2015 Jeep Grand Cherokee: false forward collision warnings

Filed Jul 23, 2023 · Driver assistance, Engine · VA

Valve lifter failure at 93,000 miles. $2,700 repair. Is apparently a very common problem with the 3.6l Pentastar engine. Adaptive Cruise Control and Forward Collision warning system front sensor failed at 56,000 miles, failed again at 76,000 miles and failed a third time at 95,000 miles. First two failures were replaced under warranty, third failure happened 1 week after warranty expiration from second replacement. Cost is too expensive to repair ($3,000 for new sensor) and requires that safety feature be turned off as sensor will perceive increases in road elevation (hills) as another vehicle and apply the brakes

Filed Apr 21, 2021 · Driver assistance, Electrical · 57,700 miles · SC

Forward facing camera behind rearview mirror developed an internal fault, which triggered vehicle's communication bus to not function at all. Vehicle would not start and could not be jumpstarted. No interior lights or accessories functioned. Vehicle had to be towed and after diagnoses, the dealer disabled the forward facing camera to make my vehicle operable again, but without functionality of auto high beams and forward collision warning and forward collision active braking features. The forward facing camera impacts auto high beams, forward collision warning, and forward collision active braking functions, at minimum. Have not been able to obtain a replacement part due to either backorder or the dealer not sufficiently searching supply chain despite repeated inquiries.

Filed Aug 29, 2018 · Acceleration, Driver assistance · 38,000 miles · MI

Vehicle's forward collision warning (fcw) system activated a brake! Alert with no hazard present. Driver information center keeps displaying message indicating acc (active cruise control)/fcw system not available off & on. Vehicle was in motion at the time of the false alert.

Filed Apr 13, 2018 · Transmission · GA

The transmission frequently shifts into neutral or park, while the vehicle is in motion, without driver input. The transmission frequently will not go into reverse, without multiple attempts the transmission frequently will not go into park without multiple attempts the forward collision warning frequently activates for no reason and stops the car the vehicle has been in for repairs on multiple occasions, yet still exhibits significant safety issues. *tt

Filed Jan 4, 2017 · Driver assistance, Electrical · 600 miles · TX

Tl* the contact owns a 2015 jeep grand cherokee. The contact observed that the forward collision warning sensor failed without warning. The vehicle was taken to the dealer on two occasions. The first time it was diagnosed that the main sensor failed and needed to be replaced. The sensor was repaired, but the failure recurred. After the second failure, it was diagnosed that the radio failed and needed to be repaired due to it being the brain of the system. The radio was replaced, but the failure recurred. The manufacturer was made aware of the failure. The failure mileage was approximately 600.

Filed Oct 19, 2016 · Brakes, Driver assistance · 6,493 miles · AR

Forward collision warning system with brake mitigation continues to engage intermittently on its own. This is not to be taken lightly. The forward collision warning with brake mitigation engages intermittently, out of the blue, when there is no need. Meaning; I'll be driving along . . . No cars or objects in front of me, and all of a sudden the system slams on the brakes, jerks very abruptly, audible bells go off and the screen illuminates brake brake brake! There have been 3 instances in which my family and I have nearly been rear-ended due to this erratic behavior that the vehicle is demonstrating. I've been in a comparably equipped loaner car for the past five weeks and it has not demonstrated this type of inconsistent, erratic behavior. This vehicle is unsafe to drive, be in or around. The jeep was purchased on july 9, 2016. I have taken the vehicle into the service department 4 times since july 21, 2016. After examination of damage, electric tech review and 2 test drives (32 miles and 100 miles) the response I get is, "the system is working as designed." the vehicle has been in service 51 of the 103 days of ownership, 49.5%. The selling/servicing dealer and manufacturer has been extremely negligent in providing transparency to any similar issues to mine. Quite frankly, they haven't communicated much of anything to me. The last time the service advisor reached out to me, via text, was on september 23, 2016. My customer experience has been awful. I do not feel safe in an fca vehicle, nor do I respect any of their corporate or dealer network associates. This is the worst consumer experience of my life. Unbelievable that my safety is not a concern to fca or the selling/servicing dealer. If it were, I would have been provided a full refunded and free to go elsewhere make a purchase with a manufacturer that I trust and appreciates me, the customer.

Filed May 19, 2016 · Brakes, Engine · 35,000 miles · GA

Vehicle randomly brakes unintentionally for 5 to 10 seconds - engine and steering fail all at the same time. A loud collision warning along with red alert braking indicators. I informed a local dealership several months after purchase (summer 2015). They reported no specific codes or recalls. The issue has occurred multiple times. In all occurrences the vehicle was in motion including highway and city streets. For incidents I directly recall they occurred while driving in a straight line (mostly).

