I have a constant drain on my battery. on 2001 BMW X5

Occurs, consistently. I have had it checked by dealership. They say it is the blower fan. My mechanic unplugged blower fan and there still was a drain. Getting frustrated.

by in Port Huron, MI on January 31, 2011
1 answer 1 comment
ANSWER by on January 31, 2011
it is not the blower fan; most likely the blower resistor which is sometimes referred to as a final stage. it has access directly to the battery at all times, even with the key removed. your mechanic should know this if he bothered looking at the wiring diagram. there are other things that can cause a parasitic draw, but this is the most common one on all BMW's.
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COMMENT by on January 31, 2011
thank-you for your response. that makes the most sense out of everything that i have heard. i will follow up on this and appreciate your help. babymywheels