2011 Mercedes R-Class Owner's Manual - Page 195

Towing a trailer recognize dangers in time, cause an accident and injure yourself and others. 193 Towing a trailer Notes on towing a trailer Important safety instructions G Warning! Failure to use proper equipment and driving technique can result in a loss of vehicle control when towing a trailer. Improper towing or failure to follow the instructions in this manual can result in vehicle damage and/or serious personal injury. Follow the guidelines below carefully to assure safe trailer operation. Contact an authorized Mercedes-Benz Center should you require an explanation of information contained in this manual. Collision warning If a vehicle is detected in the monitoring range of Blind Spot Assist and you switch on the turn signal, a double warning tone sounds. Red warning lamp : flashes. If the turn signal remains on, detected vehicles are indicated by the flashing of red warning lamp :. There are no further warning tones. Switching on Blind Spot Assist X Make sure that the radar sensor system (Y page 208) and Blind Spot Assist (Y page 210) are activated in the on-board computer. X Turn the key to position 2 in the ignition lock. Warning lamps : light up red in the exterior mirrors for approximately 1.5 seconds and then turn yellow. General information ROnly install an approved trailer coupling on Towing a trailer When you attach a trailer, make sure you have correctly established the electrical connection. This can be accomplished by checking the trailer lighting. In this event, Blind Spot Assist is deactivated. The indicator lamp lights up yellow in the exterior mirrors and the message: Blind Spot Assist Currently Unavailable See Operator's Manual appears in the multifunction display. your vehicle. Further information on availability and on installation is available from any authorized Mercedes-Benz Center. RThe bumpers of your vehicle are not suitable for installing detachable trailer couplings. RDo not install hired trailer couplings or other detachable trailer couplings on the bumpers of your vehicle. RTo reduce the risk of damage to the ball coupling, remove it from the ball coupling recess when not in use. i The indicator lamps in the exterior mirrors can be switched off. To do this, you must deactivate Blind Spot Assist when: Rthe key is in position 2 in the ignition lock. Rthe engine is not running. Rthe electrical connection to the trailer has been established. Coupling up a trailer G Warning! Vehicles with AIRMATIC: 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. Z Driving and parking