A software issue with the sunroof module may lead to a battery drain while the ignition is off. This may cause a dead battery if the vehicle is left parked for a couple days, however reprogramming the sunroof module with new software may fix this problem.Google+
Car Problem Reports
Dodge Ram 2500 Battery Drain Due to Software Issue With Sunroof Module
Dodge Ram 2500 Problem
Average Mileage: 33,500 mi (7,000 mi - 60,000 mi)
Visitor, 2010 Dodge Ram 2500, 7,000 mi
i have a 2010 dodge ram diesel (no sunroon). 1st time truck sat four days and interior lights were dim and insufficient power to start truck. i thought my cell phone charger may have drained battery. used charger to charge battery and restart. truck ran fine and restarted for 1 week no problem. now truck sat for 3 days, no cell phone charger and truck is completely dead.
Visitor, 2010 Dodge Ram 2500
Battries completly dead. Dealer could not find any problem. Jumped it to start. No problem sense.