The sensor on the negative terminalmonitors your vehicles batterycondition.If there is a problem with the sensor,you will see a ‘‘CHECK BATTERYSENSOR’’ message on themultiinformation display. Have thevehicle checked by your dealer.Check the terminals for corrosion (awhite or yellowish powder). Toremove it, cover the terminals with asolution of baking soda and water. Itwill bubble up and turn brown. Whenthis stops, wash it off with plainwater. Dry off the battery with a clothor paper towel. Coat the terminalswith grease to help prevent furthercorrosion.If additional battery maintenance isneeded, see your dealer or aqualified technician.WARNING: Battery posts,terminals, and related accessoriescontain lead and lead compounds.Wash your hands after handling.If you need to connect the battery toa charger, disconnect both cables toprevent damaging your vehicle'selectrical system. Always disconnectthe negative (-) cable first, andreconnect it last.The battery gives off explosivehydrogen gas during normaloperation.A spark or flame can cause thebattery to explode with enoughforce to kill or seriously hurtyou.Wear protective clothing and aface shield, or have a skilledtechnician do the batterymaintenance.If the radio fuse is removed, theaudio system will disable itself. Thenext time you turn on the radio youwill see ‘‘ENTER CODE’’ in thefrequency display. Use the presetbuttons to enter the digit code (seepage 308).Checking the Battery547Maintenance11/08/29 10:08:20 12 ACURA MDX MMC North America Owner's M 50 31STX650 enu