it is operating normally. To put it bluntly, if the large central control screen is always on, there is no need to worry about running out of power or damaging the car, and an air conditioner will not be in the way.

Friends who are worried about odor should also pay attention.

Theoretically, turning off the air conditioner in advance and leaving only the fan working can dry the evaporator and avoid mold and odor. But the actual operation is not easy. For example, how far in advance is the right time to turn off the air conditioner?

In fact, for some luxury cars, there is no need to worry. Some cars are equipped with a low-power automatic pipe drying function, which means that whether the owner turns it off or not, the car will solve the problem for you. For family cars, if you don’t have the habit of turning off the air conditioner, don’t worry, just do regular cleaning.

Of course it is very advisable to have good driving habits and a precautionary attitude, but too much is not enough, especially if you forget to turn it off, you don’t have to feel as scared as if the sky is falling and your car will break down. Be normal, after all, cars still exist to serve people.