Several steps I'd suggest:
1. Read the owner's manual that you should have gotten with your car.
2. If you didn't get an owner's manual, register at Acura.com for an owner's account. After you register on that site, you will have access to an "on-line" Owner's Manual.
3. Do a search on the 4th Generation TL Forum: I'm sure you are not the first TL who has asked this question.
I hope one of these suggestions gets you what you need to pair your phone with your car. Again, Welcome to AW!