Automatic leveling system

Hi Guys

I have recently upgraded me trust TD4 Freelander to a TD5 Discovery and WOW now i have a proper 4 X 4.

I have read briefly about the Automatic leveling system but what does the the button on the control panel do with the arrow pointing upwards. I am sure i read it in a downloadable manual that it raised the back suspension by 40 MM however when i sit inside and press it the display lights up for a split second and then i dont notice anything... I have towed a caravan and when i uncoupled it i noticed the suspension auto leveling itself out... hehe quite clever

Can someone explain how this manual button works on the dashboard if possible please...

You have to hold it down for 2 seconds

http://www.landyzone.co.uk/lz/f38/disco-ii-air-suspension-definitive-guide-61211.html

Hi, it will not work if any of the vehicle doors are open.