2017 Chrysler Pacifica Complaint Log

The vehicle shut off while driving at a slow speed, 10 - 15 mph. Lost complete power to vehicle as we where making our way through an intersection, it was very difficult to steer and maneuver. We made it across but only to put those behind me at risk. Panicked, I had not realized that on screen a message appeared on the instrument cluster, Put in Park and Start. The vehicle started right up and we were moving again. For more than 2 years we have been dealing with intermittent hard shifting and the dealer, because they are not able to replicate they say they can't diagnose to be able to fix. I don't know if it is related or not but I thought I mention it since its a common customer complaint in the Pacifica Forums. We've learned to live with hard shifting can't really afford to buy a new car now, but this stopping while driving was the tip of the iceberg. I can't have this happen on a freeway with a family of 6. Not safe. This is also a common topic on the Pacifica Forums.

Steering wheel sticks when trying to come out of a turn to a straight position. Steering wheel doesn't return to center position without a forced jerk to center. This occurs at all levels of speed and is a hazard on all roads and highways. This is very concerning, because of the possibility of over corrections that could cause an accident or road departure. Chrysler has had a recall for certain models with auto stop installed, but the problem obviously goes beyond those models. A total recall should be published for the faulty steering angle sensor, code C2205-96.

Our Pacifica's steering will "stick" when coming out of a curve. So far mostly right hand curves but is starting to stick going left slightly. This happens after driving a short amount of time and will continue the entire trip once it starts to malfunciton. It typically happens when doing normal back highway speeds in curves, i.e. 30-65 MPH. I have video evidence of these issues and have shown multiple Chrysler Service techs who say "nothing is wrong, steering is normal." The steering will continue to turn into the direction it was in even after letting go of steering wheel. Steering is supposed to return to center but instead requires an unsafe counter-directional tug of the steering wheel to get it to function properly again until the next curve. The steering wheel does this often when the curve requires the wheel to be held between the 10 o'clock positon and the 2 o'clock position. Multiple complaints online from the 2017 year group of this vehicle also. Chrysler does NOT want to fix the issues so I am resorting to reporting here. I have lost over $2000 in towing, 5 garage trips, and rental vehicle costs due to Chrysler's incompetence. 2 garages were home town type garages who also felt same issue as we did, but said since the steering is electrical, that they could not doing the work but recommended repairs from Chrysler certified garage. Why is it that Chrysler tech's see no wrongs with my vehicle? When someone is injured or dead, will Chrysler then listen?

The brakes were extremely hard to push and stop the vehicle. I took it to a local auto mechanic and they identified the issue as a failed brake booster. The repair shop replaced the booster and the vehicle is working correctly now. This is the 2nd time the brake booster has failed on this vehicle (1st repair was within the 1st year of ownership). It appears Chrysler is aware of this issue as it has extended the warranty for certain model years.

I have not gotten into an accident. I have noticed for a long time my van transmission seems to have problems shifting. I will be starting to accelerate, and when i reCh speeds between 25-55 it often feels like I have no power (more often with time) I can hear the van "revving" bur not increasing speed at the rate it should be. Then all of a sudden the transmission feels like it "catches" and it lurches forward. Making it feel like the van us going to literally fall apart, or have the enginefall out. It is a very scary!! And it is getting worse even though when this happens I have started to take my foot off the gas because it I feel something terrible will happen. However taking my foot off the gas, especially when merging is extremely dangerous (people are so agressive driving these days) and I continue to be put in dangerous situations because of this issue. I know other people are complaining about this so I do not know why a recall has not been submitted! We need this fixed. Please help us!! Also anothwr issue.. Cruise control speeds up the vehicle when going downhill. It does not ever stop from accelerating! I'm aware and always take cruise control off on big hills. But this I'd also very dangerous as sometimes I have to tap the break because the cruise won't come off with the button when this happens.

My Pacifica has random moments where the steering wheel feels really stiff while in motion. So stiff, It’s on the verge of me not being able to steer! It also has random moments where the engine will stall while I am in motion. Sometimes when I press the gas to accelerate it will have a moment of lagging then it will abruptly shift into a higher gear. I’m wondering if there is something seriously wrong and if I should stop driving it. I have four small children and I need reassurance that this vehicle is in fact safe. I’ve been hearing and reading stories of other Pacifica owners dealing with the same problems with severe consequences.

