what would cause the a/c . heater blower fan to stop operating? on 1998 Mercedes-Benz E430

The fan stopped working abruptly and the next morning when we went to start te care the battery had gone dead due to what seems to be a fan that was stating on after the ignitionwas turned off. Please advise on this ..

by in Salem, OR on July 09, 2012
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2 answers 1 comment
ANSWER by , July 10, 2012
Possibly a faulty relay.Stuck-on killing the battery then failed because it over-heated the contacts 'til the battery went dead.Check for power at the blower motor and work backwards .OR consult a manual and work forward.
COMMENT by , July 11, 2012
I will do that diagnosis and follow up on it and let you know what I find out
ANSWER by , February 10, 2013
you will need a new blower regulator[failed].may also will need a updated blower motor with cover