2018 Jeep Grand Cherokee electrical system problems
339 owner complaints filed with NHTSA name the electrical system on the 2018 Jeep Grand Cherokee — 40% of all complaints for this model year.
What owners report
“Subject: 2018 Jeep Grand Cherokee – Sudden Loss of Power, PCM Failure, Electrical Failures, and Concern Regarding Recall-Related Symptoms I am filing this complaint because my 2018 Jeep Grand Cherokee experienced a sudden and unexpected loss of power while I was driving, and I am very concerned…”
filed Aug 31, 2026
“The Jeep was giving me a warning sign. It said stop slowly. Your jeep will shut off so I replaced the two batteries. As my Mechanic told me I replaced the alternator. I also replaced the ground wires. Nothing is making my jeep start. We ran the codes on the jeep and it came back as a U0100 code…”
filed Aug 24, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Powertrain control module may be equipped with a voltage regulator chip in the circuit…Campaign 18V524000 · Aug 9, 2018
- These vehicles are being recalled to address a defect that could prevent the cruise…Campaign 18V332000 · May 17, 2018
Electrical System problems in other Grand Cherokee years
| Year | Reports | Share |
|---|---|---|
| 2025 Grand Cherokee | 30 | 41% |
| 2024 Grand Cherokee | 109 | 45% |
| 2023 Grand Cherokee | 177 | 46% |
| 2022 Grand Cherokee | 129 | 50% |
| 2021 Grand Cherokee | 114 | 28% |
| 2020 Grand Cherokee | 71 | 30% |
| 2019 Grand Cherokee | 82 | 22% |
| 2017 Grand Cherokee | 87 | 24% |
| 2016 Grand Cherokee | 61 | 20% |
| 2015 Grand Cherokee | 136 | 10% |
| 2014 Grand Cherokee | 483 | 20% |
| 2013 Grand Cherokee | 374 | 47% |
Other reported problem areas on the 2018 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.