Why did my car AUX, steering wheel buttons and radio lights stop working?

My car battery was starting to die so I called AAA to have them come and replace it. So they send out a guy, he replaces the batter and the car turns on now. Cool but now the buttons on my steering wheel that control volume and radio station doesn't work. I tryed to plug in to the aux and it says something like aux not available and the lights on my radio also don't work. This guy fixed one problem but created 3 more… How to I get the buttons on the steering wheel to work, aux to work and lights on the radio to work again?

Its a 2008 Ford Taurus SEL

You have to take it to the dealer and get it re-programmed.

When a battery is removed you have to re-progam the radio. Usually it's just a matter of turning it on with the control knob. The AUX may be on the same circuit.

Likely the anti-theft system is activated and you need to reset the stereo. Look in your owner's manual to see how to do that.