28 MAP PILOT owner’s manualSD card copy protectionYour SD card can only be installed on one navigation system.You cannot install the SD card on an additional navigationsystem.If you receive an error message stating that your maps arelocked the first time you install the SD card on your navigationsystem, your card might be corrupted. Contact your Mercedes-Benz dealer.Installing the SD card1 Ensure that the SD card is not locked.2 Insert the SD card into the SD card slot in your vehicle untilit clicks in place.3 Follow the on-screen instructions.Updates• Map and software updates are available at your Mercedes-Benz dealer. In some countries, map and software updatesare available as downloads or SD cards fromwww.garminmappilot.com.cn.• You may be eligible for a free map update. See yourdealership for more information.About the Audio 20 controllerUse the controller in your vehicle to manoeuvre through thenavigation system and make selections.For complete operating instructions, refer to the operator’smanual for your vehicle.Using the Audio 20 controller on the map• Move the controller in eight different directions to move to anoption or pan the map.• Press the controller to make a selection or display the menu.• Rotate the controller clockwise or anticlockwise to move to aselection and zoom in and out on the map.• From the map, press the controller to use menu shortcuts.• Move the controller to rotate the main menu wheel and themap wheel.Volume adjustmentVolume adjustment of navigation announcements is onlypossible during an announcement.