2011 Mercedes GL-Class Owner's Manual - Page 213
2011 Mercedes GL-Class Manual
Page 213 highlights
Towing a trailer ROn 211 long and steep gradients that are difficult to drive down in shift range 1, switch to the off-road drive program or engage the LOW GEAR off-road gear. RWhen driving downhill, shift to a lower gear to utilize the engine's braking effect. Avoid continuous brake application as this may overheat the vehicle brakes and, if installed, the trailer brakes. RIf the coolant temperature increases dramatically while the air-conditioning system is switched on, switch off the airconditioning system. Coolant heat can additionally be dissipated by opening the windows and by setting the blower fan and the interior temperature to maximum. RWhen overtaking, pay particular attention to the extended length of your vehicle/ trailer combination. Due to the length of your vehicle/trailer combination, you will have to travel an additional distance beyond the vehicle you are overtaking before returning to the previous lane. X X Close all doors and the tailgate. Apply the trailer's parking brake. G Warning! 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. X Detach the trailer cable and decouple the trailer. X Detach the trailer cable and decouple the trailer. X Switch off the engine. Decoupling a trailer G Warning! 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 button or the vehicle level control system when coupling/decoupling the trailer. X Permissible trailer load and drawbar noseweight Weight specifications The Gross Trailer Weight (GTW) is the combined weight of the trailer together with the cargo and equipment loaded on the trailer. Permissible gross weight: 7500 lb (3402 kg). The permissible Trailer drawbar Weight Rating (TWR) is the maximum weight permitted on the trailer drawbar: 600 lb (272 kg) limit for Mercedes-Benz-approved trailer couplings. Make sure that the automatic transmission is set to position P. X Apply the vehicle's parking brake. X Start the engine. Loading a trailer RWhen loading a trailer, please note that neither the permissible gross trailer weight nor the permissible Gross Vehicle Weight Z Driving and parking