I did the blower motor after my brushes wore to the point it just stopped working. Had to remove the entire dash after steering wheel and console. Not a fun or quick job but I had a good helper.

I highly doubt it could be done without removing the dash.

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'04 X5 3.0 5AT with 300,000+km - Black
'08 535xi 6AT with 290,000+km - Titanium Silver