Good to hear and thanks for the update.

So if I'm having a similar issue, what would be the next logical part to check? Engine reaches operating temperature and the Thermostat is opens. Both pipes (under the steering wheel) at the heater core get hot, but there is no warm air blowing. A couple years ago, the A/C blower motor went bad so I replaced it. I do occasionally get a buzzing sound from within the glove box area which from the videos that I've seen on youtube seems to be the air mix servo motor / blend door actuator. Upon inspection, I can see things are moving in there when I switch from heat to cool and back again. But I never get any hot air. Is the correct next step to just go ahead and replace the blend door actuator and its associated parts?

What model T4R do you have...SR5, Limited, Sport Edition?

I ask because the Limited has a dual zone system, driver's side and then passenger's side, all other models have a single zone system, if you have a Limited is there no heat on both the driver's side and the passenger side?

That all being asked, I think your issue is the blend door actuator, only one for a single zone, two for the dual zone but both may not be bad.

SR5

Thanks for the response!

that's what I did and even though I saw almost zero debris come out, I was lucky enough to hook it all back up and sure enough I got my heat back =]