Control module (ECM/PCM/BCM) failure on the 2012 Hyundai Santa FE
Only 7 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When control module (ecm/pcm/bcm) failure gets reported
There are 7 reports of control module (ECM/PCM/BCM) failure on the 2012 Hyundai Santa FE, 7 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 92,000 miles. It is the 16th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 14,095 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 $700–$3,000 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.
The same failure on other years
The same failure is reported on 15 model years of this car. It shows up earliest on the 2023, at a median of 1,100 miles, and latest on the 2013 at 110,000 miles.
By volume the 2007 carries the most reports, with 26; the 2012 has 7. 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.
While driving my 2012 hyundai santa fe (mileage approx. 13366) on the highway in fairly heavy traffic at around 70 MPH and applying pressure to the accelerator, suddenly the vehicle failed to accelerate. I heard a little "blip" noise and felt a very slight jerk, kind of like a sudden gear change or something like that, then the car suddenly started decelerating. I barely missed getting rear-ended by another vehicle and managed to coast across two lanes of traffic to the shoulder of the road without getting hit. I stopped the car and turned it off and called the hyundai dealership and asked them what I should do. I told them the engine malfunction light was on. They indicated that they had never heard of a vehicle doing this before. They said if the malfunction light wasn't blinking, the car was safe to drive and to bring it in at my earliest convenience. On the way home, the deceleration issue happened approximately 3 or 4 more times.this is an incredibly dangerous issue with the vehicle. Took it to a local dealership and the paperwork said they found issue via tsb. They did an ECM upgrade. Vehicle worked just fine for a month and…
Tl* the contact owns a 2012 hyundai santa fe. The contact stated that the vehicle stalled without warning while sitting at a traffic stop. The failure was experienced several times. The vehicle was taken to the dealer to have a diagnostic performed but the dealer was unable to generate a failure code. The dealer also test drove the vehicle but was unable to duplicate the failure. The dealer reset the electronic control module as a precaution. The failure was not corrected however, and the vehicle continued to stall when stopped. The failure mileage was 2,766 and the approximate failure mileage was 3,000.
Vehicle picked up after inspection at dealer and driven approx. 1 mile when vehicle experienced sudden loss of power. Took back to dealer, miller hyundai, and they advised nothing wrong. Then on 11/11/13 same thing occurred. Miller hyundai advised they completed an ECM upgrade. Left dealer lot and drove approx. 1/2 mile and same thing occurred. Miller hyundai then replace the throttle body on 11/14/13. On 12/19/13 the same thing occurred, sudden lost of power. This is the 4th time in 8 months that this has occurred. *tr
Also reported on the 2012 Hyundai Santa FE
Other engine problem
Stalling while driving
Other speed control problem
Other electrical problem
Other powertrain problem
Other brake problem
How far this goes
This page is kept out of search results because 7 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 7 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 control module (ecm/pcm/bcm) failure happen on the 2012 Hyundai Santa FE?
Across 7 owner reports that included an odometer reading, half were filed by 15,000 miles. A quarter were filed before — and a quarter after —. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is control module (ecm/pcm/bcm) failure on the 2012 Hyundai Santa FE?
7 reports have been filed with NHTSA, about 0.4 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