Volvo S60 air conditioning fails when parked in hot sun, possibly needing blower motor replacement on Volvo S60

Some Volvo S60 owners report experiencing air conditioning failures when parked in the hot sun, which may indicate issues with the blower motor. Signs of a failing blower motor include unusual whirring noises during operation, weak or inconsistent airflow, and in rare cases, a burning plastic odor or smoke from the AC vents, particularly at high fan speeds. Additionally, some owners have encountered continuous blower motor operation even with the ignition off, leading to battery drainage and requiring a jump start or fuse removal. Other reported causes of AC problems include low or overcharged refrigerant, compressor malfunctions, clogged cabin air filters, and dirty condenser or evaporator coils. If the AC fails to cool properly, it may be due to refrigerant leaks, electrical climate control issues, or compressor problems. Furthermore, a dirty pollen filter can negatively affect the ventilation system, causing reduced cooling and airflow while straining the entire AC system. Addressing these potential issues promptly can help diagnose and resolve air conditioning problems in the Volvo S60.