E-Class (W211) 2003-2009

key fob not working

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Old 08-08-2015, 11:43 PM
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2003 e500
key fob not working

Just replaced two key fob batteries on my 03 E500. Now keyless-go and both fobs do not work. Please advice.
Old 08-09-2015, 05:50 PM
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1999 E300TD
Very odd---try another set of batteries

PS: your comments "do not work" do you mean that all push buttons on the key fob will not accurate anything!!
Old 08-10-2015, 12:41 PM
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2003 e500
Yes, all buttons do not work. I will try another set of new batteries. If it still does not operate anything will it need to be reprogrammed?
Old 08-10-2015, 01:58 PM
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1999 E300TD
No, however, make sure that they meet the definition of new, not a used set from your girlfriend, that you would consider new to the car or a set you purchased from Coney Island Olga who said they were new that you got for nothing!!

Then after confirming no actuation with the really new batteries--then you have an issue with the keyless go system--that is not a DIY, it's a DAS diagnostic scan to determing the fault in the system(remember this is not an OBD fault)
Old 08-10-2015, 09:59 PM
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W204 C63 AMG, W212 E250 CGI, C207 E250 CGI
did the key/s worked prior to changing batteries or is that the reason why you changed em? im assuming both keys dont work with lockin/unlocking, what about with the ignition? if none of these works, Plutoe is right. goodluck mate!

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