Did a quick search and not sure if this TSB has been discussed. My Tacoma was made in 07 and falls within there VIN and year. Mostly happening in winter my tacoma's heat would fail on me. The blower would work fine as you can hear it running, but heat was very very little or not present. If you have this this tsb is for you.
If this has been discussed my bad, but imagine driving in winter with no heat and no way to help clear windshield with heat from the vents.
This is the short summery of the TSB, If you need more details I'll do my best to answer them.
Decreased Air Volume from HVAC Vents
Some customers may experience decreased air volume from HVAC vents when the temperature is set to maximum heat.
Warranty application is limited to correction of a problem based upon a customer's specific complaint.
This repair is covered under the Toyota Comprehensive Warranty. This Warranty is in effect for 36 months of 36,000 miles, whichever occurs first, from the vehicle's in service date.
I have now put 41,000+miles on my 07 tacoma. I am going to call Toyota directly and see if they will warranty me anyway. I don't see why if a part fails because it is defective in my 07, just because I am out of warranty they won't honor the fix. I did take it in before when it was in warranty but of course my hot air worked and I just hope it's documented because I did not get any paperwork.
"I lost the paper with the VIN numbers included, I'll find them monday if someone doesn't already know them and can add them."
Seems like they replace part number 87287-04040 Damper, Heater Air
Description, R&R Heater Air Damper Door
It's a whopping 4.7 hour job.
If you would like the TSB in full and the repair instructions please PM me and hopefully monday I'll get a better looking copy.