Hi,
My wife's X5 has stopped heating the cabin (which is poorly timed with minus 10 degrees last night)
Anyway, she says that the fan only runs fast on defrost. she says turning the regular fan speed control up half way, there is only slight air movement and the air is barely warm.
Would this be the Final Stage Resistor I've read about? Also, would that prevent air warming?

THX!

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