Kia engine warranty extension: two programs, two different cars

Kia runs more than one engine warranty extension, and they cover different cars for different failures. This section is the connecting rod bearing program, and it reaches three groups of vehicles across three different engines. If you have a 3.3-liter V6 Sorento, Cadenza or Sedona, the program you want is the cylinder head gasket extension further down this page.

The two Soul rows are frequently reported as a contradiction, and they are not one. The Soul was sold with both engines across overlapping model years, so Kia ran a separate campaign for each: PI2002A for the 1.6-liter and PI2002B for the 2.0-liter. The terms are identical. A 2015 Soul can sit in either, and only the engine decides which — which is precisely what decoding the VIN tells you. PI2002B was still being renotified to owners as recently as 2025.

The Sportage group is the one most often missed altogether. Kia notified owners of 2011–2013 Sportage vehicles with the 2.4-liter multi-point injection engine in April 2021, and renotified them in March 2024 because the campaign still had not been completed on their cars. If you own one, that second letter is a strong hint that the software was never installed.

The terms are stated plainly in Kia’s own campaign letter to owners. On completion of the software update, Kia will warrant any engine long block assembly repairs needed due to connecting rod bearing damage for 15 years or 150,000 miles, starting from the first date of service, whichever occurs first, for both new and used vehicle owners.

It is worth registering how far that reaches. Fifteen years from first service is longer than most people keep a car, and 150,000 miles is beyond the point where the average owner stops expecting any manufacturer involvement at all. The coverage also grew over time — an earlier version of the program extended the engine short block to 10 years or 120,000 miles before being expanded to the long block at the current terms.

A separate pair of extensions covers a completely different failure on completely different cars. Kia extended coverage for repairs related to the cylinder head gasket on 3.3-liter V6 engines from 5 years or 60,000 miles to 15 years or 180,000 miles, starting from the date the vehicle was first put into service.

The failure is described the same way in both bulletins: under certain severe operating conditions and over time the engine may develop a coolant leak from the cylinder head gasket area, and if the vehicle continues to be driven unrepaired the engine may overheat and become further damaged. The symptoms Kia names are a coolant leak, a coolant smell, or the temperature gauge sitting near the H mark.

Both bulletins limit themselves to production date ranges rather than covering every car of those model years, which is one more reason the answer for a specific vehicle comes from a dealer running the VIN rather than from a model-year table.

The head gasket extension works differently from the software campaign, and the difference matters if you are trying to be proactive. Kia states plainly that it is not a service campaign requiring a repair on all eligible vehicles, and that dealers should not perform any diagnosis or repair under the program unless the vehicle actually exhibits a coolant leak, a coolant smell, or the temperature indicator near the H mark.

So there is nothing to book preemptively here. What the extension gives you is a very long window in which a specific failure gets fixed at no cost — and a reason to take an early coolant symptom to a dealer promptly rather than topping the system up and carrying on, which is what most people do.

Kia also notes that the extension does not alter the limitations and exclusions in the underlying New Vehicle Limited Warranty, including failure of the head gasket or head bolts caused by abuse, neglect or external damage. And owners who already paid to fix this before being notified may be able to claim reimbursement by submitting receipts to Kia.

The extension is not automatic and does not attach to the vehicle by virtue of its model year. Kia frames it as following completion of the campaign — the coverage applies upon completion of the software update.

So a car that has never been to a dealer for the update is a car outside the extension. The owner has not lost anything through fault; they simply have not yet claimed something that is free, takes about an hour, and is worth an engine.

The Knock Sensor Detection System is not a repair. Kia describes it as a system that detects vibrations indicating the onset of excessive connecting rod bearing wear, designed to alert the driver at an early stage of that wear, before severe engine damage including engine failure occurs.

It is an early-warning function delivered as an engine control unit update. That distinction matters when you are weighing the car: the update does not fix a worn bearing, and it does not make a healthy engine healthier. What it does is convert a failure that used to arrive without warning into one the car tells you about while repair is still an option — and, separately, it switches on the extended coverage.

