A malfunctioning AC blower can leave a vehicle’s cabin uncomfortable, regardless of the temperature outside. Symptoms such as weak airflow, unusual noises, or a fan that will not operate often indicate electrical, mechanical, or climate-control problems.
Troubleshooting AC blower issues begins with identifying the specific symptom and checking common causes, including blown fuses, faulty relays, clogged cabin air filters, damaged blower motors, and defective resistors. Accurate diagnosis can prevent unnecessary repairs and restore reliable airflow.
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