Four Seasons 73691 HVAC Blend Door Actuator - Left, Lower or Main

HVAC Blend Door Actuator for Lexus and Toyota

Restore proper cabin temperature control with the Four Seasons 73691 HVAC blend door actuator. This HVAC air door actuator uses a gear-style door linkage and a 5-terminal pin layout to help control air distribution in the heating and air conditioning system.

Compatible with select Lexus ES, NX, RX, and Toyota Camry, RAV4, Venza, and Avalon applications, Four Seasons 73691 is built for direct-fit replacement use where the original actuator has failed or become inconsistent.

Key Features

• Four Seasons HVAC blend door actuator, part number 73691
• Gear-style door linkage for HVAC air door control
• 5 terminal pins
• 4 mounting ears for secure installation
• Direct replacement for select Lexus and Toyota HVAC systems
• Cross-reference part number: 871060E120

Detailed Description

The Four Seasons 73691 blend door actuator is engineered for HVAC temperature and airflow control in select Lexus and Toyota vehicles. It is used in systems that direct air through the blend door, helping regulate cabin comfort by moving the HVAC door to the proper position. This part number 73691 is listed for multiple left, lower, and main positions depending on application, including Lexus ES250, ES300h, ES350, NX250, NX350, NX350h, NX450h+, RX350, RX350h, RX450h+, RX500h, and Toyota Camry, RAV4, RAV4 Prime, Venza, and Avalon.

Four Seasons states that its mobile A/C products are engineered and tested for long service life, drawing on more than 50 years of experience in mobile air conditioning. For buyers searching for a Lexus RX350 blend door actuator, Toyota Camry HVAC actuator, or Toyota RAV4 Prime air door actuator, this unit provides a direct replacement option for the listed applications.

Common Problems This Part Can Address

• Inconsistent cabin temperature from the HVAC vents
• Air stuck on hot or cold due to blend door control failure
• Clicking or ticking noises from behind the dash
• Loss of proper airflow direction or temperature mixing
• HVAC actuator response issues in select Lexus and Toyota models

Installation Notes and Tips

Verify the exact vehicle year, model, and actuator position before ordering. This part is listed for left, lower, main, and No. 2 positions depending on the application, so match the original unit carefully. Confirm the connector style, terminal count, and mounting ear layout against the removed actuator before installation. After replacement, cycle the ignition and HVAC controls to allow the system to relearn actuator position if required by the vehicle.

Quality Assurance

Four Seasons backs this HVAC actuator with products engineered and tested for dependable operation. The brand draws on over 50 years of mobile A/C experience, making the 73691 a practical OE-style replacement for select Lexus and Toyota HVAC systems.