Toyota Sienna whining fan noise during turns and water dripping sound from dashboard with A/C and fan on on Toyota Sienna

Some Toyota Sienna owners report experiencing a whining fan noise during turns, which may be caused by a faulty bushing in the blower motor, a common issue in these vans. Additionally, if the whining noise occurs only during acceleration and increases in pitch with RPM, it could indicate worn-out bearings or a worn clutch. Furthermore, some owners notice a water dripping sound from the dashboard when the A/C and fan are on, suggesting potential issues with the HVAC system, such as clogs or blockages that lead to water accumulation. To address these concerns, it is recommended to inspect the blower motor for faulty bushings, check the bearings and clutch for wear, and examine the HVAC system for blockages or leaks. If these issues persist, consulting a qualified mechanic or Toyota service center is advisable for proper diagnosis and resolution.