One problem related to battery cable has been reported for the 2018 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Jeep Grand Cherokee based on all problems reported for the 2018 Grand Cherokee.
The main Jeep battery had a thermal runaway and melted to the point it started a fire. The battery is located under the passenger seat and melted the battery cover, seat cover, carpet,seat trim. Both battery cables Jeep would not cover this under their warranty. 2018 Jeep warranty statement from the date of purchase, a Jeep basic limited warranty (or Jeep bumper-to-bumper warranty) covers the cost of repairs throughout most of your vehicle. It also covers the cost of parts and labor due to defective materials, workmanship, or factory preparation. A basic warranty also covers Jeep roadside assistance for towing to a dealership during the first three years or 36,000 miles, whichever comes first.