"Will it be unlocked so my locksmith can program it?" Answer: "Unlocked" refers to remotes with a transponder but the factory remote for 04 Sonata doesn't so its not applicable to your situation. "US or China?" Answer: P/N 7210A-OEM = US, P/N 7210A = China. "Guaranteed to work" includes to program.

Yes, the remote includes the instructions needed to program the Autostart system in your vehicle to accept the replacement remote(s).

Every remote programmed during the procedure will work on the MH. So you will follow the included procedure and repeat steps 3 and 4 as instructed for each remote that you wish to work.

First press the lock button and release. Then use the 3rd button (depending which system and setup, either press and hold for 2 or 3 seconds, or press 2 or 3 times fast.)

When the valet light is on solid (indicates valet mode turned on) programming mode can't be entered. Turn off valet mode first by making sure doors unlocked and pressing valet button for 2 seconds. Then you can mproceed to program the remote.

Any automotive locksmith can cut the key for you. You can find one at www.autolocksmithfinder.com or in your local yellow pages.

You'll need a local automotive locksmith to program your vehicle to use the remote and cut the key too.

It doesn't matter where you got them, as long as they already start the engine when you turn the keys in the ignition. When you have two working keys you can program more yourself.

Yes

2008-2010 vehicles are onboard programmable, meaning the instructions come with the remote and you follow them easily to make the vehicle learn the new remote. 2011-2015 vehicles are not onboard programmable, this means you will need an automotive locksmith to program your van to accept new remotes

If your old remote is a XT-72LCD and the system in your car is RS-725LCD or RS-727LCD then the XT-33 will work. The XT-72LCD can also work on RS-720 and RS-520 which the XT-33 doesn't work with.