OE Quality
60-Day Returns

Four Seasons 73518 HVAC Blend Door Actuator - Main
Overview of Four Seasons Air Door Actuator 73518
The Four Seasons Air Door Actuator 73518 is designed to restore proper HVAC airflow control in select Lexus and Toyota vehicles. This HVAC blend door actuator features a female door linkage and a 5-terminal pin configuration, ensuring precise operation within your vehicle's climate control system.
- Compatible with Lexus HS250h, IS250, IS350, Land Cruiser, LS460, LS600h, and LX570 models
- Female door linkage for secure and accurate fitment
- 5 terminal pins for reliable electrical connection
- Part number 73518 for easy identification and replacement
- Part of the Four Seasons Air Door Actuator product line
Product Line Details: Four Seasons Air Door Actuator
The Four Seasons Air Door Actuator line focuses on HVAC blend door actuators engineered to meet OEM specifications. This product line provides components that control airflow direction and temperature blend within the vehicle’s HVAC system. The 73518 actuator is part of this line, offering compatibility and performance tailored for specific Lexus and Toyota models.
Detailed Product Description
The HVAC blend door actuator 73518 from Four Seasons is engineered with a female door linkage, which ensures a secure mechanical connection to the blend door shaft. The actuator’s 5-terminal pin design supports stable electrical communication with the vehicle’s climate control module. This actuator is essential for regulating the mix of hot and cold air inside the cabin, maintaining comfort and system efficiency. It is specifically designed for use in Lexus HS250h, IS250, IS350, Land Cruiser, LS460, LS600h, and LX570 models, providing a direct replacement that meets factory fit and function requirements.
Common Issues Addressed by This HVAC Blend Door Actuator
- Inconsistent cabin temperature due to blend door malfunction
- HVAC system stuck on one temperature setting
- Unusual noises from the HVAC system blend door area
- Failure of airflow direction control within the HVAC system
- Intermittent or no response from climate control adjustments
Installation Notes and Tips
- Verify vehicle compatibility with Lexus and Toyota models listed before installation
- Disconnect the battery before removing the old actuator to prevent electrical shorts
- Carefully remove the HVAC panel to access the blend door actuator location
- Ensure the female door linkage aligns properly with the blend door shaft
- Test actuator operation before reassembling the dashboard components
Quality Assurance and Warranty
Four Seasons manufactures the 73518 Air Door Actuator to meet or exceed OEM standards for durability and performance. While specific warranty details may vary, Four Seasons typically offers coverage against defects in materials and workmanship. This ensures reliable operation and peace of mind when replacing the HVAC blend door actuator in your Lexus or Toyota vehicle.
| Brand | Four Seasons |
| Part Number | 73518 |
| Position | Air Door Actuator, Main |
| Door Linkage | Female |
| Style | HVAC Air Door Actuator |
| Terminal Pin Qty. | 5 |
This part fits 31 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2017 | Lexus | LS460 | Main | Air Door Actuator |
| 2014 | Lexus | IS250 | N/A | No. 3 |
| 2014 | Lexus | IS350 | N/A | No. 3 |
| 2014 | Lexus | LS460 | Main | Air Door Actuator |
| 2014 | Lexus | LS600h | Main | Air Door Actuator |
| 2013 | Lexus | LS460 | Main | Air Door Actuator |
| 2013 | Lexus | LS600h | Main | Air Door Actuator |
| 2013 | Lexus | LX570 | N/A | To 1/2013 |
| 2013 | Toyota | Land Cruiser | Main | To 1/2013 |
| 2012 | Lexus | HS250h | Right | To 1/30/12 |
| 2012 | Lexus | LS460 | Main | Air Door Actuator |
| 2012 | Lexus | LS600h | Main | Air Door Actuator |
| 2011 | Lexus | HS250h | Right | |
| 2011 | Lexus | LS460 | Main | Air Door Actuator |
| 2011 | Lexus | LS600h | Main | Air Door Actuator |
| 2011 | Lexus | LX570 | N/A | |
| 2011 | Toyota | Land Cruiser | Main | |
| 2010 | Lexus | HS250h | Right | |
| 2010 | Lexus | LS460 | Main | Air Door Actuator |
| 2010 | Lexus | LS600h | Main | Air Door Actuator |
| 2010 | Lexus | LX570 | N/A | |
| 2010 | Toyota | Land Cruiser | Main | |
| 2009 | Lexus | LS460 | Main | Air Door Actuator |
| 2009 | Lexus | LS600h | Main | Air Door Actuator |
| 2009 | Lexus | LX570 | N/A | |
| 2009 | Toyota | Land Cruiser | Main | |
| 2008 | Lexus | LS460 | Main | Air Door Actuator |
| 2008 | Lexus | LS600h | Main | Air Door Actuator |
| 2008 | Lexus | LX570 | N/A | From 11/07 |
| 2008 | Toyota | Land Cruiser | Main | From 11/07 |
| 2007 | Lexus | LS460 | Main | Air Door Actuator |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.