Symptom Chart

SYMPTOM	POSSIBLE MESSAGE	POSSIBLE CAUSES	ACTION
System detects extended mode unnecessarily when lowering	-	Crossed gallery and air spring pipes Incorrect valve block installed to front or rear Damage or blockage in air harness Faulty height sensor	Check air harness, valves and air springs for blockages and/or leaks Check operation of height sensors Where possible, refer to the guided diagnostic routine on the approved diagnostic system. Refer to: AIR SUSPENSION SYSTEM DEPRESSURIZE AND PRESSURIZE , RIDE HEIGHT ADJUSTMENTS .
Vehicle leans/tilts after being left over-night or for some days	-	Leaking air spring (s) Leak from corner valve to gallery Exhaust valve stuck open	Check air harness, valves and air springs for blockages and/or leaks Where possible, refer to the guided diagnostic routine on the approved diagnostic system. Refer to: AIR SUSPENSION SYSTEM DEPRESSURIZE AND PRESSURIZE , RIDE HEIGHT ADJUSTMENTS .
After vehicle left over-night or for some days system regularly indicates "Suspension vehicle raising slowly" when first driving off	Suspension vehicle raising slowly	Leaking air spring (s) Leaking reservoir	Check air harness, valves and air springs for blockages and/or leaks Check operation of height sensors Where possible, refer to the guided diagnostic routine on the approved diagnostic system. Refer to: AIR SUSPENSION SYSTEM DEPRESSURIZE AND PRESSURIZE , RIDE HEIGHT ADJUSTMENTS .
Changes between different ride-heights are not smooth	-	Faulty height sensor	Check air harness, valves and air springs for blockages and/or leaks Check operation of height sensors Where possible, refer to the guided diagnostic routine on the approved diagnostic system. Refer to: AIR SUSPENSION SYSTEM DEPRESSURIZE AND PRESSURIZE , RIDE HEIGHT ADJUSTMENTS .