[nictobin]

When I turn on the air in my 2009 335D no air moves in any configuration. Wether it’s blowing on my face or on the windshield, there is no air whatsoever. Could this be my blower motor? How do I diagnose this?

[Scubudo]

IIRC you can use INPA, to run some diagnostics on the HVAC system.

...but 1st I would check to see if there are any codes or blown fuses.

If there are no codes or blown fuses and you are not computer savvy, the old school method of unplugging the blower motor and applying 12 volts directly to the blower motor should still work.

[Jturbo_M3]

You can also check for any debris that might be caught up in the blower Motor's fan blades.

[335dlci]

Originally Posted by Jturbo_M3

You can also check for any debris that might be caught up in the blower Motor's fan blades.

Wat

[ptpending]

if you battery is discharged then car will only heat the windscreen
the seat heating also will be activated but will not heat