What Causes Intermittent Air Conditioning Failure in BMW 5 Series?

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BMW 5 Series air conditioning intermittent cooling failure may be caused by refrigerant leakage, internal damage to the air conditioning pump, or excessively dirty condenser fins. Refrigerant Leakage: Prolonged use of car air conditioning can deplete the refrigerant, leading to insufficient cooling and affecting the air conditioning performance. Automotive air conditioning refrigerant leakage. Once the refrigerant leaks and is depleted, both the internal and external units of the car's air conditioning system will operate normally, but there will be no cooling effect, resulting in the air conditioning not cooling. Solution: Inspect the leaking components and add refrigerant along with fluorescent dye. Internal Damage to Air Conditioning Pump: This prevents the cooling effect from starting, and a damaged air conditioning pump usually produces abnormal noises. Solution: Inspect and replace the air conditioning pump. Excessively Dirty Condenser Fins: This causes the air conditioning system's pressure and temperature to rise too high. To protect the system, the air conditioning pump stops working, resulting in no cooling. Solution: Use a high-pressure water gun to clean the condenser fins, then dry them with a high-pressure air gun.