If you hear a tweeting or the sound of a bearing whining then yes. You should be able to hear the noise when at low fan speeds. Does your fan ever not work? If you have 3 weeks left of CPO then get them to replace the blower motor otherwise it will cost you at least a $1000 if not more. Because the whole dash has to come off to replace the blower motor.

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2010 X5M /// R63 AMG...Wifey's 540HP Family Hualer

2001 X5 3.0i Sport 335,448 miles & counting...
SMG M3 Steering wheel
E46 Stainless Racing Headers
4.6is Exhaust
Turner Pulleys
Afe Intake
Brembo drilled rotors
PowerFlex Bushings
Hualingan
30mm H&R Spacers rear
20mm H&R Spacers front
Bavarian Autosport High-Performance Coils
Active Autowerke's Performance Software