There is a TSB on this.
Check if the front right floor carpet is wet. If yes, water has gained entry to the IP BEC causing communication issues between modules.
You need to check for leaks and ensure the drain hose for the sunroof is plugged in securely.
It is best to get this rectified asap as prolonged presence of water in electrical/electronic components can result in other complications.
Saturday, September 1st, 2012 AT 6:36 PM