What Causes Refrigerant Leakage in BMW 5 Series Air Conditioning?
2 Answers
BMW 5 Series air conditioning refrigerant leakage is due to damage to the refrigerant pipes. Definition of air conditioning refrigerant pipes: Air conditioning refrigerant pipes refer to the pipelines in the air conditioning system through which the refrigerant flows, connecting heat exchangers, valves, compressors, and other major refrigeration components. Copper pipes are typically used. Function of air conditioning refrigerant pipes: In the automotive air conditioning system, refrigerant pipes are crucial components responsible for transporting the refrigerant. Since the air conditioning system consists of multiple parts, there are multiple refrigerant pipe interfaces. The connections between these interfaces are achieved through interface devices. The refrigerant is a key factor affecting the cooling efficiency of the air conditioning system.
I've been driving a BMW 5 Series for almost five years, and when the AC stops cooling, there's an 80% chance it's due to refrigerant leakage. Common causes include: 1) Aging and hardening of sealing rings at joints leading to gas leaks – plastic components tend to dry out and deform over time; 2) Corrosion perforation in the evaporator or condenser, especially severe in coastal cities with high salt spray; 3) Loose pipe connections not properly tightened, which can happen if technicians are careless during repairs; 4) Vibration damage, such as micro-cracks in pipes caused by bumpy roads. Once refrigerant leaks out, AC efficiency plummets, making summer drives unbearable. It's best to get a pressure check at a reputable shop before each summer, using nitrogen or fluorescent dye to test for leaks. Addressing minor issues early, like replacing a sealing ring, can save you from costly and time-consuming major part replacements later.
