Autotecnica TY1321008 Headlight Level Sensor - Rear Right

Headlight Level Sensor for Lexus and Toyota

The Autotecnica TY1321008 headlight level sensor is a replacement electrical component for vehicles equipped with rear-right leveling control. It is built for Lexus GX470 and Toyota 4Runner applications where the suspension or body height signal is used to maintain proper headlamp aim.

• Fits 2004-2009 Lexus GX470, rear right.
• Fits 2004-2009 Toyota 4Runner, rear right, with air suspension.
• Fits 2003 Lexus GX470, rear right, production date from 11/2002.
• Fits 2003 Toyota 4Runner, rear right, production date from 11/2002.

Key Features

• Replacement headlight level sensor for leveling-system input.
• Direct-fit application for rear-right mounting locations listed in the fitment data.
• Autotecnica aftermarket part number TY1321008.
• Cross-references Arnott Industries RH-3771 and Standard Ignition LSH115 for the same application.

Detailed Description

Autotecnica TY1321008 is an aftermarket headlight level sensor for Lexus GX470 and Toyota 4Runner models that use automatic headlamp leveling. The sensor reads vehicle height or suspension position and sends that information to the lighting system so beam aim can stay within the intended range. This part number, TY1321008, is listed for rear-right applications, including 4Runner models with air suspension and 2003 production starting from 11/2002.

Autotecnica supplies replacement parts across multiple vehicle systems and manufactures to ISO/TS 16949 quality management standards. For buyers replacing a worn or inaccurate leveling sensor on a Lexus GX470 or Toyota 4Runner, TY1321008 provides a direct aftermarket option without needing to search for a genuine OE component.

What It Is Used For

• Correcting headlamp aim when the leveling sensor signal is inaccurate.
• Replacing a failed sensor that triggers leveling-system faults.
• Restoring proper lighting response after suspension-height changes.
• Addressing uneven or inconsistent headlight beam height.

Installation Notes and Tips

Verify the rear-right position and production date before ordering, especially on 2003 Lexus GX470 and 2003 Toyota 4Runner applications built from 11/2002. Confirm whether the vehicle has air suspension where noted in the fitment data. Compare the original connector and mounting layout to the removed sensor before installation.

Quality Assurance

Autotecnica manufactures this part under ISO/TS 16949 quality management system specifications. The TY1321008 is covered by a two-year, unlimited-mileage warranty.