No, it's not automatic, but if you qualify for the Child Tax Credit (CTC) you may get the Additional Child Tax Credit (ACTC).
The ACTC is a refundable credit for taxpayers who don't have enough taxable income to take the full CTC.
You will know whether you get this credit as soon as you complete the Child Tax Credit section in TurboTax.
If you want to look at that again:
do you know why my refund is delayed in path if i dont get the actc or eitc?
The IRS will contact you by mail if it needs more information to process your return. irs.gov
You can use Where's My Refund? to check the status of your refund.