TT is calculating additional depreciation on an asset (vehicle) that took the full 179 deduction in the prior year. I don't see a way to override?

Your post shows you are using the Live Self-Employed online editions.

See this TurboTax support FAQ for how to contact a Tax Expert when using the Live editions - https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-setup/connect-tax-expert-turbotax-live/L73wOZD5D_US_en_US?uid=lnp8ihy8