Yes, turning off the air conditioning (AC) in a car can make the seats feel colder, at least initially. Here's why:
When the AC is running, it cools down the air inside the car and reduces its humidity. As a result, the surfaces in the car, including the seats, become cooler as they lose heat to the cold, dry air.
When you turn off the AC, the air inside the car will gradually warm up due to the external temperature. However, the seats, which are good insulators, will retain the coolness for a while. This is similar to how a cold object left in a warmer room will take some time to reach the ambient temperature.
So, for a short period after turning off the AC, the seats may still feel colder than the air inside the car. However, over time, as the seats lose heat to the surrounding air, they will eventually reach the same temperature as the ambient air inside the car.