How do you replace antenna base on 2010 sienna?

To replace the antenna base on a 2010 Toyota Sienna, first, remove the headliner or any trim that obstructs access to the antenna base from inside the vehicle. Next, unscrew the existing antenna base from the roof and disconnect any wiring if applicable. Install the new antenna base by securing it in place and reconnecting any wiring, then reattach the headliner or trim. Finally, test the antenna to ensure proper reception.