How the suspension system is evaluated
Air springs, reservoirs, valve blocks, compressors, height sensors and electronic controls work together, but the fitted hardware varies by chassis and options. A vehicle that sinks after parking may have an air leak; a vehicle that cannot rise may instead have a supply, venting, control or sensor problem. Record corner heights after shutdown and at repeat intervals. Read chassis faults and compare actual height readings with commands. Check for leakage and compressor overheating before replacing major components.
Manufacturer-specific considerations
Land Rover bulletin LTB00793NAS2 documents C1A13-64 on certain 2014–2016 vehicles where the suspension supply unit cannot vent because of an exhaust valve or silencer issue. LTB00604NAS5 describes a different front air-spring/damper hydraulic leak on certain Range Rover and Range Rover Sport vehicles. Neither bulletin should be applied without VIN and equipment checks.
Repair confirmation
After repair, verify commanded raise/lower operation, stable parked height and any required calibration. Never work beneath an air-suspended vehicle without proper support.
A Range Rover that sits low at one corner after parking may have an air leak, while a vehicle that remains low on all corners may be reacting to compressor, pressure, sensor or control faults.
How the concern should be diagnosed
Check which corners change height, whether the compressor runs excessively, stored chassis codes, reservoir pressure and leaks at bags, lines and valve blocks. Do not replace the compressor before testing for leaks that may have overworked it.
For service in Hickory, NC, contact Mich’s Foreign Cars with the exact year, engine, warning message, symptom history and any prior repairs. Our team can discuss the appropriate next step and confirm service availability.
If you are experiencing this issue, contact Mich’s Foreign Cars in Hickory, NC at 828-324-6012. Provide the model, year, engine, warning text and when the symptoms occur so the service team can discuss an appropriate diagnostic visit.