2010 Mercedes GL-Class Owner's Manual - Page 126

124 Instrument cluster menu, see the "Controls in detail" section (Y page 131). If you must continue to drive, do so with added caution. Contact an authorized MercedesBenz Center as soon as possible. Controls in detail Example illustration A Center differential completely locked ! If the differential locks have been manually engaged, the tires will scuff on the road surface when cornering because the differences between the individual wheel rotation speeds will not be compensated for. i The differential locks are reset to AUTO mode after the ignition has been switched off for longer than 10 seconds. Instrument cluster Introduction For a full view illustration of the instrument cluster, see "Instrument cluster" (Y page 28). : To dim instrument cluster illumination ; Reset button = To brighten instrument cluster illumination For information on changing the instrument cluster settings, e.g. the language, see (Y page 133). Activating the instrument cluster The instrument cluster is activated when you Ropen the driver's door on the ignition button :, ; or = Rswitch Rpress G Warning! No messages will be displayed if either the instrument cluster or the multifunction display is inoperative. As a result, you will not be able to see information about your driving conditions, such as Rspeed Routside i Opening the driver's door or pressing button :, ; or = without switching on the ignition activates the instrument cluster illumination only for 30 seconds. Adjusting the instrument cluster illumination X temperature lamps messages Rwarning/indicator Rmalfunction/warning Rfailure of any systems Driving characteristics may be impaired. To brighten illumination: Press and hold button = until the desired level of illumination is reached. X To dim illumination: Press and hold button : until the desired level of illumination is reached.