2018 CHRYSLER PACIFICA Complaints

2018 Pacifica with 3.6L engine. Blown head gasket at 69k miles with coolant leaking into cylinder 5. The engine is very hesitant upon acceleration and can be dangerous when pulling out into traffic. This is an all too common issue and needs to be addressed by Chrysler. Engines should not be failing this at 69k. I change oil every 4k miles which is way ahead of the recommended schedule by Chrysler. Coolant was done by the dealer after radiator replacement for a radiator leak at 52k miles.

On February 16, 2026, my vehicle was diagnosed by Safford Brown Chrysler Dodge Jeep Ram with a failed catalytic converter/manifold. While I am approximately 17 days past the 8-year calendar window for the Federal Emissions Warranty, my vehicle has only 77,337 miles. This is 2,663 miles below the 80,000-mile federal limit. The failed Bank 2 Maniverter assembly has a confirmed crack that allows raw exhaust fumes and carbon monoxide to enter the vehicle cabin via the HVAC system. Warning lamp appeared on 2/13/26.

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.

electronic stability control light came on and car shook. states I need to service it.

The mid-row driver's side seat release cable suddenly permenantly lost all tension, preventing the seat from latching into place both during operation and while stationary, leading to it sliding forwards/backwards with the vehicle in motion. The seat that experienced the failure is at present still avaliable for inspection - and the issue occurs frequently enough that a DIY fix can be found online. However, given that the faliure occured without any human interaction with the failed component, it seems prudent to report it here. No warning lights or prior symptoms appeared prior to the issue surfacing. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owned a 2018 Chrysler Pacifica. The contact stated that while in reverse(R) and reversing into a parking spot, it was difficult to accelerate over a patch of ice. The contact depressed the accelerator pedal, and the vehicle accelerated quickly and failed to stop while depressing the brake pedal and the vehicle drove through a fence and crashed into a brick building and stopped. The contact stated that prior to the failure, the U-Connect phone feature disconnected independently. The failure had never occurred before. The contact stated that the U-Connect failure might have been linked to the unintended acceleration failure. No injuries were sustained. A Police report was not filed. The fence and a side of the brick building were damaged during the crash. The vehicle was initially towed to the residence before being towed to a Collision Center, where the vehicle was deemed a total loss by the Insurance Provider. The vehicle was destroyed. The manufacturer was not notified of the failure. The failure mileage was approximately 159,000.

At 120,000 miles the head gasket has started leaking into the cylinders. We are unsure if it is reparable or if I will require a new engine. This is a know problem with Pacificas and is an issue they should be fixing since the problem is on the engine part they installed.

As I was leaving the gas station the Check engine light flashed on and off then the car was like turning on and off fast and a loud clunk sound and the Fuel pump module exploded gas sprayed all over the gas station. Huge fire hazard and the car began to smoke Vehicle experienced a sudden catastrophic fuel system failure involving fire risk and loss of propulsion. The incident occurred without warning and created a serious safety hazard to occupants and surrounding traffic. This vehicle is a Chrysler Pacifica Hybrid. Similar failures involving fuel system and hybrid control logic have been widely reported. The manufacturer was contacted but declined to properly document the safety incident. This failure is not consistent with normal wear and tear and represents a potential safety defect. Key details to include when submitting online: - Sudden loss of propulsion - Fire risk / fuel involvement - Hybrid system interaction - Manufacturer declined to document incident

I am experiencing a serious brake safety issue involving the brake booster on my Chrysler Pacifica. When braking, the pedal becomes extremely hard, pushes back against my foot, and requires excessive force to stop the vehicle. In some instances, when I am at a complete stop, the brake pedal pushes upward and the vehicle begins to move forward on its own. This issue causes a loss of braking assist and significantly increases stopping distance, creating an unsafe driving condition and risk of collision. The problem occurs intermittently but has worsened over time. Chrysler/Stellantis has acknowledged this brake booster defect by issuing a warranty extension; however, they have not issued a safety recall. I was denied repair coverage solely because my vehicle is now outside the extended warranty period, despite the fact that the defect is known and directly affects braking performance and vehicle control. This is not normal wear and tear. It is a failure of the brake assist system that compromises safe operation of the vehicle, whether driving at speed or stopped in traffic. The condition presents a clear safety risk to occupants and others on the road. I am submitting this complaint so NHTSA can investigate whether this defect warrants a formal safety recall.

The steering has been sticking causing oversteering at different speeds. This has been getting progressively worse as time has gone on. This is a serious issue as the oversteering to get the car back in a lane is going to cause a serious accident especially at higher rates of speed on the interstates.