Generic Rear Suspension Height Adjustment Sensor for Infiniti QX56/QX80, Nissan Armada — OEM Fit, Direct Replacement 538201LA2A

If your vehicle shows uneven ride height, warning lights, or an unstable rear suspension response, a worn or failing height sensor is often the cause. This replacement sensor is built to match OEM dimensions and electrical interfaces so it installs like the original part (replaces 53820-1LA2A / 538201LA2A). It’s intended to plug into factory mounting points and restore precise rear-axle height feedback to the vehicle’s air suspension or leveling system.

How does this sensor restore proper suspension behavior?

The sensor measures rear-axle position and sends that data to the vehicle’s suspension control module. When the module receives accurate height readings, it adjusts compression, air springs, or ride-level actuators more reliably, helping prevent uneven stance or persistent warning lights.

• Provides calibrated position readings to the suspension ECU
• Matches OEM electrical connector and mounting points
• Reduces false height errors and unnecessary compressor operation

Will this part fit my Infiniti or Nissan without modifications?

Yes — it’s made to OEM fitment specifications for listed model years and replaces the factory part numbers. No cutting or splicing should be required when installed on compatible vehicles.

• Compatible models: Infiniti QX56 2011–2013, QX80 2014–2018, Nissan Armada 2017–2018
• Direct replacement for 53820-1LA2A / 538201LA2A
• Same mounting holes and connector type as original sensor

What should I expect during installation and testing?

Installation follows the original sensor’s footprint: unbolt the old sensor link, disconnect its electrical connector, fit the new unit, and reconnect. After installation, follow the vehicle’s diagnostics or relearn procedures to ensure the suspension control module recognizes the new sensor readings.

• Simple bolt-on swap using factory hardware locations
• Typical install time under an hour for experienced technicians
• Run a suspension self-test or alignment check after installation

What are the product quality and support details?

This sensor is manufactured to meet or exceed typical OEM standards for durability and electrical performance. It arrives with a one-year warranty and customer support for fitment or installation questions.

• Constructed for stable long-term operation in underbody environments
• One-year warranty plus friendly returns and support
• Customer service response target within 12 hours

Who is this for? This rear suspension height adjustment sensor is aimed at owners and technicians working on Infiniti QX56 (2011–2013), QX80 (2014–2018) and Nissan Armada (2017–2018) vehicles who need a reliable, direct-fit replacement for a failing factory sensor. It’s suitable for DIY mechanics with basic suspension experience, independent repair shops, and fleet maintenance teams seeking an OEM-dimension replacement part that restores accurate ride-height feedback and helps eliminate height-related dash warnings or uneven rear stance.