w211 diagnostic socket battery drain

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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