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What is the reason for the BMW 530le air conditioner not cooling?

2 Answers

DelMatteo

07/24/25 12:09am

BMW 530le air conditioner not cooling is caused by aging and loose belts. Reasons for not cooling: Aging and loose belts. The solution is: add refrigerant from the low-pressure side, release some refrigerant from the low-pressure side maintenance port of the air conditioning system, tighten the air conditioning compressor drive belt, and replace with qualified refrigerant and frozen oil. Air conditioning maintenance: Check the compressor belt. If the surface of the belt and the contact side of the pulley groove are shiny, and there is a "squeaking" noise when starting the air conditioner, it indicates that the belt is severely slipping, and the belt and pulley should be replaced; if the belt is too loose, it should be adjusted, otherwise it is easy to cause poor cooling of the air conditioning system.

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SanChristopher

08/10/25 7:57pm

When I encounter air conditioning issues, I like to figure them out myself. For the BMW 530le, the most common reason for the air conditioning not cooling could be insufficient refrigerant, which tends to leak over time; or a faulty compressor, which drives the cooling system; or an issue with the electronic control unit. The 530le is a hybrid, so electrical system problems can directly affect the air conditioning. Driving without air conditioning in the summer is unbearable. I think first check if the air filter is dirty and blocking airflow—if so, replacing it can help. If that doesn’t work, it’s best to visit a dealership to test the refrigerant levels and voltage with professional tools. Regular maintenance of the air conditioning system can prevent these issues—don’t wait until summer arrives to regret it.

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