Genesis bulletin L14G
What it saysCertain GV60 (JW1 EV) vehicles may display a false warning light with Diagnostic Trouble Codes (DTC) U151A8C and/or U151B8C when vehicle is placed into “Ready” mode. NHTSA’s full summary ↓
Genesis filed this with NHTSA as a service bulletin dated Oct 2, 2026, received Oct 9, 2026, about the electrical system — 1 document under this number: 26-01-078G TSB. It names 1 model year (2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
Certain GV60 (JW1 EV) vehicles may display a false warning light with Diagnostic Trouble Codes (DTC) U151A8C and/or U151B8C when vehicle is placed into “Ready” mode. This bulletin provides the procedure for updating the Vehicle Platform Controller (VPC) software to address this condition.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-01-078G TSB | Service bulletin | Oct 2, 2026 | 11038419 | PDF, 616 KB |
What the document itself lists
The manufacturer titles it “VPC SOFTWARE UPDATE”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 39001-CUNA0 | — | — | |
| 39001-CUNB0 | — | — | |
| 39001-CUNP0 | — | — |
Read by machine from the document NHTSA serves (6 pages), read Oct 10, 2026. A part number is shown only where it matches Genesis’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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.
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More bulletins about the electrical system
Source: same model, same component group20 other manufacturer communications filed against the Genesis GV60 under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Genesis list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 922G | Service campaign | Oct 10, 2026 | Certain GV60 (JW1 EV) and G90 (RS4) vehicles may exhibit an inability to perform Over the Air (OTA) software updates due to an internal logi… |
| L10G | Warranty extension | Sep 25, 2026 | Certain GV60 (JW1 EV) vehicles may display a warning message and store DTC C137496 due to an internal software logic error affecting the fro… |
| 26-GI-002G | Service bulletin | May 27, 2026 | This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and So… |
| 913G | Service campaign | Apr 10, 2026 | Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services (CCS) functions. This may be… |
| 25-BE-020G | Service bulletin | Sep 30, 2025 | This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may var… |
| 25-BE-002G | Service bulletin | May 16, 2025 | This bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and Software Update. The changes may var… |
| 25-GI-009G | Service bulletin | Apr 29, 2025 | Certain Genesis vehicles may experience an inoperable horn from moisture or carbonization at the contact point. This bulletin provides a gui… |
| 25-BE-003G | Service bulletin | Feb 22, 2025 | Genesis Motor America has noted that several vehicles were impacted by a telecommunications outage that occurred on Sunday, February 9th , r… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Genesis, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Genesis L14G a recall?
No. A service bulletin 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 L14G repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Hyundai warranty extension on file lists the ones Hyundai has filed.
Which vehicles does L14G cover?
The manufacturer filed it against 1 model year: 2026 Genesis GV60. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: 2026 GV60 (JW1 EV): built 9 Jul 2025 – 10 Apr 2026 — the build date is on the certification label in the driver’s door jamb.