If it is still doing that after "reviewing" the vehicle section (as Tagteam suggested), it is possible that TurboTax has not updated the software.
The 'default' rules according to the Tax Code would not allow any more depreciation until the year 2024, so it is possible that TurboTax is still stuck on that. But the IRS came out with Revenue Procedure 2019-13 to counter-act that weird rule about the depreciation not being allowed for 5 years. But again, I am not sure if that is the problem in your case or not.
