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Paul M ASE Master
Paul M ASE Master, ASE Master Tech
Category: BMW
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Experience:  ASE Master Tech 20+Years
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2003 530i: bmw..blower..fuses 9, 20, 75 & 76 are checked and ok

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I have a bmw 2003 530i. the blower does not work. fuses 9, 20, 75 & 76 are checked and ok. there is cold air coming from the vents as i drive down the road, (forced air very little). All controls seem to work. just no fan?!?!?!?!

thx rodney

Hello and thank you for using Just Answer


the most common cause of blower motor not to run is the blower motor final stage AKA (blower resistor)


you will need a meter to test the final stage


click here for more information on testing the final stage


let me know what you find and if you need more help





Paul M ASE Master and 2 other BMW Specialists are ready to help you
Customer: replied 7 years ago.

well the fan did bump at full speed. so thats good and the control heade seemed to change in voltage when tested.


so, I assume it is the endstage resistor. I ordered a new one and we shall see.


thank you for your help, the link to the diagram was extremly helpful in this trouble shooting.



No Problem Rod


thank you for using Just Answer


Positive feedback is greatly appreciated





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