E39 Blower Motor Non- Stop - FSU Replaced

[Jacrist7]

Trying to figure out, besides pulling fuses, how to get the AC/Heater blower to stop blowing.
Have had to disconnect my battery since the blower won't stop even when the key is taken out and I have had the FSU replaced and it's still doing it.
Not wanting to take to a dealership (Single girl walking in with no idea what is wrong with her car $$$$$$$$$) and I'm told it MAY be the Head Unit Controller - Has anyone experienced or figured out how to fix this issue?
Thank you!

[edjack]

Was it an ebay FSU?

Possible that the IHKA panel may be at fault.

[Jacrist7]

Wasn't Ebay, but it was an after market from what I'm told.
Sorry, Do you mean the panel/ unit that displays and has the heat, fan, AC buttons?
Pulled fuse 9 and the blower turned off, allowing me not to have to disconnect my battery. :/
Thanks!!!

[BavarianE31]

Either the FSU you received is bad as well or the IHKA panel is bad. FSU is way more common but a bad HVAC panel (the unit with the temperature controls and display) have been known to go bad as well. Both only take 5 minutes to replace.

[Jacrist7]

Thank you so much for the info! I appreciate the responses as I am not a car gal (Although I look cute in the car. HA!) and trying not to get reamed by the dealership or mechanic!

[JimLev]

F9 removes power from the HVAC control panel which also stops the panel from sending the control voltage (2-8 volts) to the FSU. Looks like the HVAC panel is bad.
See if there are any junk yards near you, the panel is easy to remove and replace.

[Jacrist7]

Thank you!!!!!!!

f9 removes power from the hvac control panel which also stops the panel from sending the control voltage (2-8 volts) to the fsu. Looks like the hvac panel is bad.
See if there are any junk yards near you, the panel is easy to remove and replace.