How do you replace antenna mast on Lexus rx300?

To replace the antenna mast on a Lexus RX300, first, ensure the vehicle is turned off and the antenna is in the down position. Use a wrench to unscrew the old mast from the base, then carefully pull it out. Install the new antenna mast by screwing it into the base and ensuring it is securely tightened. Finally, test the antenna to ensure it functions properly.