When you turn the lights on, they adjust from bottom to top (max) and then down to a pre determined level point, from then on when you dip or raise the front of the car, the lights will auto level. This is why people with auto leveling lights dont have the usual load switch in the car. I.e. 1, 2, 3, 4, 5.. In my previous cars, if you had a heavy load in the back (mother in law) then you`d alter the load level switch. with ours, you dont need it.

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X5 3.0D 2003
Mods:
Webasto telestart remote kit
Aluminium running boards
Tv in motion & Aux input lead, Ice>ink to Ipod 3g.
DVD rear headrest screens and dvd sytem integrated in to main tv system via aux lead (watch tv or dvd in front and back)
Homelink Gate Opener, Chrome Grille Kit, chrome tailgate handle, Chrome Guage Rings, Tunit V-CR 086
Standard:
Bluetooth, comms pack, sat nav, sports pack, sports seats, dimming mirror, electric folding mirrors, memory seats, heated seats.