W84 Powertrain Software- July 30 2022 Jerry Seiner Casa Grande Dealership technicians inspected and reprogram the PCM and TCM software and closed the recall but 2 months later all the lights on my dashboard came on check engine light service shifter park brake etc. I went back to the dealership and the advisor told me to go to the dealership where I bought it from. I ended up going to Larry Miller Chrysler Jeep Avondale in Arizona. The vehicle was braking on its own while driving high speeds on the highway and while driving I almost crashed. My vehicle was in and out of the dealership many times and the technicians didnt seem to know what was wrong with the vehicle. Almost 6 months after the initial problem it seems its fixed. 01/13/2023 was the last time I had to return because the dashboard lights were turning on after driving the vehicle an estimate of 100 miles.

- Casa Grande, AZ, USA

Leaking a lot of oil to the point I had to refill every week.

- Chicago, IL, USA

When driving my jeep the dashboard will randomly give me a warning to service my shifter and all of the lights on shifter will go red. I have to turn my jeep off and back on for the lights to go back to normal. I have had to replace the power transfer unit due to the 4 wheel drive not working anymore. I took my car into the dealership to the PCM W84 Recall and two weeks later my transmission fluid exploded and the engine was smoking. Had to replace the heat ignition coil and the inlet hose. Paid $2,000 to repair and a week later my check engine light came on and now my car is overheating. Took it to the dealer and they added coolant and said it was an air bubble in the coolant. A couple of days later the issue happened again, took it in two more times and they filled the coolant, but now saying that the cylinder head gasket needs to be replaced which is another $1,700.

- Orem, UT, USA

While driving the vehicle suddenly and unexpectedly stops running without any warning. Engine stops. Car just coasts. PRNDL indicator (D for drive) on instrument cluster flashes instead of a constant D. Then some sort of messages comes up similar to "shift to neutral to start engine". Car will not restart. Car coasts to stop without power and no power steering. Then I need to turn ignition off. I will then cycle locks (locked then unlocked). Then turn on ignition. From here the car attempts to start but it is not an immediate start up like normal. The gauge needles (speedometer and tachometer) both go all the way to the right while the car attempts to restart but this startup takes about 10+ seconds of attempted cranking to finally restart. This is a long clicking sound before restart. This has happened 3-4 times now in the 30 days. Most recently on a main road where I had to coast without power and power steering to the shoulder. I have not yet been to the dealer. Car is out of warranty.

- Howell, MI, USA

When accelerating the vehicle has a hard shift every now and then that-??s very noticeable. Seems to be slipping or having trouble shifting occasionally when trying to get up to speed.

- Carlton, GA, USA

Vehicle turns on but will not start. Changed battery and spark plugs

- El Paso, TX, USA

UNKNOWN. When driving my Jeep there will be times where I go to accelerate and my transmission will jump. Also while I-??m driving all of my gears on my shifter will turn red and a message will pop up saying service shifter. It-??s been happening for a few years but the last time it happened was today 7/22/2022.

- Pittsboro, NC, USA

On numerous occasions the car engine just shuts off or loses power. This happens consistently. The car has been taken to the dealership where it was purchased and was told "could not duplicate problem". This just happened again yesterday on a main street posted at 45 mph, where engine just shut off. Making left turns has become a gamble as power response is not there. This is a dangerous situation.

- Parkland, FL, USA

The incident happened in a parking lot. Backing out of the parking space, there was a delivery truck parked right behind me. Backing out of my parking space, I hit the bumper of the truck (no damage to the truck). As I pulled back into my parking space the vehicle accelerated very rapidly in a distance of approx. 25 feet; the acceleration seemed "Hell cat" like. Slamming my foot on the brake did not help. The vehicle then hit a brick retaining wall deploying multiple air bags and causing enough vehicle damage that the insurance company declared it totaled. It is amazing that the vehicle hit the brick wall with enough intensity to deploy the air bags and cause considerable front end damage after traveling such a short distance (approx 25 ft). The vehicle is in the insurance company's possession. As such, I do not have access to the vehicle. Had the brick wall not been there, the vehicle could have hit other vehicles or pedestrians and I was lucky to only have minor bruises and abrasions. There was no warning what so ever that this was about to happen.

