Question about 1999 Mercedes-Benz M-Class

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I removed my car battery and i need to re enter the password which i don't have

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Check the manuel or in the glove box, and the drivers door jam for a radio code sticker. if that does not work try 0000 and all else fail log on to and they can get the codes for you. There is a fee but it's going to be much less then the dealer. good luck and keep me posted, be glad to help and know your have your radio working again. 

Posted on Jul 01, 2009


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Bought car and owner did not have radio code local dealer pulled radio and got a code which did not work what is next step

Many times when you try and enter the default 'password', you have tried a few times to get into it, however it may have locked itself for too many times. Either remove the batter connections for a couple of minutes or unplug the radio power (best) if you know where it is. I suggest radio power, because you know it has nothing to keep it powered up in some kind of sleep mode. It needs to be totally powered off for a few seconds (maybe a few minutes in some cases). Then enter the password (usually just a few numbers) and see if it will let you in. It might be a good way to try anyway..

I had a vehicle that had an internal battery to the radio, so you had to not only remove power but remove the battery to clear it's ability to enter the 'password'..


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I don't know what people are thinking here...!!!
Anyway, you will notice that these black and red caps have little straps on them. This should give you the hint that they can come off. Don't be afraid to tug on these suckers until they come off. Then using a 10mm socket, remove the battery bolts, negative first. Then remove the battery strap. This battery is vented, so remove the tubing carefully so as not to damage them and get the proper AC/Delco replacement. Not cheap! Oh and remember to drive your car for about 30 minutes normal driving to reset the ECM. Also, if you have a password on your stereo, remember it, or disable this feature before you start, or you will have a useless piece of scrap for a radio!

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I have aproblem with my tape password of mercedes 300E after changing my battery then radio ask me to enter password i think i entered it correct more than 10 times but it did not play now i cant ...

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2004 honda odessey radio code

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