2009 Mercedes R-Class Owner's Manual - Page 170

Controls in detail Driving systems i The third available level is the highspeed level that is set automatically. The following is the approximate change in ride height for each of the level settings: Level Raised Highway Highspeed Ride height +1.97 in (50 mm) +/-0 in (0 mm) -0.78 in (-20 mm) Raised level Only select the raised level if appropriate for the driving situation encountered. Otherwise the fuel consumption may increase and/or the handling characteristics of the vehicle may be unfavorable. When the raised level is reached, indicator lamp 2 comes on continuously and the following message appears in the multifunction display: i You can select the raised level at speeds up to 25 mph (40 km/h). At higher speeds, the message n Level Selection Not Permitted appears in the multifunction display. X i The vehicle is lowered to the highspeed level automatically if the vehicle speed is above 70 mph (112 km/h) or if the vehicle speed stays between 60 mph (96 km/h) and 70 mph (112 km/h) for approximately 20 seconds. i The highspeed level is not available when towing a trailer. For more information on towing a trailer, see "Trailer towing" (Y page 283). i Obey local speed limits. Use prudent driving speeds appropriate to prevailing conditions. Start the engine. Press switch 1. Indicator lamp 2 flashes. The vehicle adjusts to the raised level. The following message appears in the multifunction display while the level is being set: When indicator lamp 2 is off: X i The messages can be cleared by pressing button æ or ç on the multifunction steering wheel. Highway level ! Keep in mind that on rough or uneven roads, adjusting the vehicle to a lower level may cause the vehicle underbody to come in contact with the road and result in damage to the vehicle underbody. Always make sure the vehicle has sufficient ground clearance before adjusting it to a lower level. X X Close all doors and the tailgate. Start the engine. 168