Intermittent steering failure when travelling at high speeds At speeds above 40 mph on long sweeping curves, after initiating a turn, the steering wheel exhibits a "notchy" or "catching" resistance to input when returning the wheel to the neutral (straight-ahead) position. This feedback impacts steering wheel movement resulting in a dangerous over- or under-correction to steering. The vehicle was brought to 2 different Chrysler dealers to diagnose the issue. The second dealer replaced the steering rack and pinion assembly at the owner's cost. Various internet sources show numerous customer complaints about the same steering issue for this year/make/model, so this serious safety problem is not unique to this particular vehicle.

When turning around longer corners on the highway, the steering wheel jerks and I have to yank it free. The steering column was replaced and it did not help. Now they want to try replacing the struts. The van also jerks, stalls, catches a gear and bangs at different times. Most of the time this occurs from a full stop turning into a lane. When it stalls, it puts myself and children in danger if another car doesn't slow.

Losing power like the vehicle is in limp mode. Flashes the “service lights” for multiple things including shifter, airbags, breaking system, etc. it has set the park break while in motion as well. When a computer is attached is brings up can c bus codes and implausible assisted driving codes. Also will not go into reverse when this is happening. Sometimes the shifter doesn’t work either.

RearView Display not working

After running my van through the car wash we found water leaking into the left rear interior through the roof. We took the vehicle to the dealer and they showed us the left rear seam under the roof trim was not completely sealed and had a hole in it. The seam sealer from the factory is painted in color and we had to pay to have our roof resealed due to factory defect. This could be safety related in nature due to exhaust gases from the tail pipe flowing back into the unsealed vehicle.

14 mph, the engine revved and the vehicle jerked. The contact stated that he slammed on the brake pedal to prevent a collision. There were no warning lights illuminated. The vehicle was taken to the dealer on two separate occasions. The dealer informed the contact that they could not duplicate the failure. The vehicle was not repaired and remained at the dealer. The contact stated that upon investigating, he determined that the failure was related to the transmission

The battery constantly dies. If we go 1 day without driving, we have to jump it. The screen will malfunction and black out. The sliding doors will not close requiring us to close them several times before they actually close properly. We’ve had issues with the emergency brake automatically engaging after some of the battery issues as well without indicating the parking brake is on. We’ve replaced the first battery after roughly 3.5 years, and still the battery that is less than 1 year old dies constantly. We’ve had 2 garages do diagnostics and replace parts (1 being a dodge/Chrysler dealer) and even after thousands of dollars spent to fix the problem, a week later the battery is dead again. It’s an endless cycle. We’ve also experienced jerking from the transmission while driving that did not go away after software fixes. The dates and info below are for the most recent time the battery died, which is probably the 50th time it’s died in the last year.

At 57,000 miles my 2017 Chrysler Pacifica was having a rough cold start. Engine light comes on and take it to mechanic, Cylinder 4 misfire. Spark plugs, manifold gaskets, and ignition coil replaced. Receive car back, still starting rough and check engine light appears again. Call Chrysler dealership for an appointment. They are backed up in a week. At that point the van was not driven, and dies. vehicle gets towed to the dealership- bad starter and possibly another cylinder misfire. Starter replaced, car rough starts and coolant starts leaking into cylinder black smoke coming from exhaust. Cylinder 3 misfired and now being told that either the head gasket needs to be replace or the cylinder head because it may be cracked or warped.

The contact owns a 2017 Chrysler Pacifica. The contact stated while driving 30 MPH, the check engine warning light illuminated with smoke coming from the exhaust. The contact stated that she continued driving however, later in the day the vehicle failed to start. The vehicle was towed to an independent mechanic who stated that coolant was leaking into the gasket and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was advised to take the vehicle to the dealer to be repaired. The contact stated that the manufacturer informed her that they would assist with repairs at a dealer as part of a Goodwill Program. The contact stated that the failure was an ongoing failure and that the vehicle was previously repaired for an engine failure. The approximate failure mileage was 74,000.

I have a blown head gasket and my car has been in the shop for over 3 months because the part is not available. The car has never overheated. I'm so frustrated as I know this is a known problem with these cars. The car is at the shop, sitting in pieces because of the lack of parts available.

