Technical What is behind the plastic component that is causing my ABS, Hill Holder to fail???

[Siddhartha3890]

Hi guys,
I have had an issue with warning lights popping up and going away then again coming back within a span of few minutes. When i first start the car its all smooth and no issues. But after a while, the hill holder and ABS along with Hand Brake light pop-up so does my speedo and RPM meter keep dying and coming back up. So today upon further inspection, I found that when i press the plastic component, the warning lights went away but only for a short time.Upon pressing the plastic part again, the same thing happened. Now I want to know what is behind the plastic component(which looks like A/C pipe for rear seat)? I have attached pictures and the last picture is the proper picture of the part I'm talking about. Any help in this regard would be deeply appreciated.

Thank you

 

[aurick86]

Behind that plastic there are basically only air ducts.
I would check those wires running across, also the connection with the airbag control ecu (it should be underneath those pipes).
Another place might be at the steering wheel, then the body computer.
The only other thing i can think of, would be the YAW /tilt/acceleration/G sensor , which should be somewhere underneath the airbag module, bolted to the floor (this is actually tied into the braking system, and a big part of ESP)