2011 Mercedes S-Class Owner's Manual - Page 246

244 X Rear Seat Entertainment System Insert new batteries. Observe the polarity marking on the batteries and in the battery compartment when doing so. Left-hand battery: the positive pole (+) must face upwards. Right-hand battery: the positive pole (+) must face downwards. X To close the battery compartment: first place battery compartment cover = into the battery compartment with retaining lugs ? and allow lug ; to clip into place. Right-hand battery: the positive pole (+) must face downwards. X To close the battery compartment: press the battery compartment lid downwards until it clips into place. If the batteries have been inserted correctly, the indicator lamp will light up green when the headphones are switched on. COMAND In the wireless headphones The battery compartment cover is located on the left headphone. Basic functions Operating with headphones i Vehicles intended for sale in the USA are equipped with cordless headphones. Corded headphones are available for the Canadian market and other markets. You can use the cordless headphones supplied and/or up to two sets of corded headphones connected to the corresponding jack of the rear-compartment screens (Y page 137). Information on: Rswitching the cordless headphones on/off Radjusting the volume of the headphones Rselecting a screen for the headphones can be found in the "cordless headphones" section (Y page 140). Using the main loudspeakers This function is available in conjunction with COMAND. You can use the vehicle loudspeakers to listen to a disc inserted in the rearcompartment drive. To do so, at least one of the rear-compartment screens must be set to disc mode. : Battery compartment cover The wireless headphones contain 2 type AAA 1.5 V batteries. X To open the battery compartment: fold the battery compartment cover : upwards. When doing so, hold the left headphone as shown to prevent the inserted batteries from falling out. X Remove the discharged batteries from the compartment. X Insert new batteries. Observe the polarity marking on the batteries and in the battery compartment when doing so. Left-hand battery: the positive pole (+) must face upwards.