2018 Jeep Wrangler: sudden loss of power

Filed Sep 24, 2026 · Electrical · NJ

I had Recall issue occur on my 2018 Jeep Wrangler JLU #19A Clutch Assembly. The issue also damaged the Transmission as stated possible in the recall. Additionally the dealership reported that recall required replacement of the cluster (Instrument cluster with all gauges). This was all done. However, upon picking up the jeep and driving home, I realized that the cluster was no longer showing what gear the car is in. I called and reported to the dealer. They asked me to bring in as they though might be a software update or something, they would hook to machine. In the meantime the jeep started experiencing issues where every emergency light on cluster would go off. I would lose power steering, and I could not even turn the car off. I had to stall the car to get engine to stop. I took back to dealer (Cherry Hill Jeep) the reported the "star connector" or Can C-Bus Connector needed to be replaced. I explained that this never occurred prior to recall issue so it must be covered. they said they did not know. They replaced. I went to pick up and still the car did not show the proper gear. after further review by the dealer, they believe they received and installed the wrong cluster. This cluster now caused a problem with the Can C-Bus connector, and the car still does not show what gear it is in. All cars show what gear the car is in. this jeep currently does not. the dealer claims that the software update does not include the gear. This is not how i purchased the car or how i dropped it off prior to recall issue. Dealer is trying to charge me for labor of Can C-Bus connector and install for over $1000 and the car still does not show the gear. I have claim with Stallantis #98090202 they keep pointing to dealer. Dealer keeps pointing to Stallantis. A car must show the gear. This is safety concern to drive the car.

Filed Aug 27, 2026 · Electrical · MD

Suspected CAN bus failure causing multiple dash lights intermittently to include loss of power steering while driving causing an immediate safety concern.

Filed Jul 13, 2026 · Engine, Fuel system · CA

I purchased this 2018 Jeep Wrangler JK Unlimited on July 19, 2025. Since purchasing the vehicle, I have experienced repeated mechanical failures that have required multiple repairs. The most serious issue involves the engine overheating at highway speeds without any visible coolant leak or clearly identifiable cause.Despite seeking professional diagnosis, the source of the overheating could not be determined. Shortly afterward, the vehicle developed a P0302 (Cylinder 2 Misfire), raising concerns about possible internal engine damage caused by the overheating.I believe this presents a significant safety hazard. An engine that overheats unexpectedly while driving at highway speeds can lose power or fail without warning, creating a dangerous situation for the driver and surrounding traffic. The vehicle has become unreliable and unsafe to operate because I cannot predict when it may overheat or experience another engine failure.As someone who often drives alone, I no longer feel safe taking this vehicle on long trips. I am concerned that the vehicle could leave me stranded on a highway or in a remote location without warning, placing my personal safety at risk. A vehicle should provide dependable transportation, not expose its occupants to the possibility of sudden mechanical failure.This vehicle has spent more time in repair facilities than on the road. I have incurred thousands of dollars in repair expenses, and I am now being asked to pay for an engine teardown simply to determine the cause of the failure before any warranty consideration can be made. Despite multiple repair attempts, the underlying cause of the overheating and engine problems has not been resolved.I am submitting this complaint because I believe the repeated overheating, unexplained engine malfunction, and resulting cylinder misfire may indicate a safety-related defect that warrants investigation. I request that the review to determine whether similar failure whether a broader safety issu

Filed Jun 23, 2026 · Brakes, Steering · 91,300 miles · NH

The contact owns a 2018 Jeep Wrangler. The contact stated that while driving 20 miles away after an hour, the vehicle lost power steering and power braking functionality, and the transmission unexpectedly downshifted to a lower gear. The vehicle was turned off. The check engine warning light was illuminated. The vehicle was towed to the residence. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 91,300.

Filed May 16, 2026 · Transmission · GA

While driving my engine light comes on and I lose power like it won’t take gear I can switch to manual and it’s fine engine light pulls a code for oil pressure sensor but I’ve done paid for that to be fixed and it still doing the same as above but the engine light will go off after cutting the jeep off and stays off for a few days then out of nowhere while driving it comes back on and the process starts all over

Filed May 4, 2026 · Electrical, Steering · MS

One day out of the blue, my Jeep Wrangler received a "Service Shifter" error code. The error code threw about 40 other codes at the same time. Loss of power steering, loss of abs, engine kept revving on its own, windshield wipers turned on. While in park it felt as if it was trying to shift itself into other gears. Loss of steering while driving as well as the engine revving up and down while on the interstate. Every warning light came on and stayed on. I can let it sit for awhile and it'll drive fine for a little while until it does it all again and again. I have not taken it to a dealership yet due to all the threads on being charged $2000 and it not get fixed.

