Other speed control problem on the 2009 Jeep Grand Cherokee
2 crashes 1 injury 3 of the 9 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
When other speed control problem gets reported
Owners of the 2009 Jeep Grand Cherokee report other speed control problem at a median of 75,000 miles. A quarter of the reports come in before 20,000 miles and a quarter after 95,000 miles, from 8 reports that carried an odometer reading.
A part like this is normally expected to survive 78,000 miles. It is the 7th most-reported problem on this model year.
The mileage distribution
The reported range runs from 15,000 miles at the tenth percentile to 130,000 miles at the ninetieth, a spread of 114,260 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
38% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 14,250 miles | 22,091 miles | 72,500 miles | 96,500 miles | 128,510 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
Of these reports, 2 a crash and 1 an injury are mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $250–$2,000 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.
This mode is classified as critical, which means a failure can leave the car unable to stop, steer, or stay out of the way of traffic. It is weighted accordingly in the risk score.
The same failure on other years
The same failure is reported on 28 model years of this car. It shows up earliest on the 2020, at a median of 2,300 miles, and latest on the 1998 at 125,000 miles.
By volume the 2005 carries the most reports, with 58; the 2009 has 9. 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.
Vehicle suffers loss of acceleration. This can occur when merging into traffic, attempting to pass. Routinely happens after traveling on interstate at consistent speed but has happened when attempting to merge onto or off interstate. There have also been occasions when vehicle appeared to backfire discharging plume of white smoke. Diagnostics at the dealership did not show any problems but when a computer was hooked up to the vehicle, it captured unexplainable readings that astounded the mechanics. Dealership has changed two map sensors and this has not corrected the problem. *tr
I was driving on the highway and the vehicle pulled away as in driving itself. My only control was the brakes. It was scary thank god no one got hurt. Its not the first time. I've brought this to the attention of the dealer and they told me nothing is wrong. This has happened to me 4 diff times. When I put the car on park the RPM revs up to 5000 RPM I have to immediately shut the car off. This is a safety concern and needs to be looked into immediately. *tr
While attempting to park vehicle, with only brake being applied, and motor allowed to idle, vehicle accelerated. All attempts to stop vehicle by hard application of foot brake failed, and vehicle collided with a building. Subsequent investgation by insurance adjuster determined the vehicle was fast idling, possibly a tps issue. Despite many complaints to various jeep authorized servicers, none ever disclosed a problem with this issue. Since new, the vehicle transmission has always had a tendency to grab when approaching a steep incline at idling speed, with sudden acceleration if gas pedal is gently depressed. *tr
Also reported on the 2009 Jeep Grand Cherokee
Other electrical problem
Ignition switch, key fob or immobilizer failure
Other powertrain problem
Other engine problem
Other wheel or tire problem
No-start or intermittent start failure
How far this goes
Complaints are voluntary, so 9 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 other speed control problem happen on the 2009 Jeep Grand Cherokee?
Across 8 owner reports that included an odometer reading, half were filed by 75,000 miles. A quarter were filed before 20,000 miles and a quarter after 95,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is other speed control problem on the 2009 Jeep Grand Cherokee?
9 reports have been filed with NHTSA, about 0.3 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