This ZF9 transmission is a huge piece of junk and doesn't just impact the Jeep Cherokee kl. I've owned my 2015 Cherokee since new and it has never shifted properly. Dealership replaced at less than 1,000 miles and won't do anything else except a "quick learn" procedure which is bogus and wastes my time. It clunks/slams gears between dog clutches, I have to floor it to get it to downshift (and it'll go from say, 5th gear to 2nd gear, causing peel outs), the shift quality is awful especially in lower gears; it hesitates between R and D (sometimes 2-3 seconds), and doesn't get any better after several dealership visits. Sometimes it's as if the car is confused and lets me rev close to 4K RPM before it figures itself out. I missed out on the class action lawsuit - please NHTSA do something. These Cherokee continue to have faulty transmissions and I'm tired of fca blaming zf and zf blaming drivers and manufacturers. This has been an absolute unmitigated disaster and I'll never own another vehicle with a zf transmission. Jeep dealerships have no idea what they're doing. How has zf remained unscathed? this is a huge safety liability - if my vehicle can't utilize the transmission it was given correctly then it's an unsafe vehicle. The biggest safety issues: 1. I cannot merge normally onto the highway - I have to floor it to downshift and in many times it's too much power and causes torque steer. 2. it does not downshift correctly when slowing down, which causes the car to almost stall mid-turn until again, I floor it, and it peels out around the corner. Absurd.

- Englewood, CO, USA

I was at a red light trying to make a right turn. Suddenly, the car stalled. My steering wheel was also frozen that could not be turned anymore. The dashboard displayed "shift the gear to P". my steering wheel was also frozen that could not be turned anymore. After I did that, I was able to restart the car. This happened on a city street but still very scary due to stalling. I checked online and it seems there was a recall about stalling before, but I was not contacted by Jeep; and I did not send my car anywhere for this matter.

- El Cerrito, CA, USA

I received the recall on the 2015 Jeep trailhawk. This is regarding the ptu and roll away problem. Chrysler admits that it has no remedy for this problem. A computer patch is it. That is not acceptable when you don't know that it will work. This manufacturer should be made to buy back these vehicles. First it was the defective transmission that is now replaced in my car. The same defective transmission that was in there before. Doesn't your organization have any power to force these manufacturers to buy back these cars as these vehicles are defective and unsafe to drive. The other day I started the car in park and it said that I was in 4 wheel drive.consumers pay a lot of money for a car and the manufacturers put out junk. Someone needs to stand up for the consumer.

- New Braunfels, TX, USA

While driving vehicle on highway at 55 mph dash lights start blinking on then off several times. As I lifted my foot off the accelerator the vehicle completely shut off right in the middle of the highway! I shifted into neutral and restarted engine. Then as I stopped at a red light the engine shut off again while auto start /stop was disengaged as I restarted the auto start stop light came on and vehicle started. I continued to drive the vehicle. As I drove the dash lights continued to flash on and off, now the engine light came on and will not go out? the vehicle is a safety hazard to both my family and other motorists, as to the fact that the engine shuts down at will with out notice or warning of any type. Thank you please help me I do not want to die from a crash because of this problem!

- Steubenville, OH, USA

When driving, the service shifter light will come on and then all of the lights on the gear shifter (P, R, N, D,1,2) come on. You have to put the car in park and shut it off to clear the issue. You also have to deal with the concern that the shifter won't work when you try to switch modes.

- Buchanan, MI, USA

An error that continues to come and go is to 'service shifter.' It is apparent there are moments that the shifter sputters, the car will not shift gears (automatic) and refuse to accelerate. The check engine light also comes on for this. Deal ships do not seem to act aware of this issue, but it seems extremely prevalent online. It appears to be based on a faulty shift in the vehicle or bad wiring. However, the deal ships act like nothing is wrong but will change it for you for around $7,000. The car sputtering and refusing to shift while trying to accelerate is extremely dangerous from faulty components and needs to be investigated. It's clear a recall is needed for this.

- Louisville, KY, USA

The contact owns a 2015 Jeep Cherokee. The contact stated that while attempting to accelerate from a stop, the vehicle hesitated with the service transmission message displayed on the instrument panel. The failure recurred while driving up an incline. The cause of the failure was not determined. Gulfgate Chrysler located at 7250 gulf fwy, houston, tx (281) 477-6767, was contacted and notified of the failure. The contact referenced NHTSA campaign number: 20V343000 (power train) however, the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 79,000.

- Houston, TX, USA

My child purchased vehicle (used) from dealer (mi.- approx.43,820).discovered powertrain issues w/ vehicle that I believe are related to previous recall (re:Chrysler recall # S55). While driving vehicle it will go into neutral and engine revs up, resulting in loss of forward motion. This happens intermittently.the check engine light and service trans. May come on, but will go out. Vehicle was taken back to dealer regarding the problem. Serviceman reccomended replacing transmission at a cost of over $5000. Prior recall service on vehicle (11/2016) shows the problem as the transaxle range sensor wire harness, but the PCM and the tcm was re-programmed. This was done twice according to the vehicle records. We spoke with the dealer and mfg.about replacing the wiring harness, since the recall indicated that could possibly be the problem due to bad crimping. Took the vehicle back to the dealer to diagnose the problem. They indicated that they checked the wiring harness and found no problem. It appears the dealer and mfg.not willing to take ownership of problem, leaving the consumer (my daughter) with a continuing intermittent issue and the cost of resolving it...(very disappointed!) also, the vehicle still has the trouble code that they can't clear (code= P1db7) note that the vehicle had less than 100,000 mi when this issue was bought to their attention, but mfg. Won't honor powertrain warranty because she is not the original owner. Dealer willing to replace trans. At cost of over $5000...