Most manufacturer goodwill extensions stop at the original purchaser, which is why used buyers learn to ignore them. This one does not. Kia’s letter is explicit that the coverage applies for both new and used vehicle owners.

For anyone shopping these cars that changes the arithmetic. A vehicle with the campaign completed carries a manufacturer commitment on its most expensive component, running to a term most buyers will never reach. That is worth establishing before you negotiate rather than discovering afterward.

Here is where the usual advice fails. Kia ran this as a Product Improvement Campaign, not as a safety recall, and NHTSA’s free VIN lookup covers safety recalls — vehicles recalled for an unreasonable risk to safety or for failing a safety standard.

A campaign outside that definition can be entirely real, still outstanding on the car, and absent from the federal tool. Running the VIN through NHTSA and getting a clean result tells you about safety recalls. It does not tell you whether this campaign was done.

1. 1Decode the VIN firstConfirm the model year and engine you are actually looking at, free, before you start asking about programs that may not apply to it.
2. 2Run the free NHTSA recall lookupWorth doing on any vehicle for open safety recalls — while understanding it may not surface a product improvement campaign.
3. 3Call a Kia dealer with the VINAsk specifically whether the Knock Sensor Detection System campaign has been completed, and whether the extended engine coverage is active.
4. 4Get the answer before you negotiateIf the update has not been done it is free to have done — but you want to know which car you are buying.

Kia’s letter carries a caution alongside the good news: owners are told to continue following the maintenance schedule in the owner’s manual, that improper maintenance during the warranty period may affect coverage, and that they should retain documents showing proper maintenance has been performed.

That is not fine print designed to defeat claims — it is the ordinary condition on any powertrain warranty. But it does mean a service history is part of the asset here. On a used purchase, a folder of oil change records is worth more on one of these cars than on an equivalent vehicle without an extended engine commitment riding on it.

Hyundai and Kia share the engine family at the center of the rod bearing story, and Hyundai ran its own extensions on the same failure mode. They are separate programs under separate codes on separate cars, and the two marques are mixed together constantly by sites summarizing them. Nothing in this section applies to a Kia.

Hyundai runs two tiers, not one. Bulletin TXXM extends coverage for engine damage from connecting rod bearing wear to 15 years or 150,000 miles from the date of original retail delivery or first use. Bulletin TXXI goes further, to a Limited Lifetime Warrantyon Theta II long block repair or replacement. Both are valid for original and subsequent owners. TXXI carries conditions Kia’s programs do not: Hyundai requires that its own KSDS software campaign has been completed andthat the car presents the specific rod bearing fault code, or an engine concern related to that wear. The cars are Hyundai’s — Sonata, Santa Fe Sport, Santa Fe and Tucson — not Kia’s.

The exclusion worth being precise about is the salvage one, because it is the sentence most often repeated without its source. It is Hyundai’s. TXXM states that commercial entities, individuals in the business of buying, selling, leasing or renting vehicles, and salvaged vehicles are ineligible for the extended warranty. That language appears in a Hyundai technical service bulletin about Hyundai cars.

Kia’s three documents say no such thing — and they do not say the opposite either. None of them mentions salvage, branded or rebuilt titles at all. What WTY035 does say is that the extension “does not alter the limitations and exclusions contained in that New Vehicle Limited Warranty,” naming abuse, neglect and external damage. So the honest answer for a Kia is that the underlying warranty terms govern, the bulletins are silent on title brands, and the only way to settle it for one car is a dealer running the VIN.

• Establish whether the software campaign has been completed, by VIN, before agreeing a price
• Treat a clean NHTSA recall result as covering safety recalls only
• Ask for the service history — maintenance records support any future claim
• Check the title for brands, which can exclude a car from these programs
• Remember the coverage runs from first service, not from when you buy it
• Have the engine inspected regardless; the extension is a backstop, not a guarantee of condition

And the honest framing for anyone reading this while shopping: an extended engine warranty is a reason to prefer one car over another, not a reason to skip the inspection. It pays for a failure. It does not prevent one, and it does not compensate you for the weeks a long block replacement takes.