I have a 2017 Chrysler Pacifica. There have been multiple instances recently where my car has stalled and lost power while on the road. There was a recall on it (U01) in 2018, for the powertrain control module because it was stalling and losing power. I completed the recall and did not experience issues again until the last month or so. I had taken my car in for service because it kept lurching forward when trying to accelerate from a stop. They did an update, and since then I have had multiple occasions when I lost power. I took it to the dealership after each instance and it has not been replicated, however they did see the error codes and tried to reset the vehicle. Last week they took the computer back to factory settings to try to fix it. This is a very dangerous situation since my car slows down and completely turns off in the middle of traffic. We are lucky we have not been hit by another car yet. There were no warning lamps, messages, or other symptoms prior to the power failure.

Steering "sticks" intermittently going around curves. It releases itself with a jerky action. I have been to the dealer for service. They could not simulate the problem of find any error codes. I am not alone with this issue. It poses a serious safety issue. It started it 2022 and has become progressively worse.

Since I purchased this vehicle used less than a year ago, I have had an issue with rough shifting or the vehicle feeling like it loses power then lurches when it finally shifts. Now over the past couple months I have had it in the shop 4 times, the 4th time it's at a Chrysler dealership. Check engine light comes on and is blinking, car is shaking and knocking terribly. the shaking does subside after you drive a minute and the engine warms up but the problem has progressively gotten worse each time the light comes back on as I do have to continue driving it. Now the dealership states there is condensation in the cylinder, indicated either a blown head gasket or a warped cylinder head but there is no way to know without tearing the whole engine out of the car and tearing it apart. I'm also told that with labor for a new engine from Chrysler I'm looking at about $11,000!!! and due to supply chain issues we don't know how long it will take to get the parts. I've had this vehicle less than a year and I'm over $1000 in on repairs already that have not fixed the overall problem. HELP

The vehicle will randomly lose power when going from a stop or low speed and attempting to accelerate. For example, if I am stopped at a red light and start to accelerate once the light turns green, the vehicle will not gain speed. I have to let up off the gas pedal and then I will feel a "jolt" and then the vehicle will pick up speed. The safety of myself, my kids and others were put at risk because I cannot maintain a safe speed while driving. If I am stopped to make a turn, my vehicle has lost power or wouldn't gain speed as I was turning into or merging into oncoming traffic. Also, and the most dangerous, was when I had the vehicle in reverse to pull out of a parking spot at a store. When I attempted to turn the dial knob to "Drive", the vehicle turned itself off and the dashboard flashed with a message stating I need to put it in park and restart the engine. It was very scary to have the vehicle cut off on me like that. I have taken the vehicle to the local Chrysler dealership and an independent service center. The Chrysler dealership claim they were not able to reproduce the problem but stated they would have to break the engine down to the point of failure to diagnose the problem, a minimum charge of $750. The independent service center stated they could reproduce the problem and that it was the camshaft sensor which I had replaced for $400 but the problem continued not even an hour after I picked up the vehicle. They kept the vehicle an extra day but stated they were unsure of the problem and suggested it could be transmission related and that I take it to a certified transmission repair shop. The engine light came on when the problem first began but since having the vehicle serviced at the Chrysler dealership and the independent service center, the problem continues without the engine light appearing.

Check engine light appeared on my control panel of my 2017 Pacifica on 3/7/2022. I took my vehicle to Tires Plus to have it fixed. The code that the computer was giving was P000B. It was in the shop for 3 days, they checked and tested all sensors and finally determined that it was R/R CAM PHASER SYL and 0504778AD Timing Solenoid. New parts were installed on 3/12/2022 at $125. I returned on 3/17/2022 after the check engine light came back on, the technicians thought it was a issue with the reset of the check engine light. On 3/19/2022 I returned yet again for the check engine light. Tires Plus was unable to determine what the problem and recommended that I take it to the dealer. On 3/24/2022 I took my vehicle to the dealer for the same issue. They charged my $340 to reprogram and clean the cam shaft sensor. 3/28/2022 the check engine light is on yet again and have appointment to drop back off on Thursday 3/31/2022

I have had engine problems for over a year now. My car has had constant issues with rough idling and also jerking while driving. The jerking has been fixed for now but the rough idling has became worse to the point where the car feels as if it will stall out. My car has been at the dealership for repair since 12.22.22 and is still there today 1.11.23 - I was told by another repair shop (while getting brakes and an oil change ) that my car had 3 holes in the crankshaft and that was a problem because there should only be 2 holes. The dealership has replaced an EGR and now is talking about something on the engine to replace (but not the whole engine) and they have still not looked at the crankshaft to see if there are the incorrect number of holes. This is my primary vehicle and no one can seem to fix the problem

The contact owns a 2017 Chrysler Pacifica. The contact stated that while driving below 20 MPH, the engine revved and the vehicle jerked. The contact stated that he slammed on the brake pedal to prevent a collision. There were no warning lights illuminated. The vehicle was taken to the dealer on two separate occasions. The dealer informed the contact that they could not duplicate the failure. The vehicle was not repaired and remained at the dealer. The contact stated that upon investigating, he determined that the failure was related to the transmission. The manufacturer was made aware of the failure. The failure mileage was approximately 34,000.

