2020 Chrysler Pacifica: engine overheating

Filed Sep 14, 2026 · Electrical · TX

I took my 2020 Chrysler Pacifica Hybrid (VIN: [XXX]) to Sames Bastrop Chrysler Dodge Jeep Ram in [XXX], to have Safety Recall 52D performed on the high-voltage battery. Prior to bringing the van in, the vehicle was driving and charging completely normally with no charging errors. Sames performed the recall software update to the Battery Pack Control Module (BPCM) under Recall 52D, but their diagnostic scan logged an active high-voltage fault code (DTC P0E15-00 for the battery pack coolant heater) and a stored bypass valve code (DTC P0E7C-00). Despite these active thermal management codes showing up in their system, the technician marked the vehicle as passed and returned it to me. After driving the van home the vehicle completely refused to charge on my very first attempt at home. The dashboard displayed a "Service Battery" warning message, and the charging system has been completely locked out ever since. This is a serious safety concern because the high-voltage battery recall was issued specifically to prevent battery fires and thermal runaway caused by internal cell defects. Returning a hybrid vehicle with an active thermal management failure during a fire-related recall leaves the battery vulnerable to overheating and disables the charging safety systems. The van was returned to [XXX], where it has sat for over a month. Sames initially stated that Stellantis was refusing to cover the battery replacement even though federal law requires safety recall remedies to be completed free of charge regardless of mileage. The charging failure and trouble codes have been confirmed by the dealership under Repair Order #XXX. I have also opened an active corporate case directly with the manufacturer under Stellantis Case #XXX, and Sames has provided a temporary rental vehicle through Enterprise while this is investigated. The van and all of its original high-voltage components are currently in the service bay at [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 15, 2026 · Engine · IL

Head gasket is cracked causing cylinder 5 to misfire and burned up coolant in the engine causing the engine to overheat while driving and put safety of driver and passengers in danger while vehicle was traveling at high speeds.

Filed Aug 1, 2025 · Fuel system · KS · fire

The hybrid battery overheated and started burning the interior of the vehicle while it sat turned off charging in the garage. Smoke filled the house which had to be evacuated. Emergency services were called and the fire department brought the incident under control. An incident report was completed by the fire department and the vehicle is currently in the possession of insurance who is doing their own evaluation. There were no warning indicators or other problems prior to this happening.

Filed Jun 7, 2025 · Engine · PA

The head gasket failed. The check engine light came on and I took it to the dealer before the engine seized thankfully but it could have caused safety issues such as coolant leaks, engine breakdown potentially on the highway which could have caused an accident and risked people’s lives. If there was oil contamination, the engine could have locked up which def can cause an accident. Engine fire is even possible. The problem has been confirmed by an independent dealer. I know of many others who have experienced the same issue.

Filed Oct 17, 2024 · Engine · FL

Car started to rock and the engine light came on with a cylinder 3 misfire code (P0303). We replaced the spark plug and coil on cylinder 3 and the issue resolved temporarily. About 48 hours later the rocking and engine light came back on with the same error code. We swapped the spark plug and coil on cylinder 3 for those on cylinder 1. The check engine light turned off but we would still get the rocking intermittently. We also noticed the coolant level was low and there are water vapor coming from the exhaust in the morning when starting the engine. The engine temperature never got hot that we noticed. We refilled the coolant level but it would slowly drop, and we felt there may be a leak or, with the cylinder 3 misfire, there may be a blown head gasket. We tried a K-seal coolant leak repair. This stopped the coolant leak and rocking for a few weeks, but the leak and engine rocking started to return. We took it to an auto-body shop and, after flushing the line, they checked the engine head gasket which had a leak on cylinder 3 (and apparently cylinder 1 was also starting to go bad). This had to be replaced along with a bad radiator fan assembly. After looking online, there have been very similar issues with other Pacifica engine head gaskets, so we decided to file a report.

Filed Dec 21, 2022 · Electrical, Engine · TX

My car has had an electrical fire/smoke smell with no check engine or other warning lights on. No signs of overheating, etc. and now I=has been having. a hard up and down shift. Today while stopped at a light smoke was boiling out from underneath the hood.