Turning off the air conditioning (AC) in a car will not directly make the seats colder. The AC system in a car is responsible for cooling down the air inside the cabin and reducing the overall temperature. When you turn off the AC, the air inside the car will gradually return to the outside temperature.
However, the perception of the seats being colder after turning off the AC might be due to the following reasons:
Air circulation: When the AC is on, it creates airflow inside the cabin, which helps in distributing the cool air evenly. This airflow can also reach the seats and provide a cooling effect. When you turn off the AC, the air circulation is reduced, and you might feel that the seats are colder because there is no moving air to balance the temperature.
Seat material: Some car seats, especially those made with materials like leather or synthetic leather, can retain heat. When the AC is on, it cools down these materials, making them feel cooler to the touch. When the AC is turned off, the seats may start to absorb heat from the surrounding air, giving the perception of being colder, especially if it's hot outside.
Psychological effect: The mind can play a role in how we perceive temperature. When the AC is on, we expect the interior of the car to be cooler, and any slight change after turning it off might be perceived as a significant difference in temperature.
In reality, the seats themselves won't become colder just because the AC is turned off. If you want the seats to feel cooler without using the AC, you can try parking the car in a shaded area, using sunshades on the windows, or opening the windows for a short while to allow hot air to escape and fresh air to circulate. Keep in mind that these methods will have limitations, and the most effective way to maintain a consistently cooler interior is by using the car's AC system.