Arnott RH-5265 Headlight Level Sensor - Rear Left

Arnott RH-5265 Headlight Level Sensor

Arnott RH-5265 is a new headlight level sensor for vehicles with rear air suspension leveling control. It measures chassis-to-road distance and sends that input to the ECU so the system can adjust air strut pressure and maintain proper ride height. This replacement is a direct match for rear left applications on select Buick Lucerne and Cadillac DTS models.

Key Features

• New aftermarket ride height sensor for suspension leveling control
• Black connector with oval shape for a factory-style electrical connection
• Male connector and male terminal design
• Standard grade construction for routine replacement service
• Fits rear left position on select 2006-2011 Buick Lucerne and Cadillac DTS models
• Cross-references OE part number 25767365 for the same application

Detailed Description

Arnott RH-5265 is built for vehicles that rely on electronic ride height feedback to manage air suspension operation. When the sensor reports the vehicle’s position, the ECU can command the compressor and air struts to raise or lower the chassis as needed. On a Buick Lucerne or Cadillac DTS, a worn rear left sensor can disrupt that feedback loop and affect suspension leveling performance. Arnott RH-5265 provides a replacement solution for 2006-2011 Buick Lucerne, rear left, and 2006-2011 Cadillac DTS, rear left. The part number RH-5265 is also useful when searching for a rear left headlight level sensor or ride height sensor replacement for these applications.

Common Issues This Part May Address

• Suspension height readings that are no longer accurate
• Uneven vehicle stance at the rear left corner
• Air suspension compressor cycling based on faulty sensor input
• Warning lights or leveling system faults related to ride height feedback
• Sensor damage from road debris, water, salt, or impact exposure

Installation Notes and Tips

Verify rear left placement before installation and compare the connector style, terminal type, and mounting points to the original sensor. Inspect the linkage, wiring, and surrounding suspension components for corrosion or damage before fitting the new unit. After installation, clear any stored suspension codes and confirm that the leveling system responds correctly during vehicle operation.

Quality Assurance

Arnott supplies new aftermarket suspension components engineered for electronic ride height control applications. RH-5265 is a new part built to replace a worn sensor in the rear left position on select Buick Lucerne and Cadillac DTS models.