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: 23,166 mi (2,500 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, 2,500 mi
Battries completly dead. Dealer could not find any problem. Jumped it to start. No problem sense.