BMW X3 A/C not cooling properly, possible evaporator or O-ring issue on BMW X3

Some BMW X3 owners report experiencing air conditioning issues, particularly when the system is not cooling properly, which may be due to problems with the evaporator or O-ring seals. Common causes of these AC problems include low or overcharged refrigerant, compressor malfunctions, clogged cabin air filters, dirty condenser or evaporator coils, and faulty fuses or relays. Additionally, an evaporator leak can lead to refrigerant loss, significantly impacting cooling efficiency. To diagnose refrigerant leaks, some owners use fluorescent dye injected into the AC system, which helps identify the source of the leak under UV light. While DIY repairs for evaporator leaks may be attempted, it is important for owners to assess whether they have the necessary skills and equipment for the repair. For those lacking experience in AC system repairs, seeking professional assistance is advisable to ensure accurate diagnosis and effective resolution of the issue.