First of all you should ask your question on another forum because only three people use this one. One being me, and I know virtually nothing about cars except how to drive them. Do you know if the A/C even works? Remember it only comes on when you turn it on, or in the winter when you turn on the defroster. It lets the car have dehumidified air so that the defroster can work quicker/better. If you use the car in the winter you might consider keeping it. If you’re not using it regular basis it’s probably shot already. You might be able to release the Freon by sticking a pin in the hose and release the gas slowly. Don’t quote me, because I’m a dimwit when it comes to this stuff. Good luck