Timing chain, belt or tensioner failure on the 2004 Hyundai Santa FE
When timing chain, belt or tensioner failure gets reported
Owners of the 2004 Hyundai Santa FE report timing chain, belt or tensioner failure at a median of 70,000 miles. A quarter of the reports come in before 60,000 miles and a quarter after 100,000 miles, from 9 reports that carried an odometer reading.
A part like this is normally expected to survive 120,000 miles. It is the 17th most-reported problem on this model year.
The mileage distribution
The reported range runs from 40,000 miles at the tenth percentile to 100,000 miles at the ninetieth, a spread of 62,000 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.
0% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 40,000 miles | 60,000 miles | 67,700 miles | 102,000 miles | 102,000 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
Putting it right typically runs $1,200–$4,500 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 8 model years of this car. It shows up earliest on the 2004, at a median of 70,000 miles, and latest on the 2002 at 230,000 miles.
By volume the 2004 is the worst of them, which makes this a problem of this specific year rather than of the model as a whole.
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.
Was driving on the freeway doing freeway speeds at 5:30 am going to work when my truck just shut down. Check engine light came on, I lost all power coasted about 300 feet, pulled off on left and engine died and would not restart. Come to find out, timing belt went bad, also had to replace the crank position sensor. I've got less than 75000 miles on this truck and am very upset that this is not covered on the warranty and that the parts they use to put these trucks together are so cheap! *tr
Tl*the contact owns a 2004 hyundai santa fe. The contact heard a noise similar to liquid touching a hot surface. An independent mechanic confirmed that the air conditioner was leaking onto the pipes, the rack and pinion, and the fuel tank cover, which has also caused them to rust. The contact has an extended five year warranty; however, the dealer stated that they would only make repairs when the steering fails completely, which could result in a crash. She informed the dealer that a mechanic changed the fluids and stated that the crankshaft could have seized due to the rust and caused a loss in steering control. The mechanic performed regular maintenance checks per the mileage requirements. The transmission fluid, serpentine belt, timing belt, air conditioner belt, and power steering fluid were replaced in april of 2009. In march of 2009, the vehicle underwent frequent oil changes and tire replacements at the dealer. At that time, she was never informed of any rust being present. The independent mechanic confirmed that the rust occurred over time. The invoices for all repairs and maintenance work is available. The contact asked…
Tl*the contact owns a 2004 hyundai santa fe. The contact heard a noise similar to liquid touching a hot surface. An independent mechanic confirmed that the air conditioner was leaking onto the pipes, the rack and pinion, and the fuel tank cover, which has also caused them to rust. The contact has an extended five year warranty; however, the dealer stated that they would only make repairs when the steering fails completely, which could result in a crash. She informed the dealer that a mechanic changed the fluids and stated that the crankshaft could have seized due to the rust and caused a loss in steering control. The mechanic performed regular maintenance checks per the mileage requirements. The transmission fluid, serpentine belt, timing belt, air conditioner belt, and power steering fluid were replaced in april of 2009. In march of 2009, the vehicle underwent frequent oil changes and tire replacements at the dealer. At that time, she was never informed of any rust being present. The independent mechanic confirmed that the rust occurred over time. The invoices for all repairs and maintenance work is available. The contact asked…
Also reported on the 2004 Hyundai Santa FE
Strut, shock or spring failure
Other speed control problem
Other suspension problem
ABS module or sensor failure
Other engine problem
Airbag warning light or occupant sensor fault
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 timing chain, belt or tensioner failure happen on the 2004 Hyundai Santa FE?
Across 9 owner reports that included an odometer reading, half were filed by 70,000 miles. A quarter were filed before 60,000 miles and a quarter after 100,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is timing chain, belt or tensioner failure on the 2004 Hyundai Santa FE?
9 reports have been filed with NHTSA, about 0.1 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