2018 Jeep Grand Cherokee: Electrical System complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 339 owner complaints for the 2018 Jeep Grand Cherokee that list the electrical system component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11761114 (filed 08/31/2026): “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 abo…”
- NHTSA complaint ODI #11759288 (filed 08/24/2026): “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 with…”
- NHTSA complaint ODI #11756332 (filed 08/11/2026): “The transmission goes into neutral. it has gone into neutral on the highway,local streets, also from a stop. from a stop in drive the electronic d on the instrument panel starts flashing. i turn on the hazards put transmission shifter in park and start engine. this problem is intermittent, it can be…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
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