2010 Mercedes GLK-Class Owner's Manual - Page 108

106 Automatic transmission Working on the vehicle G Warning! When working on the vehicle, engage the parking brake and shift the automatic transmission into park position P. Otherwise the vehicle could roll away which could result in an accident and/or serious personal injury. Effect = With this selection you can use the braking effect of the engine. 5 Allows the use of the engine's braking effect when driving Ron steep downgrades Rin Controls in detail mountainous regions Towing a trailer X Runder When you tow a trailer, shift into a lower gear range manually if the automatic transmission hunts between gears on inclines. A lower gear range and reduction of speed reduces the potential to overload or to overheat the engine. For more information on trailer towing, see "Trailer towing" (Y page 246). extreme operating conditions 4 For maximum use of the engine's braking effect on very steep or lengthy downgrades. Automatic shift program Gear ranges With the automatic transmission in drive position D, you can limit or extend the gear range, see "One-touch gearshifting" (Y page 107). The current gear range appears in the multifunction display. Program mode selector switch C Comfort S Sport For comfort driving For sporty driving : Gear range indicator