Loud HVAC fan in dash

[2014 LEX 570 GA]

Recently replaced the cabin air filter.

2x checked to make sure I did it correctly.

HVAC fan in dash now making a loud humming noise when AC is on max.

Anyone know what my issue is?

 

[bloc]

You can drop the squirrel cage fan out the bottom to see if something is stuck in it. Or if it needs changing due to a bad bushing or something, same process.

Just do your research.. I seem to remember someone here had issues with an aftermarket fan bolting in but the wiring being different..

 

[clrussell]

Probably have something in the fan.

Although mine is “loud” occasionally and it has nothing in it mine has 300k on it so I’ll order one from Toyota one day.

 

[GrouchyTech]

Probably a leaf or other debris. Drop the fan and clean it out.

 

[2014 LEX 570 GA]

Thanks guys.

Was a little panicked about something being potentially broken when I initially posted.

After doing research now makes sense it is either debris or needs new fan unit, which I have ordered and will replace preventatives.

These threads are helpful, including part number:

$750 to change out heater/AC blower? - https://forum.ih8mud.com/threads/750-to-change-out-heater-ac-blower.1055382/

Yet another lurker out of the shadows... - https://forum.ih8mud.com/threads/yet-another-lurker-out-of-the-shadows.1047329/

 

[2014 LEX 570 GA]

Did the replacement the other day - pretty straightforward.

My park assist (cameras, sensors) went down after the install - I went back in and unplugged and plugged back in the wires that go into the ECU (silver metal panel immediately above the plastic kick plate) and all is well now.