The contact owns a 2017 Chrysler Pacifica. The contact stated that the vehicle was leaking oil. The contact took the vehicle to a certified mechanic who diagnosed that the oil filter housing was fractured and leaking. The oil filter needed to be replaced; however, the part was on back order and was not yet replaced. The manufacturer was not made aware of the failure. The approximate failure mileage was 57,000.

Lost transmission momentarily when accelerating. Engine reved, but no response.from transmission. Then transmission re-engaged with a jerk strong enough to set me back in my seat. This has happened numerous times but there is no pattern as to when it will happen. The dealership says they can't duplicate the complaint so I'm stuck with a problem that will one day leave me stranded on the side of the road. Transmission issues have plagued the 2017 -2023 Pacificas yet no action from Chrysler.

I was driving my van and the dash board turns on and off several times. It starts to light all lights while I'm driving. It was a scary situation while im driving my vans brakes while I'm in the freeway. This has happened several times. I also had my vehicle not turn on at all It stays locked and the dash boards says come error code. My vehicle jerks randomly and feels its gonna shut off. Had to tow the car to the dealer, no problem found. On another occasion my transmission was defective and it was changed. . It's has been taken to the dealer several times and I continue to have electrical issues and mechanical issues. I contacted the manufacturer and asked to do a buy back. The company refused and I explained all the issues that I have on my van and no resolution was made.

The car stalls out In midst of driving and will not accelerate, than it will with a hard jerk try to accelerate again, at first I thought it was bad gas, then I noticed it more and more which prompted me to look it up and see that it’s a recall for that specific problem that I’m having but my vent number has No recall although I’m experiencing that same issue with my vehicle

When accelerating slowly from a dead stop, the transmission will sometimes hesitate/ pause to shift and then shift with a hard bang. Most often this happens while accelerating in the 10-20 mph range but will sometimes happen while in the 20-30 mph range. It only happens if accelerating very slow. Quicker acceralation-no problems.

MY 2017 CHRYSLER PACIFICA STARTED LEAKING OIL AT 69000 MILES . I NOTIFIED CHRYSLER AND WAS TOLD TO TAKE THE VEHICLE TO A CHRYSLER DEALER AND THEY WILL CHECK IT OUT , THEY DID, AND FOUND THE ENGINE OIL COOLER LEAKING OIL.THIS IS A VERY BIG SAFETY HAZARD BECAUSE THE ENGINE CAN RUN OUT OF OIL AND SEIZE UP AN EXPRESSWAY DRIVING 65 MPH AND CAUSE DEATH OR OTHER SERIOUS INJURY. NO VEHICLE SHOULD EVERY LEAK OIL AT ONLY 69000 MILES, THIS IS A SAFETY DEFECT AND ALL 3.6 CHRYSLER ENGINE SHOULD BE RECALLED. I HAD TO PAY 969.00 TO REPAIR MY VEHICLE. PLEASE INVESTIGATE THIS PROBLEM. SINCERELY, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

The vehicle has had constant electrical issues. The car freaks out at sporadic times. This can include power cutting in and out while driving, suddenly being unable to put into gear, or unable to start the vehicle at all. Symptoms include tactometer and speedometer simultaneously going up all the way and down over and over again, engine slowing down and starting. Lights on the shifter flashing (this was replaced). A Dealer service rep saw it when I drove in, but was unable to mimic it since it happens so sporadically - they had never seen it before and eventually said, "We don't know what to do."

Foam headrest became unglued and broke. I have 2 identical car seats this happened to one in Sept and now one in Dec. based on google search seems like it’s a common issue.

A head gasket malfunction causes fumes to get into the coolant system and overheat the vehicle.