Filed Feb 9, 2016 · Acceleration, Brakes · 1,000 miles · CA · crash · 1 injury

Tl* the contact owns a 2015 jeep grand cherokee. After switching to the park position and exiting with the engine running, the vehicle suddenly drove forward and struck a second vehicle. The contact sustained an injured right arm. Medical attention was not required. The vehicle was taken to the dealer who was unable to duplicate the failure. Also, while driving at various speeds, the collision avoidance system randomly activated and caused the braking system to abruptly stop the vehicle. The vehicle was taken to the dealer who was unable to duplicate the failure. The manufacturer was not notified of the failures. The VIN was not available. The failure mileage was 1,000.

Filed Feb 2, 2016 · SC

Forward collision warning (fcw) with mitigation. 2015 jeep grand cherokee is equipped fcw system. In service date of 10/21/15 with current milage just of 5,000. Since delivery the fcw system has never flashed a brake warning or attempted to to stop vehicle in what would be considered a panic stop situation. Have adjusted to far or near and system does nothing. Took vehicle to jeep dealer on 1/11/16 for diagnosis and repair. Dealer ran computer diagnostics . Dealer diagnosed no problem and told me to call jeep because they could not help me. I opened a case with jeep as told. Jeep has taken the stance since the dealer found no computer issues they are correct and therefore the system must be operating properly. At wits end at this point. In talking to other jeep owners and looking at jeeps own promotional videos this system should be giving constant warnings. Not one warning in 5000 miles. I am concerned that the system designed to help mitigate damage and injury will not work in the event of an accident. The system is designed to not to stop accidents or to allow driver to be careless, it is supposed to back up the driver. I feel that I am at risk for personal injury if system fails.

Filed Jun 9, 2015 · Acceleration, Brakes · VA

I own a 2015 jeep grand cherokee overland. I was informed of the federal safety agency research into the 2014 jeep grand cherokee and the problems individuals were having with the collision warning system and the automatic breaking. I have experienced the same problem two times. There was no vehicle or obstacle close to me and the collision avoidance system initiated the autmoatic breaking system while driving down an interstate highway. It did not cause an accident, thankfully. After the second incident, I disabled the forward collision warning system due to my fear that it would happen again and cause an accident. I was alerted to your investigation into the 2014 model but wanted to bring it to your attention regarding my 2015 model. Reference: the office of defects investigation (odi) has received nine complaints alleging inappropriate activations of the autonomous braking system in model year (my) 2014 jeep grand cherokee vehicles. All nine reports alleged unexpected braking incidents preceded by collision imminent brake warnings and resulting in sudden reduction in vehicle speed in traffic. Two complaints reported autonomous braking incidents with no objects on the road resulting in rapid increase in brake force and anti-lock braking system (ABS) activations. The complaints alleged experiencing multiple events at different locations and road conditions. A preliminary evaluation has been opened to assess the frequency, scope and consequences of the alleged defect. The following voq numbers are associated with the issues discussed in this resume: 10543837, 10713629, 10690650, 10663320, 10630362, 10596913, 10533622, 10533524, 10651269.

Filed Jun 9, 2015 · Acceleration, Electrical · 16,680 miles · NJ

Started the vehicle and noticed that parksense and forward collision warning were not working and every few minutes, the instrument panel, would beep and often display an error message. The messages it displayed were, "service shifter" (displayed most often), "park sense off" (it would automatically turn on and off) and "acc/fcw not working service required" (displayed a few times). Also, the screen (instrument panel) would flicker a few times and beep.the forward collision warning sensor did not work, regular cruise control did not work, adaptive cruise control did not work and parking sensors did not work. I brought it to the dealership and it appears that the acc ball (radar/camera/the thing that looks like the eye ball on the front bumper) had corrosion and all wires were shot. They ordered a new piece with harness and will replace it. However, it is my concern that this is a major electrical issue. The water can easily get into the harness (rain/snow/car wash). It should be still under warranty but what is the solution after the warranty is over? It looks like it needs to be replaced every 16,000 miles (approx.)

Filed May 6, 2015 · AZ

Letter from senator flake on behalf of constituent re unsafe 2015 jeep grand cherokee ( please respond via fax: 520‑797‑3232 or email: [email protected]). *smd the consumer stated the forward collision alert warning never activate under any circumstance when set to the far setting which the manual said to only use. In 3800, it alerted once and that was a false alert when a another vehicle made a right turn in front of him, but not in the consumers path. The dealer claimed nothing was wrong with the vehicle.