2012 Jeep Grand Cherokee electrical system problems

“The alternator failed. It was the Safety Recall P60 (NHTSA 14V-634) remedy alternator, installed by an authorized FCA dealer when the recall was completed on 08/30/2021, as FCA confirmed in writing. On 09/24/2026, at 41,275 miles, the vehicle had no electrical power and would not start. An independent New York State registered repair facility diagnosed the failure as "no power," "not starting," and "bad alternator (burning)," and replaced the alternator assembly the same day. The remedy alternator failed about 5 years after installation. The vehicle averages under 3,000 miles per year. The mileage at installation is in FCA's records and is UNKNOWN to me. Safety risk: the P60 recall states that these alternator diodes can fail rapidly with no output or a short to ground, which can disable ABS, electronic stability control, and the engine and body controllers, and can cause vehicle shutdown while driving and an underhood electrical fire, with limited or no warning to the driver. This failure is consistent with that description: total loss of power and a burning alternator. Had it failed while driving, the vehicle could have shut down in traffic. Warning lamps or…”

“Alternator smoking. it is available for inspection. Filled interior of vehicle with smoke the engine stopped running while driving. Took to dealership for a 2nd sun visor recall and had them diagnose the smoking alternator. The voltage light came on just before the alternator started smoking”

“My 2012 Jeep Grand Cherokee suddenly was stalling, and would not re-start, especially when turning the steering. AAA Tech diagnosed as High Diode Ripple Voltage in the Alternator, damaging the Battery. Needed to Replace both Alternator and Battery at a cost of $1068. Car was recalled under T36, and the repair has a repeat failure again. Jeep Declined to repair or re-imburse the repair costs. More importantly its still a major safety issue, and Jeep is failing their legal obligation to provide a permanent fix, not a temporary fix.”

“The contact owns a 2012 Jeep Grand Cherokee. The contact stated that while driving approximately 5 MPH, the brake pedal was depressed while slowing down; however, the RPM elevated to 5,500 RPM. The contact stated that excessive force was needed to depress the brake pedal. The vehicle was stopped, turned off, restarted, and operated normally. Additionally, the remote start feature was not operating properly. After remote starting the vehicle, the brake pedal was difficult to depress. The contact also stated that a phone call was ringing through the radio even though the phone was not in use. The contact researched online and believed that the vehicle had been hacked. The local dealer was contacted, and the contact was informed that the vehicle could not be hacked. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 94,000.”

“All dashboard lights came on while cherokee shut off on the parkway yet allowing me to steer to the side shoulder. Is this a symptom of total integrated power module TIPM.”

“I brought my vehicle to the Jeep of concord for a fuel pump relay recall and oil change on 11/12/25. Prior to 11/12 the vehicle did not experience any of the issues described below. On 11/13/25, a dealership representative sent an inspection video stating the vehicle was in immaculate condition following the recall repair. However, within less than 24 hours, the check engine light illuminated, and additional issues began occurring intermittently. After the recall work, the vehicle began experiencing intermittent warning lights, including service four wheel drive, traction control, and check engine. These warnings appear unpredictably and are sometimes accompanied by loss of vehicle functions, creating unsafe driving conditions. The vehicle has also experienced overheating since these issues began. Sometimes turning the vehicle off and then on would temporarily correct the problem if it would recrank. The failures occur intermittently, making them difficult to reproduce or diagnose, and they pose serious safety risks, including the potential for sudden loss of power, steering assistance, or drivability while the vehicle is in motion. On multiple occasions, the…”