Four Seasons 73693 HVAC Mode Door Actuator - Auxiliary

HVAC Mode Door Actuator for Lexus LS460 and LS600h

Restore proper cabin air distribution with this Four Seasons HVAC mode door actuator, part number 73693. It is built for the auxiliary mode door position on select Lexus LS460 and LS600h models, helping the climate control system direct airflow where it is commanded.

• HVAC air door actuator for mode door control
• Arm-style door linkage for the specified application
• 3 mounting ears for secure installation
• 5-terminal pin electrical connection
• Direct-fit application for Lexus LS460 and Lexus LS600h auxiliary No. 3 locations

Application Details

Four Seasons 73693 is an HVAC mode door actuator engineered for precise air door movement in the climate control system. It is used in the auxiliary position on 2007-2009 Lexus LS460 and 2008-2009 Lexus LS600h models, where the actuator helps control airflow routing between vents, defrost, and other cabin outlets. This part cross-references DA1631 for the same application.

Compatible With 2007-2009 Lexus LS460, Auxiliary No. 3. Compatible With 2008-2009 Lexus LS600h, Auxiliary No. 3. If you are searching for a Lexus LS460 HVAC mode door actuator 73693 or a Lexus LS600h auxiliary air door actuator, this part matches the listed fitment.

What It Helps Correct

• Airflow stuck on one vent setting
• Inconsistent switching between dash, floor, and defrost outlets
• Clicking or binding from a worn HVAC actuator
• Loss of proper auxiliary air door movement
• Climate control response problems tied to the mode door

Installation Notes and Tips

Verify the auxiliary No. 3 location before ordering and compare the connector, mounting ear layout, and linkage style to the original unit. The 5-pin terminal design and arm linkage should match the vehicle’s existing actuator configuration. After installation, cycle the HVAC controls to confirm smooth door movement and correct airflow routing.

Quality Assurance

Four Seasons states that its mobile A/C products are engineered and tested for long service life, drawing on more than 50 years of air conditioning experience. Part number 73693 is built to support dependable HVAC operation in the specified Lexus applications.