I even imported a file that my MIL had done for us. She has that entire section, but my software is completely missing it. At first I thought it was because I was on my Mac, but after downloading it on our PC, it still isn't there. What do I do?
Try closing TurboTax, clear your Cache and Cookies if you are using TurboTax Online, and reopen TurboTax. You can also try a different browser.
Also, make sure you have ran all updates.
If using TurboTax Online: Clear your cache and cookies. See this FAQ, for your particular browser.
If using TurboTax Desktop: Please see this FAQ.
We have the software, downloaded, and I tried updating, but it didn't work.
Business Use of Vehicle would be a Business Expense under your Business.
EDIT your Business, and go to Expenses.
You will need to add your Vehicle, and Vehicle Expenses.
Here's more info on Using a Vehicle for Business.