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Home >> Jaguar >> 2008 >> XJR >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Vehicle Dynamic Suspension (2003.5-09) >> Diagnosis And testing >> Vehicle Dynamic Suspension >> Operating modes >> Notes

Operating modes: Notes

Before it will be possible to verify the customer concern, it will be necessary to understand the modes of the system to establish what the system should and should not do in each mode. The table below should help in understanding the operating modes.

VEHICLE OPERATING CONDITION CHART

Vehicle operating condition Air suspension operating mode Levelling status
Static, parked. No occupant or loading activity for 30 minutes Sleep mode
  • Compressor unpowered
  • Only lowering allowed
Static, parked. Occupant entry and/or loading activity within past 30 minutes Preliminary mode
  • Lifting with reservoir
  • Lowering permitted
  • Compressor unpowered
Static, parked with engine running Stance mode
  • Lifting with reservoir
  • Lowering permitted
  • Compressor unpowered unless reservoir pressure is below a preset minimum and the vehicle is below the compressor activation height
Driving Drive mode
  • Lowering permitted at all speeds
When vehicle speed is below 40 km/h (25 mph): 
  • Lifting with reservoir
  • Compressor unpowered unless reservoir pressure is below a preset minimum and the vehicle is below the compressor activation height
When vehicle speed is above 40 km/h (25 mph): 
  • Compressor powered to lift vehicle and refill reservoir