Question about 2002 Mercedes-Benz C-Class

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2002 c320 mercedes battery goes dead overnight the alternater does not seem to have a problem the other unswitched accessories appear to be working ok one item is not the courtesy light will not activate from door sw. but can be turned from the overhead sw. the nominal current draw key off and removed lights timed is 1.18 amps continuous however upon initial batt. cable reconnect a huge draw like a big capacitor charging .the electrical system appears to be stock no aftermarket sound system ect. obd2 shows no codes electrcal drawing are proving illusive am thinking a bad filter capacitor power seats trunk and glove box lamps do not seem at fault uppon reboot dash reader says esp or something of the nature skid or traction controll not available it was a switchable driving option I did not try to toggle it on I presumed it was not germain to the problem at hand.

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Unplug the power seats

Posted on Oct 03, 2009

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With key off and all accessories off, test both sides of each fuse til you find the one that's passing power through it. (The dome light may be powered up if you have the door open while checking the fuses.) This will at least clue you in to what circuit has the mechanical draw.

Posted on May 13, 2009

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Good Luck

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