TSB Z07 — Hyundai Warranty extension
Z07 is a warranty extension on file with NHTSA for the Hyundai Kona, 2021–2023 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Certain 2021-2023 model year Kona, 2021-2023 model year Kona Electric, and 2022-2023 model year Kona N vehicles may experience an inoperable horn that may be caused by foreign substances causing internal parts to oxidize. At Hyundai, we are committed to providing vehicles of…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. Z07 is filed as a warranty extension, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years Z07 names
| Vehicle | Model years |
|---|---|
| Hyundai Kona | 2021, 2022, 2023 |
Every document filed under Z07
| Document ID | Filed | Type |
|---|---|---|
| Z07 OL | May 16, 2026 | Warranty extension |
Questions buyers ask
What is TSB Z07?
Z07 is a warranty extension filed with NHTSA by Hyundai, covering the Hyundai Kona across the 2021–2023 model years. NHTSA's summary reads: Certain 2021-2023 model year Kona, 2021-2023 model year Kona Electric, and 2022-2023 model year Kona N vehicles may experience an inoperable horn that may be caused by foreign substances causing internal parts to oxidize. At Hyundai, we are committed to providing vehicles of…
Which vehicles does Z07 cover?
NHTSA's file names Hyundai Kona (2021–2023). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB Z07 a recall, and is the repair free?
Z07 is filed as a warranty extension, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of Z07?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under Z07, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under Z07. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.