My TDI deisel has a battery drain issue,fuse block power wire draws too many amp on 2002 Volkswagen Jetta TDI

alternator charges battery, seems that the alternator wire too the battery get too hot. battery does not overcharge. I replaced alt. starter and battery ( they were old anyway ). I removed all fuses at fuse block and the power wire still draws amps from the battery. help. when I disconnect the power wire to the fuse block my engine cooling fans turn on but do not reach fan speed.

by in Salt Lake City, UT on May 22, 2013
1 answer
ANSWER by on August 12, 2013
If I remember correctly there is a fan control module on that vehicle bolted to the bottom of the battery tray (under the tray). The module is approx 4 inches wide, 1 inch tall and 1 inch thick. Unplug this module and see if your battery drain goes away. These modules can get rust internally and draw power and/or they sometimes get damaged in accidents and cause these kinds of problems. Good luck!

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