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What is the reason for the sudden loss of cooling in the BMW 530's air conditioning?

2 Answers

RemingtonLee

07/25/25 6:41am

BMW 530 air conditioning suddenly not cooling may be due to air conditioning failure. The following are specific reasons and solutions: 1. Specific reason: Too much refrigerant can cause insufficient cooling. There is a certain requirement for the proportion of refrigerant volume in the air conditioning system. If the proportion is too high, it will affect the heat dissipation, that is, more heat dissipation means more cooling capacity; conversely, less heat dissipation means less cooling capacity. Similarly, if too much cooling oil is added during maintenance, it will also reduce the heat dissipation of the refrigeration system. 2. Solution: If no bubbles can be seen in the sight glass when the car air conditioning is running, and there are no bubbles after the compressor stops, it is definitely due to too much refrigerant. Simply pour out some of the refrigerant.

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SanMarcus

08/10/25 6:16pm

My 530's A/C wasn't cooling last time either, a pretty common issue. It might be refrigerant leakage, just like a tire losing pressure – insufficient pressure leads to poor cooling. Compressor failures are also frequent; I've heard BMW compressors are decent quality but age quickly. If the fan isn't spinning or the condenser is clogged, poor heat dissipation affects cooling. I suggest first popping the hood to check if the fan is running, or inspecting the fuse box. Don't randomly top up refrigerant yourself – you might clog the system and make it worse. It's best to visit a BMW specialist shop; their diagnostics are quick. Sudden A/C failure impacts driving comfort, especially on summer highways where cabin temps rise dangerously fast. Regular maintenance checks on A/C components can prevent these issues.

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