Overheating on the 2003 Ford Explorer
When overheating gets reported
Owners of the 2003 Ford Explorer report overheating at a median of 70,000 miles. A quarter of the reports come in before 70,000 miles and a quarter after 75,000 miles, from 8 reports that carried an odometer reading.
A part like this is normally expected to survive 102,000 miles. It is the 24th most-reported problem on this model year.
The mileage distribution
The reported range runs from 70,000 miles at the tenth percentile to 85,000 miles at the ninetieth, a spread of 11,648 miles across the middle 80% of reports.
Reports bunched into a band this tight usually mean the component has a life of its own: it goes at roughly the same mileage regardless of who owns it.
0% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 72,450 miles | 72,450 miles | 72,450 miles | 73,444 miles | 84,098 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 $400–$3,500 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.
The same failure on other years
The same failure is reported on 16 model years of this car. It shows up earliest on the 2020, at a median of 10,000 miles, and latest on the 2019 at 145,000 miles.
By volume the 2016 carries the most reports, with 21; the 2003 has 12. 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.
Took my SUV into mr. Tire to replace all 4 tires. Left mr. Tire & my o/d light started to flash @ 35 MPH. Took SUV back to mr. Tire to have them look at it. I wasnt sure if they might have cause it or not. They did a diagnostic on it & found a code p0741 tcc. They told me it could be just a selenoid or the converter. Either way, its not locking up to do a 1:1 conversion for overdrive to save on gas & prevent overheating of the transmision. They told me to go immediately to a ford dealership. I went to purvis ford service department & they did their own diagnosis. Purvis ford found that the converter is bad & coming apart. They also said it was overheating & this type of transmission for my vehical for that year was a bad transmission. Also they've had customers w/ this exact problem w/ as little as 100 miles & some w/ as much as 100,000 miles. For a 120k mile "maintenance free" transmission (w/ exception of changing out the transmission fluid) this sure seems to be an expensive transmission. What is more interesting is that ford wont replace the transmission w/ the original type of transmission. Instead they wanted to put a…
I keep reading about 2 complaints that people need to know about and ford should take action on; the first being the back tail gate... Ford do the right thing. The second has to do with the transmission, overdrive light, the parking brake and the cruise control. I use the cruise control when driving long distances and while on a few trips the overdrive light would come on for no reason, at least I thought, I then found out that I had an ABS problem and wheel bearings problems. All happening at the same time? As if that wasn't enough my transmission was dripping fluid on my new driveway! This was while I only had only 70,000 miles, it wasn't right, I checked out the brakes, they had been replaced before however when I pull off the rear drum / disk to check the parking brake that's when I found the problem. I never use my parking brake, it rotted and delaminated and was dragging hence the od light, the overheating of the transmission which blew out the seal, the excessive brake dust which was partially the cause of ABS sensor malfunctioning. The last part impacts the bearings, when the ABS sensor malfunctions it can apply the brakes…
I keep reading about 2 complaints that people need to know about and ford should take action on; the first being the back tail gate... Ford do the right thing. The second has to do with the transmission, overdrive light, the parking brake and the cruise control. I use the cruise control when driving long distances and while on a few trips the overdrive light would come on for no reason, at least I thought, I then found out that I had an ABS problem and wheel bearings problems. All happening at the same time? As if that wasn't enough my transmission was dripping fluid on my new driveway! This was while I only had only 70,000 miles, it wasn't right, I checked out the brakes, they had been replaced before however when I pull off the rear drum / disk to check the parking brake that's when I found the problem. I never use my parking brake, it rotted and delaminated and was dragging hence the od light, the overheating of the transmission which blew out the seal, the excessive brake dust which was partially the cause of ABS sensor malfunctioning. The last part impacts the bearings, when the ABS sensor malfunctions it can apply the brakes…
Also reported on the 2003 Ford Explorer
Liftgate, tailgate or trunk failure
Other powertrain problem
Other body or interior problem
Differential or transfer case failure
Other engine problem
Complete transmission failure
How far this goes
Complaints are voluntary, so 12 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 overheating happen on the 2003 Ford Explorer?
Across 8 owner reports that included an odometer reading, half were filed by 70,000 miles. A quarter were filed before 70,000 miles and a quarter after 75,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is overheating on the 2003 Ford Explorer?
12 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