The transmissions in these vans have a serious problem. I have done research in the Pacifica forums and found many users are experiencing issues with the transmissions. My particular issues are: 1. Sometimes the vehicle jerks between lower gears especially when starting. The danger in this is when trying to go from a stop the vehicle will hesitate and then jerk extremely hard. It's startling and also dangerous when not expecting it. 2. At interstate speeds the transmission will not shift gears sometimes. This causes the van to slow down rapidly especially on hills. The dealership has looked at my particular van multiple times and they have "reprogrammed" the transmission multiple times but the problems still exist.

The contact owns a 2017 Chrysler Pacifica. The contact stated the START/STOP feature failed to work properly. The contact stated that the vehicle stalled when the brake pedal was released. The driver had to restart the vehicle. The contact disabled the START/STOP feature. Additionally, while driving at night in the rain the vehicle overheated. The contact was able to restart the vehicle. The coolant was low, and coolant was added. The vehicle was taken to an independent mechanic who informed the contact that the check engine and coolant lights were illuminated. The battery was faulty, and the START/STOP feature was inoperable. A pressure test was performed however, the mechanic was unable to locate a coolant leak. The vehicle was taken to the local dealer and diagnosed that the EGR cooler valve was cracked. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to NHTSA for assistance. The approximate failure mileage was 40,000.

The contact owns a 2017 Chrysler Pacifica. The contact stated that the touch screen failed to respond as needed. The vehicle was shifted into reverse; however, the rear-view camera failed to operate as designed. The contact stated that the radio malfunctioned, and the steering wheel heater and seat heaters failed to deactivate causing the seats to overheat and burn the occupants. The vehicle was taken to the dealer who had replaced and upgraded the center seat module; however, the failure reoccurred. The contact returned the vehicle to the dealer two more times where the radio was replaced then the touchscreen was replaced. The failure reoccurred; however, the contact had not taken the vehicle back to the dealer. The manufacturer was made aware of the failure and filed a case. The approximate failure mileage was 16,742.

Hard shift when down shifting at lower speed that causes intense jerk of vehicle.

When pulling into traffic from a stop the transmission seems to try and go into third gear then drops back into second gear. This happens randomly but the result is that the car stops for a few seconds after pulling into traffic. I have complained about this problem to the dealer from the time of purchase. They have done extensive work on the transmission. As the car has aged the problem has become progressively worse. The dealer is now telling me that Chrysler knows the transmission has a problem but it is not endangering the public. The problem is random but we have to be very careful when pulling into traffic because we never know when the car will hesitate and/or stop after pulling into traffic. The problem has occurred randomly since purchase. The date entered below is the date of the last occurance.

Very hard shift of automatic transmission at slow speed from stop at about 15 MPH. Strong jerking motion poses dangerous pause in acceleration and control of ability to steer.

Vehicle hard shifts, and occasionally loses all driver power input while driving. The loss of power last occurred during a left-hand turn across traffic, when the car suddenly stopped accelerating through the intersection with oncoming traffic and coasted through, finally regaining power after crossing the street. Vehicle was taken to dealership, and dealer verified this is a known issue. Dealer stated there is an updated software package which addresses this issue, and it is not covered under my 100k mile CPO warranty.

As I am driving the vehicle will jerk forward. It feels as if it has been rear ended but no such collision has accrued. It also does this when I am sitting at a red light, then when I begin to accelerate it acts as though it is going to stall.

Brake booster issue. Makes a hissing sound when braking and almost to the point where i will hit the car in front of me. At a stop light the brake pedal will rise and car will move forward although im pushing down.

The vehicle will hard shift after a stop at a stop sign/stop light. Once you have started going, it's like the transmission is playing catch up and not responding to the gas pedal being pushed and the rpms going up, and once it catches up, the vehicle jerks forward as the transmission catches in the gear and it feels like you're being rear ended in a pretty hard accident.

When I was driving at local road around 20 miles per hour, the engine suddenly shut down. My car was stopped in the middle of road. I had to shift the gear to park and restart the engine and go. This has been happened three times in the past two months.

Stop and start function car shut down in traffic you have to place car in park and restart also stop and start function not available .

