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Possible Causes

WARNING: This page is about a different car, the 2011 RAM Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
INTEGRATED POWER MODULE FUSE (IPM) FUSE #59
(F504) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT SHORTED TO GROUND
(F921) IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN
(F504) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN
(C115) DEFOGGER RELAY CONTROL CIRCUIT OPEN
(C115) DEFOGGER RELAY CONTROL CIRCUIT SHORTED TO GROUND
REAR WINDOW DEFOGGER RELAY SHORTED/OPEN
INTEGRATED POWER MODULE (IPM)
FRONT CONTROL MODULE (FCM)