What causes the BMW X3's air conditioning to stop blowing air?

[Tucker]

Air conditioning not blowing air can be attributed to the following three reasons: 1. Blower motor malfunction: The blower motor is the core component responsible for air delivery in a car's AC system. If it's damaged, the AC will inevitably fail to blow air. Blower motor failures may result from overheated internal coils or capacitor damage. You can diagnose this by turning the AC fan speed and airflow to maximum and listening for abnormal sounds. 2. Blocked air ducts: Outside air passes through the cabin air filter before entering the vehicle, which traps airborne particles and can easily become clogged. 3. Control system failure: If the above causes are ruled out, the issue likely lies in the control system. Potential culprits include faulty air blend doors, control switches, or the AC control module.