Unclassified problem on the 2004 Toyota Tundra
4 crashes 3 injuries 1 death 8 of the 65 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.
Only 28 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 2004 Toyota Tundra report unclassified problem at a median of 140,000 miles. A quarter of the reports come in before 97,500 miles and a quarter after 177,500 miles, from 28 reports that carried an odometer reading.
It is the 55th most-reported problem on this model year.
The mileage distribution
The reported range runs from 75,000 miles at the tenth percentile to 207,500 miles at the ninetieth, a spread of 133,097 miles across the middle 80% of reports.
When the reports scatter this far, the mileage is telling you about how these cars were driven more than about the part itself.
4% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 74,003 miles | 97,500 miles | 140,000 miles | 178,500 miles | 207,100 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, 4 a crash, 3 an injury and 1 a fatality 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.
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 2004 has 65. 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.
Tl*the contact owns a 2004 toyota tundra. While driving approximately 55 MPH, the contact swerved to avoid an animal in the road. As a result, the vehicle crashed into a ditch and turned over. The air bags failed to deploy. The contact sustained an injury to his back. The police department was called to the scene and they filed a report. The vehicle was completely destroyed. The VIN was unknown. The failure and current mileages were 92,00 updated 09/15/08 *bf. Updated 09/18/08. *jb
Tl*the contact owns a 2004 toyota tundra. The contact was driving approximately 35 MPH before approaching a stop sign. There was an unintended acceleration. The brake pedal was engaged and the vehicle continued without slowing down. The ignition key was removed from the ignition and the vehicle crashed into a wall. There were two passengers in the vehicle that sustained injuries. The air bags failed to deploy with the impact involved. A police report was taken. The VIN was unavailable. The failure and current mileages were 34,000.
Tl* the contact owns a 2004 toyota tundra. The contact stated that the air bag warning lamp illuminated. The vehicle was taken to a local mechanic who diagnosed that the air bag spiral cable was defective and needed to be replaced. The manufacturer was made aware of the failure who did not offer any assistance. The vehicle was not repaired. The failure mileage was 100,000 and the current mileage was 107,000.
Also reported on the 2004 Toyota Tundra
Other body or interior problem
Control arm, ball joint or bushing failure
Rust or structural corrosion
Differential or transfer case failure
Other suspension problem
Steering rack, gear or tie rod failure
How far this goes
This page is kept out of search results because 65 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 65 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 2004 Toyota Tundra?
Across 28 owner reports that included an odometer reading, half were filed by 140,000 miles. A quarter were filed before 97,500 miles and a quarter after 177,500 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is unclassified problem on the 2004 Toyota Tundra?
65 reports have been filed with NHTSA, about 0.9 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