C Class 2004 Diesel Rapid Battery Drain

Mike the tech

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Feb 4, 2018
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Your Mercedes
C220 cdi coupe 2006
Some diesel cars have a block heater, there is an article in the diy section on this draining the battery
Many thanks to this forum I had a 17 amp drain on my batery pulled fuses pulled my hair .then read the thread about block heater .spot on cured . I diconected the battery disconnect the feed to the feed tree next to the battery 13mm nut connected battery via multi meter17 amp drain , followed the other cable on battery positive post to starter and block heater disconnected the block heater meter dropped to 0.02 amp job done caution u need a ramp and electrical savy to do this thank you forum for pointing me in right direction mike the tech ps block heater above starter
 

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