LR045251 For Land Rover Discovery LR3 4.0 4.2 4.4L Air Compressor Pump & Relay. The situations you need to replace the suspension compressor. Vehicles air suspension rises slowly, noisily, or fails to rise at all. The fault code shows”C1A20″;”C1A1364″;”C50″;”C1A20-64″. These errors shows”Suspension error only normal height available”;”Suspension fault; pressure not…