Filed Mar 30, 2026 · Engine, Fuel system · NC

The vehicle is a 2018 Jeep Wrangler with a 3.6L engine and approximately 124,000 miles. The engine has experienced a failure involving multiple components, including suspected head gasket failure, significant oil loss with no visible external leak, low oil pressure, and engine knocking. Diagnostic trouble codes P0365 and P06DD were present, indicating camshaft position sensor issues and oil pressure control failure. The vehicle is available for inspection upon request. This condition creates a safety risk due to the potential for sudden engine failure and loss of power while driving, which could occur without warning and increase the risk of an accident. The problem has been confirmed by an independent repair facility, which identified low oil levels, coolant loss, and symptoms consistent with internal engine damage. The vehicle has not been inspected by the manufacturer. Prior to the failure, warning signs included a low oil pressure condition and engine performance changes. These symptoms developed rapidly over a short period of time. The vehicle is currently not safe to operate due to the risk of further engine damage or sudden failure.

Filed Jan 29, 2026 · Engine, Transmission · FL

Vehicle equipped with a 3.6L Pentastar V6 engine developed loud ticking noises, engine misfires, and loss of power while driving. The vehicle hesitated during acceleration and could not reliably maintain speed, creating a safety risk in traffic. An authorized dealership pulled diagnostic trouble codes, acknowledged the abnormal ticking, and advised the failure was likely related to the camshaft, lifters, and rocker arms. The vehicle was then taken to an independent mechanic for further inspection. The independent mechanic confirmed failure of the valve train and camshaft components, requiring replacement of the passenger side intake camshaft (Bank 2), cam phaser, phaser bolt, and all lifters and rocker arms. Photos of the failed components are available. The defect was confirmed by both a dealership and an independent repair facility. Issue presents risk of sudden loss of power while the vehicle is in motion.

Filed Jan 3, 2026 · Acceleration, Engine · MN

The jeep lost power while I was driving. The lights stayed on but jeep came to a stop. I touched the key area and it started running again.

Filed Dec 26, 2025 · Fuel system · IN

The vehicle experienced a fuel/propulsion failure involving sudden loss of engine power. After internal engine repairs performed by the dealership (camshaft and valvetrain work), the vehicle was returned to me as repaired and safe to operate. Within minimal post-repair driving (less than one mile), the vehicle entered limp mode, lost propulsion, and the engine shut down while driving in active traffic. The vehicle required towing back to the dealership. The loss of propulsion occurred on a busy city roadway and created an immediate safety risk to me and surrounding motorists due to the sudden inability to maintain speed or power, with a foreseeable risk of collision. The problem has been confirmed by the dealership. After subsequent inspection and teardown, the dealer documented catastrophic internal engine damage, including cylinder wall scoring and a failed head gasket. The dealership acknowledged that deeper inspection during the prior internal engine repair would have revealed the need for engine replacement. The vehicle has been inspected by the dealership multiple times and by the dealership’s insurer. The manufacturer (Stellantis) has opened a customer care case. The vehicle is currently available for inspection and has been removed from service due to safety concerns. Prior to the failure, the vehicle displayed warning indicators and messages at the time of the incident, including limp mode activation and critical alerts immediately before and during the shutdown. No warnings were provided to me at the time the vehicle was returned from repair regarding unresolved internal engine risk or potential loss of propulsion.

Filed Oct 29, 2025 · Electrical, Engine · CT

On August 6, 2025, while driving at approximately 65 mph on the highway, the vehicle experienced a sudden and total loss of motive power. The engine warning lights illuminated, and the vehicle would not accelerate, forcing an emergency maneuver across multiple lanes of traffic to reach the shoulder. This failure occurred just one day after a warranty repair for the same issue, and followed a previous 199-day repair for a known camshaft defect. This sudden power loss in highway traffic created an extreme and unreasonable risk of a high-speed collision and serious injury.

Filed Oct 23, 2025 · Engine · NC

The Check Engine light illuminated and diagnostic code P219A was recorded (Bank 1 Air/Fuel Ratio Imbalance), and the engine has a ticking noise. The dealership has indicated the issue likely involves the valvetrain/rocker arms/lifters and will require engine internal repair (valve cover removal, spark plug replacement, possible rocker arm replacement) estimated at ~$2,900-$4,500. The 3.6 L Pentastar engine has been the subject of numerous owner complaints of ticking noise, power loss, misfire, and premature valvetrain failure. I understand there have been related Jeep Technical Service Bulletins (such as 09-002-14 and 09-008-18) addressing these types of failures. A class action lawsuit (Maugain et al. v. FCA US LLC) alleges defects in the 3.6L Pentastar engine’s valve train (rocker arms, lifters) and failure to disclose the defect. Maintenance History: Regular oil changes (every <6,000 miles) at approved service centers; no prior major engine internal repairs. Concern: The defect affects engine performance, may lead to catastrophic engine failure, and potentially reduces safe vehicle operation and control (power loss, hesitation). Relief Sought: I request the federal safety agency open a vehicle safety defect investigation and compel FCA / Chrysler / Jeep to evaluate this condition under recall criteria.