Quote:
Originally Posted by Ornery37
I am new to the Mercedes 300d but when driving with ac the car temp well above 80.
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"Car temp" is not a factor in aux fan operation.
Quote:
Originally Posted by Ornery37
And was told with other makes when you turn on the ac the electric fan should come on and it does not.
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That's not quite correct. The fan is actuated by refrigerant temp as sensed by a switch on the a/c receiver/drier. Low refrigerant levels will prevent the temp from reaching the trigger point.