No air blowing means the HVAC cabin blower is not spinning is that what you are saying?

I would use scan tool to command the blower on make sure it's working and go from there.

Often the FSU will have a dirty connection and unplugging and re plugging will get the blower spinning. There's also a test you can short the correct pins on the FSU plug and get the fan to spin full speed.

Confirm you are saying the internal blower is not spinning. The scan software should also show if the AC compressor is engaging.

If you drive so the condenser gets air flow and request AC the evaporator should get cold (measure with software) and the pipes under the hood will get hot/cold even if the blower isn't getting the cold air pushed into the cabin.

FSU is orders of magnitude easier then AC recharge (which also is not that bad)

The "blower" test doing nothing says most likely your FSU not functional. Very recent thread described the exact pins on the FSU connector to jumper to test the blower.

If that works you should be able to run AC and get cold though the HVAC brain may not allow the compressor to engage if it can't detect the FSU.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)