One problem related to trunk wiring has been reported for the 2012 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Jeep Grand Cherokee based on all problems reported for the 2012 Grand Cherokee.
After starting the vehicle, a loud whining noise came from what was determined to be the alternator. The alternator probably short circuited resulting in the destruction of the wiring system to include the vehicle computer system. A burning odor was noticed from the wiring system under the hood ( engine compartment). The entire electrical system failed requiring the vehicle to be towed to the nearest Jeep dealer. This episode happened while the vehicle was in motion traveling approximately 1 mile. The vehicle was then parked with the distinct odor of burning. The vehicle is now at the Jeep dealership awaiting diagnosis.