Lane keep or steering assist fault on the 2014 Acura MDX
3 crashes 3 injuries 6 of the 11 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 lane keep or steering assist fault gets reported
Owners of the 2014 Acura MDX report lane keep or steering assist fault at a median of 5,000 miles. A quarter of the reports come in before 5,000 miles and a quarter after 15,000 miles, from 8 reports that carried an odometer reading.
A part like this is normally expected to survive 38,000 miles. It is the 8th most-reported problem on this model year.
The mileage distribution
The reported range runs from 100 miles at the tenth percentile to 15,000 miles at the ninetieth, a spread of 14,950 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.
100% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 50 miles | 3,613 miles | 4,800 miles | 15,000 miles | 15,000 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, 3 a crash and 3 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 $200–$1,600 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 4 model years of this car. It shows up earliest on the 2020, at a median of 1,400 miles, and latest on the 2016 at 45,000 miles.
By volume the 2017 carries the most reports, with 25; the 2014 has 11. 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.
My brand new mdx has had issues with multiple warning lights appearing on the vehicle when starting the engine. This includes check engine warning, lane departure warning failure, power steering issue and possibly additional warnings. The vehicle did this the first time when I took delivery of the vehicle and at that time, was resolved by fixing a loose plug. Then it did it again when I was supposed to pick up my vehicle for a couple minor trim repairs saturday, december 7, 2014. The vehicle is still with service and they have yet to figure out what is causing the warning light issue. I was advised that they are in touch with acura's tech line on this and they hope it will be resolved soon. Additionally, I completed further research on this and noted that other owners are experiencing similar problems with warning lights appearing on their 2014 mdx vehicles. Here is an online reference that I found where owners have posted comments on this: http://www.mdxers.org/forums/94-new-2014-acura-mdx/63666-2014-mdx-issues.html. *tr
My brand new mdx has had issues with multiple warning lights appearing on the vehicle when starting the engine. This includes check engine warning, lane departure warning failure, power steering issue and possibly additional warnings. The vehicle did this the first time when I took delivery of the vehicle and at that time, was resolved by fixing a loose plug. Then it did it again when I was supposed to pick up my vehicle for a couple minor trim repairs saturday, december 7, 2014. The vehicle is still with service and they have yet to figure out what is causing the warning light issue. I was advised that they are in touch with acura's tech line on this and they hope it will be resolved soon. Additionally, I completed further research on this and noted that other owners are experiencing similar problems with warning lights appearing on their 2014 mdx vehicles. Here is an online reference that I found where owners have posted comments on this: http://www.mdxers.org/forums/94-new-2014-acura-mdx/63666-2014-mdx-issues.html. *tr
The car has periodically shown an alert indicating an imminent activation of the automatic braking safety system when nothing has been in front of the car. Today, it did it this morning, and then later in the morning, while driving 30 MPH, the car cut off, making it inoperable and it stopped in a travel lane of a busy road. We were able to re-start it long enough to navigate off the road to a safe location, and it promptly cut off again. After that, it wouldn't run for more than 30 seconds. Every warning imaginable (power steering problem, lane keep assist problem, emission system problem, vehicle stability assist problem, hill start assist problem) was displaying on the information panel in sequential order. We had the vehicle towed to an acura dealership for inspection/repair. *tr
Also reported on the 2014 Acura MDX
Other steering problem
Other engine problem
No-start or intermittent start failure
Other powertrain problem
Other speed control problem
Other brake problem
How far this goes
Complaints are voluntary, so 11 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 lane keep or steering assist fault happen on the 2014 Acura MDX?
Across 8 owner reports that included an odometer reading, half were filed by 5,000 miles. A quarter were filed before 5,000 miles and a quarter after 15,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is lane keep or steering assist fault on the 2014 Acura MDX?
11 reports have been filed with NHTSA, about 0.2 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