2010 Mercedes ML-Class Owner's Manual - Page 259

Driving instructions Avoid riding the brakes, thus overheating the vehicle and trailer brakes (if so equipped). RIf 257 G Warning! RDuring a passing maneuver extreme care must be exercised since your vehicle with a trailer will require additional passing distance ahead than when driving without a trailer. Because your vehicle and trailer is longer than your vehicle alone, you will also need to go much farther ahead of the passed vehicle before you can return to your lane. X X Decoupling a trailer G Warning! Vehicles with air suspension program: While you are coupling or decoupling a trailer, make sure nobody locks or unlocks the vehicle and/ or opens or closes doors or the tailgate. The vehicle's level could change and you could endanger yourself and/or others as a result. Make sure that you do not operate the ADS switch or the vehicle level control system when coupling/decoupling the trailer. X Disconnect all electrical plug connectors. Decouple the trailer. X Make sure that the trailer coupling is free of load. X Turn off the engine (Y page 108). Driving abroad If you plan to drive the vehicle outside the U.S. or Canada, you should request dealer network information for your destination from any authorized Mercedes-Benz Center. Control and operation of radio transmitter Safety notes G Warning! Please do not forget that your primary responsibility is to drive the vehicle. A driver's attention to the road must always be his/her primary focus when driving. For your safety and the safety of others, we recommend that you pull over to a safe location and stop before placing or taking a telephone call. Make sure the automatic transmission is in park position P (Y page 110). X Engage the parking brake for the vehicle (Y page 107). X Start the engine (Y page 103). X Close all doors and the tailgate. X Engage the parking brake for the trailer. Z Operation the engine coolant rises to an extremely high temperature when the air conditioning is on, turn off the air conditioning system. Engine coolant heat can be additionally vented by opening the windows, switching the climate control fan speed to high and setting the temperature control to the maximum. Vehicles with air suspension program: As soon as you disconnect the electrical connection between the trailer and the vehicle, the vehicle will lower. To help avoid personal injury, make sure no one is near the wheel housing or underneath the vehicle before the electrical connection is disconnected. When you decouple the trailer, the vehicle is temporarily raised because the springs are relieved of load. Be especially careful during this process, as you could otherwise injure yourself and/or others. Make sure that any persons remaining in the vehicle do not press the switches for vehicle level control or the ADS.