On July 26 when starting the car the entire dash lit up and all possible dash lights began to flash, the RPMs would go up and down, speedometer would move up and down. It literally looked possessed. Turned the car off. Later that day went to start the car again (to bring it in if possible) and the car started fine. Started driving towards the dealership. At 30mph the car began to accelerate on its own. Thankfully no cars in front as I slammed the breaks and pulled over. The dash lights again went haywire. Pulled over and shut car off. Turned back on and drove the mile home (13 miles to dealership). Next day we again brought it into the dealership and the car made it. They were unable to duplicate and stated there were 100's of codes and they don't know where to begin. The dealership sent me home. Almost a month later exactly the vehicle went crazy. This time I grabbed my cell phone and recorded it. Turned the car off and had it towed to the dealership. It did not do it again. They have had it now going on over two weeks and are unable to duplicate the issue. Again, they stated there are 100s of codes and don't know where to start. The car is not safe for driving. Once the dash goes crazy all control is lost. We have an extended warranty. We love the features of the car, but with five kids we do not feel safe driving it on the highway until they look into this. I have read at least two others with similar issues, but the dealership says they only work with Chrysler Engineering and don't look at other websites. VERY FRUSTRATED.

I bought my 2017 Chrysler Pacifica in 2018, and it would randomly jump gears while accelerating or stay in a higher gear. The dealership could not duplicate the problem for months. In May 2019, it threw a check engine light code of P0732. This was then repaired at a Chrysler dealer. It started doing that same thing again in January 2021. In September 2021, it threw the same check engine light code of P0732.

We were about to turn left onto a busy highway. Pulled into traffic and vehicle stalled with 2 adults and 4 children in the car. While stuck in the middle of the high way with oncoming traffic from both sides we started honking the horn and waving traffic to stop. Husband noticed a blinking “D” light on the shifter knob and an alert on the dash that read something like “shift to park”. Due to the incline of the road we rolled backwards off the highway. We luckily were not hit by oncoming traffic but completely terrified by the situation. Had that highway been as busy as it usually is we would be dead. Shifted back to park. Was then able to drive vehicle the half mile home. Brought vehicle into dealership where after 2 weeks they were unable to to recreate issue and found nothing wrong. Stalling with no prior warning is a known recall for this vehicle but the recall was supposedly fixed on January 11th of 2018. This did not fix the stalling issue obviously. We refuse to drive vehicle again and take the chance of killing our family. After many conversations with Chrysler care we are 3 weeks out from incident and they have been of no help. This vehicle is not safe to be driven. After reading many forums there are many complaints of this recall not fixing the issue. Chrysler needs to be held accountable. I refuse to be a test dummy for this vehicle.

Getting sharp Jerks when shifting gear there is problem in transmission, i have seen lot's of people are having same issue when i google & in youtube videos, customers are facing issues & company is taking fat profits & not providing any fix. Just have to keep reseting it that can last depending on your car usage.

The vehicle is experiencing rough, late shifts when pressing the gas. The vehicle frequently lunges forward while your foot is steady on the gas pedal, feeling as if you have been hit from behind. It has 36,000 miles on it.

While traveling on a dry highway, with good tires/new tires, and decelerating from 45 mph and approaching a red light, and a moderate, but firm pressure on the brake to bring the van to a full stop, the speed decreased to 15 mph, with the tachometer stable at 800 rpm and then to 10 mph, with both hands on the wheel, left foot on the dead pedal, and right foot on the middle of the brake pedal. As the speedometer made the transition at 10 MPH, the tachometer surged to 1500 RPM and then to 3000 in under 3 seconds, which cause me to initiate an emergency action drill of stabbing the brake pedal hard three times and rotating the transmission control to the lowest gear. The transmission refused to shift lower, and the control of the vehicle turned on oa wrestling match and the tachometer surged from 1500 RPM, them 3000 RPM, then 4500 RPM, and then 6000 RPM, each time the vehicle acting like it was repeatedly being rear-ended at a speed exceeding 15 MPH. The engine could not be disengaged and aceelaretd uncontrollably to over 40 MPH, through a busy intersection, and required over 24 hard break stages over a 10 second period to actually stop the car, and the engine refused to disengage until stopped. Once the car was restarted it immediately surged forward trying to fight through the hard applied brakes. The cruise control was never on the entire time. I then stut down the engine once I was able to wretle it to a stop with the engine climbing to over 4500 RPM. I then took this vehicle to a safe area, and repeated the conditions, and again as the vehilce speed dropped below 15 MPH, and certainly below 10 MPH, the egine tachometer increased in steps of 1500 MPH, 3000, 4500, 6000 RPM, and no control could be achieved other then violently "stabbing" the brake pedal. Under controlled conditions the behavior was repeatable over 20 times. This is a life threatenign defect, and it appears to be software in origin. I have CAN data streams from the events (23) and video.