2010 Mercedes GL-Class Owner's Manual - Page 122
2010 Mercedes GL-Class Manual
Page 122 highlights
120 Transfer case covered by the Mercedes-Benz Limited Warranty. Gear ranges There are two possible settings. HIGH RANGE LOW RANGE Road position for all normal driving situations. (LOW RANGE mode off) Off-road position for traveling on rough terrain. (LOW RANGE mode on) Also use the off-road position when driving onroad on steep gradients, especially when towing a trailer. LOW RANGE acts by raising the engine's gear ratio. The vehicle travels at roughly third the speed compared to when in HIGH RANGE position, leading to an increase in the engine's drive power. Controls in detail ! Because the ESP® operates automatically, the engine and ignition must be shut off (SmartKey in starter switch position 0 or 1 or KEYLESS-GO start/stop button in position 0 or 1) when the parking brake is being tested on a brake test dynamometer. Such testing should be no longer than 10 seconds. Active braking action through the ESP® may otherwise seriously damage the brake system which is not covered by the Mercedes-Benz Limited Warranty. LOW RANGE mode The LOW RANGE mode is available on vehicles with enhanced off-road package. In the following situations you should switch to the LOW RANGE mode: Rduring Rbefore off-road driving driving through water G Warning! Rwhen towing up or down on steep gradients With LOW RANGE selected, the engine's power delivery and the shifting behavior of the automatic transmission are adjusted. Furthermore, the ABS, the ESP®, and the 4-ETS functions especially adapted to offroad travel are activated. For more information on off-road driving, see "Off-road driving" (Y page 262). For information on driving safety systems during LOW RANGE mode, see "Driving safety systems" (Y page 61). Always wait until the procedure of shifting from HIGH RANGE to LOW RANGE - and from LOW RANGE to HIGH RANGE - has been entirely completed. During this procedure do not turn off the engine or shift the automatic transmission into another gear. If you do not wait until the shifting procedure has been entirely completed then it might not be correctly performed. The transfer case might be in neutral, thus interrupting the transfer of power between the engine and the drive axle. The vehicle is then freely movable, even if a gear has been selected, and could unintentionally be set into motion - particularly on up - or downhill grades. This could lead to an accident and cause injury to yourself and others. Please observe related messages appearing in the multifunction display.