2018 Chrysler Pacifica fuel/propulsion system problems

“My van has been reliable for 5 years until recall 73B was performed. Ever since it's install I have had 7 repair attempts and 250+ days out of service. Each repair attempt is preceesed by check engine lights, service hybrid system, check electronic throttle control, red wrench, blind spot temporarily unavailable, (occasionally) service airbag, service shifter, and stability control lights. Chrysler has been unable to fix this issue. They have replaced the abs module, 12v battery, can bus's, wiring, battery coolant heater, eflite motors and reducers, 400v battery, and the under hood wiring harness. Engineering has been involved, star cases opened, and technicians flown in to address these issues. The DTC code scans reveal many communication codes, both active and permanent. The last scan had 23 active codes. No one can tell me if this van is safe to drive, I don't think it is. I have had no drive events, and lost power steering momentarily at highway speeds. The latest incident had the messages start appearing at 45 mph. This can is unfit to be on the road, and stellantis does not seem to be able to fix it”

“Yes, the problem has been reproduced by the technician. When you put the car in reverse, it would start to go in reverse and as soon as you let off the throttle or the gas pedal, it would go forward at 15 to 20 mile an hour as you slammed your other foot on the break that’s without you even touching the gas pedal. I was sitting in a stoplight and all of a sudden the car wanted to go 55 mile an hour. And I had to slam on the brakes to keep from hitting other cars. Right immediately after that when I was trying to find a place to pull off the highway the car by itself decided to slam on the brakes or at least that’s the feeling that it gave because while I was trying to go to the car come to an abrupt stop right in the middle of the highway. Through all these different scenarios the thing that happened happened while I was not touching the gas pedal. This is why I feel like it’s a major safety concern not only for me and my family but other families that are out there driving also for everyone else that has bought this car and has the potential for the same thing to happen to them and they may or may not know what to do in that situation . We had the vehicle…”

“The manufacturer's mandatory 73B Safety Recall update (Vehicle Fires) creates a critical software-induced communication failure on the central vehicle network. Following the 73B flash, the vehicle developed an Active SGW U0001-00 CAN C Bus network fault, which permanently blocks data transmission and triggers an HCP U0412 hybrid battery fault. This network crash disables the hybrid propulsion systems, creating an unpredictable and hazardous driving condition. The manufacturer (Stellantis) and its authorized dealer (Seattle Jeep) are refusing to remedy this safety recall side effect under the vehicle's Hybrid Powertrain Warranty, instead forcing consumers to pay out-of-pocket diagnostic fees ($284.67) and multi-module software update fees ($812.50) to correct a defect injected by the recall software itself. This directly compromises vehicle safety and violates federal recall remedy mandates.”

“Chrysler performed the 73B recall and n my van in August of 2025. Ever since performing this recall the van has a continuous stream of check engine lights and error codes. The van has been at the dealership at least 6 times for well over 100 days. The check engine lights and error codes always return. The hybrid battery recently had a failure code, and was replaced. I didn't even make it home before I got a check engine light and error codes. The dealership cleared the check engine light and sent me on my way. The codes returned and the van is back at the dealership. The codes I have been getting are : Service Hybrid System, Parking Brake Temporarily Unavailable, Service Electronic Throttle Control, Service Shifter( I was not able to drive as it wouldn't go into gear), Service Electronic Stability Control, Blind Spot Alert, and Service Airbag System. On the longest service visit (over 80 days), Chrysler ended up just telling the dealership to erase the stored codes and return the van to me. They test drive it 50 miles. The error codes returned. They currently have the van again for the same reason.”

“While traveling 350 miles from my home with my family of five, the vehicle experienced a sudden 'Loss of Motive Power' event. The dashboard displayed the message: 'Stop Safely - Vehicle Will Shut Off Soon.' I lost the ability to accelerate and had to navigate to the shoulder in high-speed traffic. The vehicle is currently inoperable and the 12V battery has since died because the Power Inverter Module (PIM) has stopped maintaining system voltage. This vehicle had Recall 03A (NHTSA 23V-010) performed on July 7, 2023, and the more recent Recall Y40 update performed on March 11, 2026. Despite having the 'latest software remedy' installed less than 30 days ago, the vehicle suffered the exact safety failure the recalls were meant to address. This proves that the software-only remedy is insufficient to prevent the hardware failure (internal transmission wiring short). A formal Vehicle Scan Report performed at Lake Norman Chrysler (Dealer 60945) on 3/30/26 explicitly shows 'Distance Travelled with Light ON: 146 miles' (Page 14), documenting a sustained failure of the motive power system. Furthermore, the dealer’s own certified technician (J. Olmstead) provided a…”

“Vehicle went into limp mode Twice. 1st time on 10/28/24, Technician found fault for Hybrid Battery pack, Chrysler technical service bulletin said to clear fault then drive, if fault did not come back release the vehicle Work order stated, Bring vehicle back if it happens again and replace hybrid battery. 2nd time, 2/06/2026 vehicle went into limp mode again while driving. My safety and the safety of others was put at risk as I was driving on a highway at 65 MPH and suddenly without warning and no braking involved went down to 20 MPH. A very unsafe maneuver as the following vehicles had no indication I was braking or Slowing down. The dealer has confirmed the limp mode incident but so far has been unable reproduce it. The vehicle and components have only been inspected by the dealer. The warning lamps and messages only came on as the event unfolded. A sudden and uncontrollable loss of power. The dealer states that they believe the hybrid battery pack is failing, but Chrysler, Stellantis will not replace the hybrid battery pack unless the dealer can reproduce the incident. Extremely dangerous thing to try and recreate.”