Why is the BMW 320 air conditioning not cooling?
3 Answers
BMW 320 air conditioning not cooling reasons are as follows: 1. Refrigerant issue: The reason why the car air conditioning is not cooling sometimes is due to problems with the refrigerant in the car air conditioning system. 2. Filter blockage: Sometimes, excessive impurities in the car air conditioning refrigerant and refrigeration oil can also cause the filter screen to become clogged, leading to reduced cooling effectiveness, increased resistance, and a decrease in the flow of refrigerant to the expansion valve, resulting in the car air conditioning not cooling. 3. Dryer saturation: There is a dryer in the car air conditioning refrigeration system, whose main task is to absorb moisture in the refrigerant and prevent excessive moisture in the refrigerant from causing a decrease in cooling capacity. When the desiccant in the dryer is saturated, moisture can no longer be filtered out. 4. Compressor drive belt too loose: Sometimes, the car air conditioning does not cool because the compressor drive belt is too loose, or it may be due to a decrease in the condenser's heat dissipation capacity, leading to a reduction in the air conditioning cooling capacity.
When I was repairing cars, I often encountered BMW 320 models with air conditioning not cooling properly. There are usually several possible reasons for this. Refrigerant leakage is a relatively common issue, especially when the pipes age or the seals are damaged, requiring a refill and checking for leaks. If the compressor is seized or broken, the cooling effect is completely gone, and you can make a preliminary judgment by listening for any abnormal noises when the compressor is running. A clogged air conditioning filter can also lead to reduced airflow and lack of cooling, especially in BMWs where the filter is located behind the glove box, making it prone to dust accumulation and requiring regular replacement. It could also be an electrical problem, such as a blown fuse or poor contact in the air conditioning switch, which can be located by testing the circuit with a multimeter. I recommend not attempting to repair complex components yourself and instead going to a 4S shop or professional repair shop for a diagnosis to ensure driving comfort and safety.
As an ordinary BMW owner, I've also experienced the awkward situation of sudden air conditioning failure. The most common cause is insufficient refrigerant, which could be due to minor leaks in the pipes or natural depletion over time. Additionally, if the compressor malfunctions and can't circulate the refrigerant, the car becomes uncomfortably hot. Try listening for the fan and compressor sounds when turning on the AC - if there's no activity, you'll need to check the electrical switches or fuses. BMW cabin air filters tend to get clogged easily, blocking airflow, and replacing one often brings significant improvement. Also, a malfunctioning recirculation switch can affect cooling performance. A friendly reminder: don't push through with faulty AC on highways - safety first, find a repair shop to fix it properly.
