2021 Jeep Grand Cherokee electrical system problems
113 owner complaints filed with NHTSA name the electrical system on the 2021 Jeep Grand Cherokee — 28% of all complaints for this model year.
What owners report
“I had stopped at a red light and the auto start/stop turned off the car. It would not restart. The fault caused it to stay in Park and could not get out of Park to move vehicle. This not only caused a road hazard but made me and others unsafe. The cause was a enclosed fuse box that made batteries…”
filed Jun 14, 2026
“This submission is an update to NHTSA Complaint #11727024. The vehicle continues to experience recurring engine overheating and misfire conditions. These issues have been previously diagnosed and are consistent with known manufacturer Technical Service Bulletins (TSBs) related to this engine…”
filed Apr 2, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Display Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only.
9100866 · Service Bulletin/Repair Instructions · issued Jul 14, 2026
Electrical System problems in other Grand Cherokee years
| Year | Reports | Share |
|---|---|---|
| 2025 Grand Cherokee | 27 | 42% |
| 2024 Grand Cherokee | 106 | 45% |
| 2023 Grand Cherokee | 176 | 47% |
| 2022 Grand Cherokee | 130 | 51% |
| 2020 Grand Cherokee | 68 | 30% |
| 2019 Grand Cherokee | 82 | 23% |
| 2018 Grand Cherokee | 336 | 40% |
| 2017 Grand Cherokee | 87 | 24% |
| 2016 Grand Cherokee | 61 | 20% |
| 2015 Grand Cherokee | 135 | 10% |
| 2014 Grand Cherokee | 482 | 20% |
| 2013 Grand Cherokee | 374 | 47% |
Other reported problem areas on the 2021 Jeep Grand Cherokee
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.