2007 acura tl blows hot air on passenger side, driver side is normal

Hello and welcome to ExpertHelp.com! My name is Relly De Jesus and I'm going to do everything in my power to answer your question to your full satisfaction!

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 Hello Leonard... how are you doing today?

That's great to hear... As a first course of action, I strongly suggest that you remove the positive battery connector and let it sit for 5 minutes before reconnecting it. Start the engine and try to  check if the heat will blow evenly.

If reconnecting the battery doesn't resolve the issue then the problem here will surely be the blend door actuator. This do fail over time and the result will be uneven distribution of heat on either side.

Picture below is the part that will need replacement

This will cost $50 at least. Once replaced you'll be good.

Yes please try to disconnect the terminal now and let's see the result.  I'll be standing by Leonard

Ok, the actuator is located  underneat the dash. Here's a video on how to access it. Please click on the blue link named ACURA blend door actuator removal below.

ACURA blend door actuator removal

You can use this for reference Leonard. By the way before we get done later I'm gonna ask you a little favor ok. Thank you

Dear Leonard, It was a pleasure helping you with your Acura issue today. Here is a summary of the resolution.

Issue identified : Uneven distribution of heat on vent
Solution Implemented : Resetting procedure but to no avail. Blend door actuator will need replacement.
If issue resurfaces : If issue resurfaces in next 30 days, come back to this Question page and let me know. If you are unable to find your way back to this Question page, please contact our customer support either by email (s**t@experthelp.com) OR call us at ***-***-****

No problem with that Leonard... I'm just so glad to be of help. You are welcome and good luck.