Four Seasons 73621 HVAC Recirculation Door Actuator

HVAC Recirculation Door Actuator for Lexus and Toyota

The Four Seasons 73621 HVAC recirculation door actuator restores control of the air door that directs cabin airflow in the HVAC system. Built with a gear-style door linkage, 4 mounting ears, and a 5-pin terminal layout, it is a direct replacement for select Lexus ES300h, Lexus ES350, and Toyota Avalon applications.

• HVAC air door actuator for recirculation system operation
• Gear door linkage for controlled door movement
• 4 mounting ears for secure installation
• 5 terminal pins for the specified electrical connection
• Fits 2013-2018 Lexus ES300h, auxiliary position
• Fits 2013-2018 Lexus ES350, auxiliary position
• Fits 2013-2014 Toyota Avalon, auxiliary position
• Fits 2013-2015 Toyota Avalon, floor position
• Fits 2017-2018 Toyota Avalon, auxiliary position

Detailed Product Information

Four Seasons 73621 is an HVAC air door actuator engineered for recirculation door control in the cabin climate system. The gear linkage helps move the door through its intended range, while the 4-ear mounting design and 5-pin terminal configuration support the specified OE-style fitment on select Lexus ES300h, Lexus ES350, and Toyota Avalon models. This part cross-references Dorman 604-029 for the same application.

Common HVAC Problems This Part Can Address

• Recirculation door stuck in one position
• Incorrect cabin air routing between fresh and recirculated air
• HVAC mode changes that do not respond properly
• Clicking or binding from a worn actuator gear
• Loss of consistent airflow control in the dash HVAC system

Installation Notes and Tips

Verify the connector style, mounting ear layout, and door linkage before installation. Match the vehicle position exactly: Fits 2013-2018 Lexus ES300h, auxiliary; Fits 2013-2018 Lexus ES350, auxiliary; Fits 2013-2014 Toyota Avalon, auxiliary; Fits 2013-2015 Toyota Avalon, floor; Fits 2017-2018 Toyota Avalon, auxiliary. After installation, cycle the HVAC controls to confirm smooth door movement and proper recirculation operation. The Four Seasons 73621 part number should be matched to the original actuator application before replacement.

Quality Assurance

Four Seasons backs this actuator with more than 50 years of mobile air conditioning experience. The manufacturer states that its products are engineered and tested for years of trouble-free operation, supporting dependable HVAC repair on Lexus and Toyota vehicles.