Hello - The controls on the steering wheel stopped working, meaning the light on the buttons come on but they are not working for example - The cruise control button light comes on but when I hit set nothing happens; and the media control don't work either. How do I identify and troubleshoot this issue ?

Clockspring?

That'* my guess.

Thank you. I check for it in rockauto and I couldn't find it. Do I have to get it from dealer ? Can I DIY ?

Depends on your skill level and aversion to risk.

If you do try to do it yourself, make sure to disconnect the battery and the airbag first.

While we're here, there is a chance that the clockspring isn't the problem. It is just the most likely cause of your symptoms.

Have you had any work done on it recently?

Well, I just got this car and in order to get it certified I had to do the breaks, struts and the mounts; while I was at the breaks I also changed the break fluid and bled the breaks. I took the car in the highway for a spin, and that'* when things started to go south, I had forgotten to properly seat the cap off the master cylinder and it spilled the break fluid all over the engine bay till this moment the cruise control/audio control was working. I take an exit, pull up to a mall, stop the car and then decide to head back that'* when the cruise and audio control stopped working. At home I popped the hood and found the break fluid spill all over the engine bay. I'm not sure if they are related or not but till the fluid spill everything was working fine.

Oh yeah, that'* related. Brake fluid eats things.

I wouldn't chase the clock spring theory now that we know this.

I'd start by rinsing everything well, with plain water, especially on/around/under the master cylinder. After that, start tracing things to look for damage.

Cleaned the engine bay with degreaser and water. I don't see any wires loose.

You need to inspect much deeper than looking at the top of it. Should probably get under it and inspect everywhere that brake fluid could have gotten. Probably should look under the dash as well.

What I see is the following:

1. Steering wheel controls working well
2. Brake fluid spilled all over
3. Steering wheel controls not working well

If I missed a step there, please let me know.

1. Steering wheel left and right controls don't work
2. It stopped working after the brake fluid spill
3. Horn works