To set up wireless on the Canon PIXMA MX459, you can use the printer’s **Wireless LAN Setup** menu to connect to your Wi-Fi network, either by WPS push button or by manually selecting your Wi-Fi network and entering the password.

Key steps are:

– On the printer, access the **Setup Menu** (often indicated by a wrench and screwdriver icon).
– Select **Wireless LAN Setup** and press OK.
– Choose the **WPS Push Button** method if your router supports it: press OK on the printer, then press the WPS button on your router to connect automatically.
– If WPS is not available, scroll to manually search for your Wi-Fi network, select it, and enter the password using the printer’s keypad, switching between numeric and alphabetic characters as needed[1][2].

Ensure your router is on and within range, and that you have your Wi-Fi password handy. After connecting, you should see a Wi-Fi icon on the printer screen briefly confirming connection[1].

For detailed instructions, including troubleshooting and alternate connection methods, you can reference the official Canon wireless setup guides or the MX459 manual[3][4].