w211 diagnostic socket battery drain

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4life211

Active Member
Joined
Jul 14, 2015
Messages
301
Car
mercedes 211
My E270 cdi 2003 had battery drain .When tested with amp meter it drops to 0.18A.then I followed the procedure of removing all fuses 1 by 1 .The fuse of "Diagnostic socket" seems to be the one ,it drops to 0.03-0.08A .Why is Diagnostic socket cause this problem ???
 

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