How do I erase my personal data before trading in my car?

Do a factory reset of the infotainment system to clear paired phones, contacts, call logs, saved addresses and garage door codes. Remove the car from any manufacturer app or connected-services account so the next owner can't be tracked or controlled through your account, and cancel subscriptions tied to the vehicle. Also clear out toll tags, parking stickers and any paperwork in the glovebox with your personal information. Your owner's manual explains the reset steps.