You have to go through all three steps of the FILE section -- Choose how you are paying your fees, make sure to choose how to receive your refund if you are getting a refund-- and the last thing you do is click a big orange button that says "Transmit my returns now."
HOW TO CHANGE OR ENTER BANKING INFORMATION FOR REFUND
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-refund/change-transferred-direct-dep...
You cannot change banking information while your return is in pending, nor can you change it after the return is accepted. The IRS does not allow it.
DID YOU E-FILE?
Did you e-file? Did you go through all three steps of the FILE section and click a big orange button that said “Transmit my returns now?”
When you e-file your return you will get two emails from TurboTax. The first one will say your return has been transmitted; the second one will tell you the IRS has accepted or rejected your federal e-file. If you filed a state return, there will be a third email (usually a day or two later) that tells you if the state e-file was accepted or rejected.
Check your e-file status:
https://turbotax.intuit.com/tax-tools/efile-status-lookup/
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**