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You need to gete the radio security code and enter it in. Just call or drop by the dealer and theye can give you the code or enter it. Should be free but your dealer may vary. When you changed the battery and lost power the radio goes into a secure mode just in case it was stolen. The code should be about 4 digets long so its not a big thing to enter. its keyed to your vin number so the d ealer may want to see that as well as your registtration and maybe a drivers licence depending on how paranoid they are.
Hello! When you purchased your Mercedes a card (similar to a bank card), which has the radio code stamped on, should have accompanied your owners manual. If not visit your dealership and they can give you the code. Turn on the radio, punch in the code, and radio will come on. Any time your battery is disconnected, when you power back up the radio code must be re-entered.
Turn on radio - the word SAFE will appear in the display. Press th P.SCAN and RBDS buttons simultaneously and hold them down until "1000" lights up in the display.Release buttons.Do not, under no circumtances, continue holding them down or press them once again. This will cause the radio to consider the number 1000 to be the input code.Use station buttons 1,2,3,and 4 to enter the code number on your Radio Card. Use the button 1 to enter the first number 2 for the second number 3 for the third number and 4 for the last number.Once you have entered the code and it shows on the display,press the P.SCAN and RBDS buttons down again simultaneously and hold them down until the word SAFE appears in the display.Release buttons. Soon afterwards a frequency will be displayed.
hello I',m an M.B. tech. These becker radios can be difficult if the wrong code is entered( i believe 3 times ina row) and go into security lock. if you enter code and it does not work remove radio and get serial number of and call dealer. The way you enter 4 digit code is by entering the number with the station program keys on the top of the face plate . then after code is entered you press the * symbol and it should start working. There is a becker web site that can also assist you with radio problems it is www.beckerautosound.com . good luck
it may be that the engine control unit may need to be checked for fault codes first.on some cars the control may need reprogramming to over come the acceleration problem after battery goin totally flat.