Radio Locked up????? - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 09-27-2004, 02:26 PM Thread Starter
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Radio Locked up?????

I bought a used radio for my 87 420sel, after the installation all I get across my radio display is
-- -- -- -- Ive tried unhooking the battery, nothing works, what do I have to do to get this thing working????
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post #2 of 3 (permalink) Old 09-27-2004, 03:59 PM
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RE: Radio Locked up?????

If it is an early model (pre-88) Becker, then there's a key that resets the radio. The key is not widely available, but a MB repair shop, like the dealer, should be able to reset the radio. Newer Becker units have a anti-theft CODE number that is entered into the unit to reactivate a radio that has been disconnected from power.
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post #3 of 3 (permalink) Old 09-28-2004, 12:29 AM
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RE: Radio Locked up?????

this happens whenever you enter the wrong code 3 times.

you have to keep the ignition "ON" for 8 hours... or remove the radio and power it up.

after 8 hours, the word "C O D E" will come out.

make sure you enter the right code.

if you don't know the "radio code", ask me. i can check from my database, but i need your serial number.
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