Ignition switch, key fob or immobilizer failure on the 2015 Jeep Grand Cherokee
When ignition switch, key fob or immobilizer failure gets reported
Owners of the 2015 Jeep Grand Cherokee report ignition switch, key fob or immobilizer failure at a median of 15,000 miles. A quarter of the reports come in before 5,000 miles and a quarter after 35,000 miles, from 10 reports that carried an odometer reading.
A part like this is normally expected to survive 85,000 miles. It is the 25th most-reported problem on this model year.
The mileage distribution
The reported range runs from 500 miles at the tenth percentile to 50,000 miles at the ninetieth, a spread of 49,000 miles across the middle 80% of reports.
A window that narrow is the signature of a part that fails on its own schedule rather than on how the car is driven — which is usually a design or supplier problem rather than wear and tear.
80% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 500 miles | 3,925 miles | 14,775 miles | 32,638 miles | 49,500 miles |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Putting it right typically runs $250–$1,500 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 17 model years of this car. It shows up earliest on the 2018, at a median of 10,000 miles, and latest on the 1998 at 140,000 miles.
By volume the 2005 carries the most reports, with 141; the 2015 has 12. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
Random "key fob has left the vehicle" message this happened three times today. All three were with the fob in my pocket as I sat in the driver's seat, with the second fob at home on my desk (miles away). First instance, my husband got out of the car and when the door closed I got an audible warning and the "key fob has left the vehicle" message with a picture of the fob shown in the evic. Before shouting to bring the key back I checked my pocket and the fob was there. The message disappeared when he returned to the vehicle, but we confirmed that he definitely did not have a key fob on him. Second instance, the same thing happened a few minutes later when we dropped my daughter off at school. As she exited the vehicle, the "key fob has left the vehicle" and chime began. We asked her to return to the vehicle although she definitely did not have a key fob, but the chime would not go off. I ended up turning off the vehicle and turning it back on and the message and chime disappeared. The third instance happened later in the morning when my husband left the car (again I was sitting in the drivers seat with the fob in my pocket). To…
Tl* the contact owns a 2015 jeep grand cherokee. While the vehicle was parked in the garage without the key in the ignition, it was discovered that the vehicle had independently started. The contact entered the garage on two occasions without the key fob in his pocket and the vehicle was not running. The doors were locked. The contact depressed the door open button on the fob, unlocked the vehicle, and powered the vehicle off. The vehicle was not taken to the dealer. The manufacturer was not made aware of the failure. The approximate failure mileage was 25,550.
Tl* the contact owns a 2015 jeep grand cherokee. While the vehicle was parked in the garage without the key in the ignition, it was discovered that the vehicle had independently started. The contact entered the garage on two occasions without the key fob in his pocket and the vehicle was not running. The doors were locked. The contact depressed the door open button on the fob, unlocked the vehicle, and powered the vehicle off. The vehicle was not taken to the dealer. The manufacturer was not made aware of the failure. The approximate failure mileage was 25,550.
Also reported on the 2015 Jeep Grand Cherokee
Other body or interior problem
Other powertrain problem
Other engine problem
Other electrical problem
Other fuel system problem
Seat belt or retractor failure
How far this goes
Complaints are voluntary, so 12 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does ignition switch, key fob or immobilizer failure happen on the 2015 Jeep Grand Cherokee?
Across 10 owner reports that included an odometer reading, half were filed by 15,000 miles. A quarter were filed before 5,000 miles and a quarter after 35,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is ignition switch, key fob or immobilizer failure on the 2015 Jeep Grand Cherokee?
12 reports have been filed with NHTSA, about 0.1 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed