Arnott RH-3570 Headlight Level Sensor - Rear Left

Arnott RH-3570 Headlight Level Sensor

Arnott RH-3570 is a new rear left headlight level sensor for select Ford Expedition and Lincoln Navigator models. It monitors chassis-to-road distance and sends that information to the ECU so the air suspension system can adjust ride height as needed.

Key Features

• New standard-grade headlight level sensor
• Black connector with oval shape
• 3-pin male terminal design
• 1 male connector
• Rear left position application
• Direct replacement for OE-style ride height sensing

Product Details

This Arnott RH-3570 sensor is used in air suspension systems that rely on ride height feedback to maintain proper vehicle leveling. By reporting suspension position to the ECU, it helps the system command the compressor and air struts to raise or lower the vehicle as needed. It cross-references Ford 8L1Z5A967B for the same application. Fits 2007-2014 Ford Expedition, rear left. Fits 2007-2014 Lincoln Navigator, rear left. The RH-3570 is a practical replacement when the original sensor has worn out or been exposed to road debris, water, salt, or impact damage.

Common Issues This Part Can Address

• Incorrect vehicle ride height readings
• Air suspension leveling faults
• Suspension warning messages related to height sensing
• Uneven rear suspension stance
• Sensor failure from corrosion or road damage

Installation Notes and Tips

Verify rear left placement before installation and compare the connector style, terminal count, and mounting points to the original sensor. Inspect the surrounding linkage and wiring for corrosion, broken clips, or impact damage before fitting the new unit. After installation, clear any stored suspension codes and confirm the system levels correctly.

Quality Assurance

Arnott supplies aftermarket suspension components built for direct-fit replacement use, and this RH-3570 sensor is supplied new for service replacement on the listed Ford Expedition and Lincoln Navigator applications.