Vehicle stalled while driving. Causing sudden loss of engine power and related functions such as power steering. Cause was do to water intrusion from rear window leaking on to a control module RF Module. The leak is common in thousands of ram trucks over several years. Theyve attempted to address it for some years but not all. Having such an important piece of equipment under a window which they know is prone to leaking is irresponsible and negligent. Had I been at higher speed this could have been deadly.