In the beginning, before the Engineers could pinpoint the problem, both Module AND Ignition Switch were replaced to GUARANTEE a fix!
MUCH later, AFTER updating to a new production Module, they found the most probable cause which was the antenna coiled around the ignition switch.
BRP may have been able to save themselves some money, had they actually LISTENED to the EXPERIENCES of the Riders. That being that the key was SATURATING the module and should check it's antenna. But the problem with troubleshooting is when you have TWO areas. In this case the Module on some and antennas on others OR both. It wasn't until after a new module came out and problems continued, that BRP realized, they also had two modify the antenna and that did not occur until 2016.
My Module and Ignition Switch were swapped out in the summer of 2015 and since that time has never experienced a failure, except for one time when I layed my smartphone right next to the ignition switch. I moved my phone to it's proper location and all cleared immediately.
AJ