A faulty air suspension valve block on a Toyota Land Cruiser (FJ120) can show several signs. The most common is when the vehicle sits unevenly or one corner sags lower than the others, often after being parked overnight. You might also notice that the suspension system doesn’t raise or lower properly, or that it takes much longer than usual to adjust. Sometimes, a warning light for the suspension appears on the dashboard, or the air compressor runs constantly as it tries to keep the system pressurised. You may hear a hissing sound near the valve block, which suggests air is leaking. In some cases, the ride can feel rough or unstable because the system can’t keep the air pressure balanced. If any of these happen, it usually means the valve block is leaking, clogged, or not working correctly and should be checked or replaced.

EQU OEM 48930-60020 (for entire reservoir , this is the valve block attached to this reservoir)