I just joined for a unfortunate problem. I've had my 2011 g37x sedan for about a year and a half with no problems until now. Today after work I started up my car and the abs, traction light and the brake light were all on. I drove for a few minutes and they were still on so I turned off the car and started it right back up. When I started it there was a loud clunk from the passenger side, it stopped as soon as the car was running. Thinking it was all in my head I turned it off and on again, the noise was still there and much louder. The temperature is around 30 degrees here in wisconsin if thay helps at all. Any help is appreciated. The engine is bone stock besides k@n filters and a muffler delete.