* Refrigerant leak: The coolant that helps your car's air conditioning system cool air is called refrigerant. If the refrigerant leaks, the air conditioning system won't be able to cool the car properly.
* Compressor failure: The compressor is a part of your car's air conditioning system that circulates the refrigerant. If it fails, the refrigerant will not be able to circulate and the car will not cool down.
* Fan failure: The fan in your car's air conditioning system helps circulate the cool air throughout the car. If the fan fails, the cool air will not be able to circulate and the car will not cool down.
A code can also be read and will let you know the exact failure. If the warning light comes on, it's important to have your car's climate control system checked as soon as possible. Driving with a faulty climate control system can be uncomfortable and could lead to further damage to the system.