Kia warranty extension WTY035
Kia filed this with NHTSA as a warranty extension dated Oct 8, 2025, received Jan 6, 2024, about the engine — 6 documents under this number: WTY035_TSB_R3, WTY035_TSB_R2, WTY035_TSB_R1, WTY035_TSB and more. It names 2 model years (2016–2017). A warranty extension is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationTECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: ENGINE SUB ASSEMBLY INSPECTION/REPLACEMENT (WTY035) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY035) to diagnose a coolant leak from the cylinder head gasket area and, if necessary, replace the engine sub-assembly on 2016-2017MY Sorento (UMa) vehicles equipped with 3.3L GDI Lambda II produced from October 27, 2014 through April 13, 2017. Under certain severe operating conditions and over time, the engine in the subject vehicles may develop a coolant leak from the cylinder head gasket area. If the vehicle continues to be driven in the unrepaired condition, the engine may overheat and become further damaged. The customer may experience an engine concern including, but not limited to, a coolant leak, coolant smell, and/or engine temperature indicator near the “H� mark on the instrument cluster. The warranty coverage for related repairs will be extended from 5 years / 60,000 miles to 15 years / 180,000 miles, whichever comes first, starting from the date the vehicle was first put into service.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| WTY035_TSB_R3 | Warranty extension | Oct 8, 2025 | 11024184 | not yet checked |
| WTY035_TSB_R2 | Service bulletin | Nov 5, 2024 | 11010124 | not yet checked |
| WTY035_TSB_R1 | Service bulletin | Aug 15, 2024 | 11006551 | not yet checked |
| WTY035_TSB | Warranty extension | Jun 13, 2024 | 11001605 | not yet checked |
| WTY035_OWNR | Service bulletin | Dec 15, 2023 | 10248082 | not yet checked |
| WTY035_QA | Service bulletin | Dec 13, 2023 | 10248083 | not yet checked |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kia WTY035 a recall?
No. A warranty extension is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the WTY035 repair free?
A warranty extension is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does WTY035 cover?
The manufacturer filed it against 2 model years: 2017 Kia Sorento, 2016 Kia Sorento. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.