Product Overview The Rear Left Ride Height Sensor RQH500052 is an OE-grade electronic suspension component for for Land Rover Discovery 3 / LR3 (L319) and Range Rover Sport (L320) from 2005 to 2009 . This sensor measures the distance between the vehicle chassis and the rear left suspension, continuously monitoring ride height and sending signals to the suspension control module, which then adjusts air springs, dampers, and headlight levelling systems . It is a critical