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Discussion Starter #1
My 2001 C320 does not recognize my key once in a while. I can't unlock the car and when I use the valet/physical key, the alarm will go off but I still can't start the engine or even turn the ignition. So far, I can just walk away, come back a few minutes later and the problem is usually gone. Nevertheless, it is extremely annoying and the problem seems to happen more often over time. The batteries of the car and inside both of my remote keys have been changed btw.

Any help would be greatly appreciated.
 

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Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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19,625 Posts
Does this happen with all keys at the same time? If so, this could be either a bad SAM (the front one) or a bad DAS module. If not, it's a bad key.
 
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