2011 Mercedes GL-Class Owner's Manual - Page 192

190 Driving systems The individual vehicle levels differ from highway level as follows: R+2.3 R+/-0 Driving and parking in (+ 60 mm) in raised level in (+/-0 mm) in highway level26 R-0.6 in (-15 mm) in high-speed level Raised level Only select raised level if this is appropriate for the road conditions. Otherwise, fuel consumption increases and handling may be affected. Your selection remains stored even if you remove the key from the ignition lock. Once the raised level has been reached, you will see a message in the multifunction display, for example: If you have not previously selected the offroad menu (Y page 220) in the on-board computer, the message disappears after about five seconds. Highway/high-speed level ! Make sure that there is enough ground clearance when the vehicle is being lowered. It could otherwise hit the ground, damaging the underbody. X X Start the engine. Press button :. The vehicle rises to raised level. X X If indicator lamp ; is not lit: While the adjustment is taking place, a message appears in the multifunction display, e.g.: Start the engine. Press button :. The vehicle adjusts to highway level. If indicator lamp ; is lit: While the adjustment is taking place, a message appears in the multifunction display, e.g.: If you press the V, U, & or * button on the multifunction steering wheel, the message will disappear. 26 Ground clearance: 8.5 in (217 mm).