can we upgrade Sync-2 to Sync-3 car play .

Hello, all these concerns must be addressed by your local Lincoln dealership. A finance consultant can talk to you about ways you can extend your warranty. If you are still underneath 4 years / 50,000 miles, you can add a Lincoln / Ford Extended Service Plan on the vehicle via your dealership. As far as Sync - only those familiar with that software at the dealership could address it. I would guess it is not possible to upgrade this.