The workshop manual for the Vehicle Dynamic Suspension is a good read, thanks. It refers to a High Speed mode where the suspension is dropped when it detects 100 MPH. Does anyone know what year this feature was introduced?
High Speed Mode
In later software a high speed mode is introduced. High speed mode is a non-selectable, automatic mode which lowers the vehicle
height by 20 mm to improve vehicle handling. This feature is fully automated and is 'invisible' to the driver.
If the vehicle speed exceeds 100 mph (160 km/h) for more than 5 seconds, the air suspension control module initiates the high
speed mode. When the vehicle speed reduces to less than 80 mph (130 km/h) for more than 30 seconds, the vehicle returns to
'on-road' height. This function is cancelled if a trailer is connected to the trailer socket.
The thought of an LR4 on the autobahn is utterly terrifying.