Unclassified problem on the 2012 Toyota Tundra
Only 10 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 unclassified problem gets reported
Owners of the 2012 Toyota Tundra report unclassified problem at a median of 90,000 miles. A quarter of the reports come in before 40,000 miles and a quarter after 110,000 miles, from 10 reports that carried an odometer reading.
It is the 42nd most-reported problem on this model year.
The mileage distribution
The reported range runs from 15,000 miles at the tenth percentile to 135,000 miles at the ninetieth, a spread of 123,273 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.
30% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 13,247 miles | 40,250 miles | 89,000 miles | 109,000 miles | 136,520 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.
The same failure on other years
The same failure is reported on 22 model years of this car. It shows up earliest on the 2018, at a median of 2,100 miles, and latest on the 2001 at 165,000 miles.
By volume the 2006 carries the most reports, with 118; the 2012 has 17. 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.
I was driving my 212 tundra crewmax and when I reached a traffic light--red, I pressed the brakes and the truck started to pull up and the RPM's went high. Even when I pressed the brakes real hard it was still moving forward. I prompted to put the transmission in park and turned the engine off. Restarted it and shifted into drive, the truck pulled up real fast because the RPM's were high, but in about two or three seconds went to normal. Scared and very careful I drove it home, didn't do it anymore but I contacted my dealer's customers relations manager and he got tow it away from my home for its checkup. According to them, came up with nothing wrong with it and it is safe to drive. They said that they've hooked up a computer to it and the truck's computer did not register anything wrong or malfunction whatsoever. But it did happened. It wasn't my imagination and my concern is that it may happens again and I might not be able to control it or turn it off as I did this time. I might not be that lucky again and hurt myself or someone else. Might not be at a traffic light in red. And might even cause someone's death, or mine. *tr
While using to horn the cover of the airbag split along the seam where the airbag deploys. The vehicle was brought into get scheduled service and toyota's position is that it is not a warranty issue or safety issue. I placed 3 calls to toyota customer experience center starting 10/26/2012 (case#[xxx]) with the problem and have not received a response! I am concerned that it may affect the way and if the airbag deploys. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr
Please refer to tsb 0160-11. Toyota recognized that inferior quality parts were used as part of their emissions system and wrote this tsb as a remedy. The problem I have is that they continued to use the faulty parts beyond the 2011 model year cut-off in this tsb. My truck is throwing the same engine and emissions codes associated with this tsb. It also forces the engine into a "low power mode" greatly reducing the ability to accelerate. Lastly, it turns off traction control which affects the stability of the truck. I have filed a ticket with toyota and from what I have read on the internet, I don't expect much help. The parts to repair this run over $1,000 alone. There are many owners having the same issue with the tundra, sequoia and some other models (on the 4.6l, 4.7l and 5.7l engines). The engine codes usually appear on startup (when the emissions device are supposed to kick in), but the low power mode kicks in while moving.
Also reported on the 2012 Toyota Tundra
Other engine problem
Other fuel system problem
Other powertrain problem
Other electrical problem
Other body or interior problem
Other speed control problem
How far this goes
This page is kept out of search results because 17 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 17 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 unclassified problem happen on the 2012 Toyota Tundra?
Across 10 owner reports that included an odometer reading, half were filed by 90,000 miles. A quarter were filed before 40,000 miles and a quarter after 110,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is unclassified problem on the 2012 Toyota Tundra?
17 reports have been filed with NHTSA, about 22 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