
LaCrosse air conditioning not cooling reasons are: 1. Lack of refrigerant. 2. Damaged air conditioning flap. 3. Loose drive belt of the car air conditioning compressor. 4. Clogged air filter and filter screen. 5. Water infiltration into the refrigeration system. The following are solutions for sudden air conditioning failure in Buick LaCrosse: 1. Add refrigerant. 2. Replace the air conditioning flap. 3. Clean the air filter and filter screen. The functions of air conditioning are: 1. Filter the air entering the cabin. 2. Absorb moisture from the air. 3. Keep the air clean and prevent bacterial growth. 4. Prevent fogging on the glass. 5. Adjust the cabin temperature.