- Mineral, VA, USA

Oil filter adapter housing is leaking. It was found by technicians during an oil change.

- Dillon, CO, USA

Our 9 speed transmission causes the car to jolt and jerk every time we drive it when switching gears or when at a stop and then driving. Also, does the same with the star/stop feature. This can cause a major accident if not fixed! Jeep dealership says they get multiple complaints about this issue weekly since the 9 speed transmission has many issues with it and was used on 2014-2016 Jeep Cherokee. We have taken the car to the dealership over 10 times throughout the past couple years to get the transmission fixed but the only way to solve this issue is to replace it with an 8 speed transmission.

- Bellevue, WA, USA

Transmission has issues. Hard shifts, slow shifts, jerks, and hesitates. Feels like it is low on fluid, also feels like someone rear ended us at times. Have actually slammed on the brakes thinking we were in a wreck. Has happened many many times. Vehicle has been in shop numerous times with no fix.

- Keene, TX, USA

At startup of vehicle in park and keying on, powertrain problems with transmission. Vehicle has check engine light, 4WD temporarily unavailable, service park brake, service transmission, flashing traction control all happening at the same time. While in motion, transmission will shift but is very rough and starts in 4th gear. Also the 'd' is flashing and odometer flashes while in motion.

- Nashville, TN, USA

The vehicle sometimes hesitates to accelerate when stepping on the gas after coming to a rolling stop or a complete stop. This happens with the auto start/stop off. I just purchased the vehicle and this happens almost every other time I drive.

- Eagan, MN, USA

Vehicle jumps back when exiting off interstate at high speed to lower speed. Once yielded or stopped and hit gas pedal to move, vehicle jumps, pops, doesn't engage to move forward on acceleration. When stopping at a sign, have to be completely stopped so vehicle kicks back then when accelerating, there is a hesitation. Vehicle kinda leaps forward at faster speed then what pressure is on the gas pedal. This has happened numerous times.

- Poquoson, VA, USA

Has check engine light on and says service park brake. The traction and parking brake light is on. It will not shift into gear. Jerks really bad and makes a loud noise when you can get it to shift. My Jeep was parked out front of my house.

- Mount Vernon, IN, USA

Shifter--the vehicle is rendered inoperable when shifting from park to reverse or to drive. While we've tried to find a pattern, the issue's recurrence is unpredictable and has yet to be diagnosed despite countless trips to and conversations with our dealer and with Chrysler. This is the second report we've filed about this vehicle with the NHTSA (6/19/18). Summary: The dash displays/flashes "service shifter"/all other component lights, warning bells ring and every gear light on the shifter lever illuminates. Some incidents prevent the vehicle from shutting off/restarting or for the brake pedal to depress. We've learned we must shut the car off and restart, sometimes 2-3 times, in order for it to become operable. The check engine light stays on for varying amounts of time. The issue has occurred while driving and for our safety we must stop, shut down and restart; it also has occurred while attempting to pull out at an intersection or out of our driveway, both of which are frightening since we find ourselves stuck in the path of oncoming traffic. Acceleration issues--in addition, abrupt lurching forward, hesitations after stopping and lack of acceleration power (gas pedal is to the floor but car won't pick up speed) have occurred. We have had it to two dealers only to be told that the check engine light must be on to diagnose; the one time it was tested, the event wasn't active and the codes were stored (over 40 were displayed) and of no help. They only will say that the car is losing communications and despite all that's been done to this point, can't guarantee they'll ever be able to determine a fix for it. The PCM has been reprogrammed four times; tcm has been replaced/updated four times; shift lever assembly replaced; shift lever greased; trans axle wiring harness replaced two times; shift lever bezel/wiring replaced.

- Cabot, PA, USA

Immediately after starting vehicle, all lights on shifter (P R N D) turn red. Service shifter appears in display and remains until vehicle is turned off. Will not display odometer or any other info while service shifter is displayed.

- Bristow, OK, USA

Zf 9 speed transmission, it is not safe to operate in a low speed city driving condition, at a low speed when I press gas car wont move and then suddenly car jumps. Just like when you release clatch in a manual car at a high RPM,

- East Elmhurst, NY, USA

This has happed to over 20 times. When putting my automatic transmission in reverse, the screen displays ' service shifter' I have taken to two dealers and was told they could not duplicate because code resets itself. I am worried as I am a senior citizen and need a reliable vehicle. It seems the dealer can't be bothered to find the problem

- Middle River, MD, USA

Oil cooling housing cracked it cost me $624 to replace. The housing is made of plastic, there's no way that's going last with the heat of the engine

- Minneapolis, MN, USA