2008 Mercedes R-Class Owner's Manual - Page 245

Controls in detail Power windows Synchronizing the door windows The door windows must be synchronized after the battery was disconnected if the door windows cannot be fully opened (Express-open) or closed (Express-close) Summer opening feature If the weather is warm, you can ventilate the vehicle before driving off by simultaneously opening the door windows opening the hinged quarter windows* opening the tilt/sliding sunroof* (or the tilt/sliding panel*) switching on the seat ventilation* for the driver's seat Aim transmitter eye of the SmartKey or SmartKey with KEYLESS-GO* at the driver's outside door handle. The SmartKey or SmartKey with KEYLESS-GO* must be in close proximity to the driver's outside door handle. Vehicles without tilt/sliding panel Press and hold button Πon the SmartKey or SmartKey with KEYLESS-GO* until the windows and the tilt/sliding sunroof* have reached the desired position. Release button Πon the SmartKey or SmartKey with KEYLESS-GO* to interrupt the opening procedure. i Each door window must be synchronized separately. Close all doors. Switch on the ignition ( page 39). Pull and hold switch 1, 2, 3, or 4 ( page 242). Once a door window is closed completely, hold the respective switch for approximately 3 seconds. The door window is synchronized. 244