- Royal Oak, MI, USA

The 'service shifter' code keeps showing up. The car shifts and drives fine when it happens but it concerns me because I've read where a few people have had the car accelerate by themselves when this happens.

- Taylors, SC, USA

The contact owns a 2017 Jeep Cherokee. The contact stated while driving 50 MPH across a bridge, several unknown warning lights illuminated and the vehicle lost motive power and stalled. The contact was assisted by a Police Officer to move the vehicle into a service station. After restarting the vehicle, the vehicle was driven to a dealer where the warning lights again reappeared. The vehicle received unstated repairs, but remained at the dealer. The manufacturer was notified of the failure. The approximate failure mileage was 60,000.

- Stone Mountain, GA, USA

The engine consumes a large amount of oil. I regularly have to add 1qt/ 800-100 miles. The engine will just stall if the oil level gets too low without any warning. In Alaska this poses an extreme hazard, especially in the winter.

- Chugiak, AK, USA

The car will shut off unexpectedly while driving. This is extremely dangerous. This is the 6th time in the last 3 years that this has happened.

- Wayne, NJ, USA

Engine and car was not warming up with remote start. Finally check engine light comes on. Code P0128 thermostat. Repaired 1/28/2021 @ 85762 miles. All antifreeze replaced. $600+ repair. 2/1/2022 same observed failure of engine to warm up during remote starts. 2/6/2022 check engine light comes on with code P0128. Again, thermostat failure. Miles 111,000. This appears to be a repetitive symptom of cherokees 2014+ with 2.4L engines. This can cause serious engine damage.

- Marion, KY, USA

The contact owns a 2017 Jeep Cherokee. The contact stated while driving at various speeds, the vehicle inadvertently stalled without warning. The vehicle was not taken to a local dealer to be diagnosed. The manufacturer was not informed of the failure. The approximate failure mileage was 63,000.

- Hull, MA, USA

Heater hose broke while on the freeway causing all of the antifreeze to leak out and car to overheat with no warnings signs. Car started shaking and I pulled over and it shut off. Turns out the heater hose is made with two tubes connected toghether and the hose broke where the connect.

- North Hollywood, CA, USA

When stopping to turn the engine cut out while we were attempting to turn left. The car then alerted us to put the car into neutral to start ( Shift To Park Or Neutral Press Break + Select Gear.) We attempted to do as much in the middle of the intersection we were stuck in, posing a safety risk since we were in the middle of a left hand turn with on coming traffic. The lights, radio and dash were working at this point. We put the car into neutral and pushed it safely out of intersection and attempted to restart the engine, at this point the engine wouldn't turn over and there were no alerts. I called AAA for assistance. The service man who came out jumped my battery and got the car started. He informed me he gets many calls about Jeep Cherokees doing this and if a jump doesn't work he ends up towing the vehicle. I was able to drive the Jeep Cherokee back home since I didn't live too far away but as soon as I turned off my vehicle and tried to restart it the engine refused to turn over again and I got a check engine light. I attempted to start the Jeep Cherokee the next morning and was given a change oil soon message but nothing else, the engine wouldn't turn over, I called AAA for a tow to the mechanic. The next day the mechanic called me letting me know the car started right up for him and he changed my oil. He then ran diagnostics to see if anything came up. Nothing did, he also test drove it three times and started it six times to make sure it was running and told me that everything seemed OK but he read online that low oil levels will make Cherokee engines abruptly stop working. He advised me to check my oil before starting my car every time and report the issues here.

- Webberville, MI, USA

After the vehicle stalled I waited a minute and tried to start the vehicle again. The engine started and came up with the error "Service Shifter." The status lights for all the gears were red. The vehicle was parked on a flat parking lot and it was 55 degrees outside. The vehicle had previously run fine a few minutes before.

- Powell, OH, USA

Drove approximately two miles and stopped the vehicle. Less than five minutes later start the car again. After three to five seconds the engine stalled. Vehicle was parked in a flat parking lot. It was about 55 degrees and clear this morning. I can no longer count the number of times this has happened on my hands.

- Powell, OH, USA

After turning the key in the ignition the engine will start. After three to five seconds the engine stalls out.

- Powell, OH, USA