Genesis service campaign T73G
What it saysCertain G80 (RG3) vehicles may exhibit a Data Communication Unit (DCU) software error due to the internal timer initialization logic not being implemented. NHTSA’s full summary ↓
Genesis filed this with NHTSA as a service campaign dated Jan 30, 2026, received Sep 3, 2025, about the electrical system — 2 documents under this number: 26-01-012G TSB, 25-01-057G TSB. It names 2 model years (2025–2026). A service campaign 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.
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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 G80 (RG3) vehicles may exhibit a Data Communication Unit (DCU) software error due to the internal timer initialization logic not being implemented. The DCU module may shut down telematics services after one year. This bulletin provides instructions to perform a software update for the DCU module.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-01-012G TSB | Service campaign | Jan 30, 2026 | 11028322 | PDF, 737 KB |
| 25-01-057G TSB | Service campaign | Aug 28, 2025 | 11022376 | PDF, 545 KB |
What the document itself lists
The manufacturer titles it “DCU SOFTWARE UPDATE”.
Part the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 96510-T1AC0 | — | — |
Read by machine from the document NHTSA serves (8 pages), read Sep 30, 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.
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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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 12 complaints with NHTSA since 2015. 3 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
2026 Genesis G70 2.5T RWD. The navigation system is completely gone. There is absolutely no way to get the maps or even the navigation settings menu up. On every startup, you can see a part of the screen which shows it tries to load navigation, but fails every time. There are a few critical safety issues with this.
2026 Genesis G80 · Electrical System · filed with NHTSA Sep 4, 2026 · ODI 11762164
The entire instrument panel/cluster went out while driving. It did come back on after going totally black. We had no ability to see speed, fuel, or any cameras. This happened yesterday, May 13, 2025. We are trying to get an appointment at the dealership to address it.
2025 Genesis G80 · Electrical System · filed with NHTSA May 14, 2025 · ODI 11660904
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group23 other manufacturer communications filed against the Genesis G80 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 |
|---|---|---|---|
| L22G | Warranty extension | Oct 28, 2026 | Certain GV80 (JX1) and G80 (RG3) vehicles equipped with a ccIC 27 head unit may not display the navigation map on the instrument cluster due… |
| 26-GI-003G | Service bulletin | Oct 26, 2026 | This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 2nd Navigation Map and So… |
| 26-EV-008G | Service bulletin | Oct 21, 2026 | Some G80 Electrified (RG3 EV), GV60 (JW1 EV), and GV70 Electrified (JK1A EV) vehicles may exhibit a vibration noise coming from the battery… |
| L05G | Service campaign | Jun 17, 2026 | Certain G80 (RG3) and GV80 (JX1) vehicles may exhibit battery drain due to the Central Control Panel (CCP) not entering sleep mode. This occ… |
| 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-025G | Service bulletin | Dec 24, 2025 | Certain vehicles equipped with Premium Gen6 Navigation head units may exhibit issues with Genesis Connected Services, navigation, voice reco… |
| 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… |
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 T73G a recall?
No. A service campaign 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 T73G repair free?
A service campaign 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 T73G cover?
The manufacturer filed it against 2 model years: 2026 Genesis G80, 2025 Genesis G80. 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: 2025 – 2026 G80 (RG3): built 3 Jun 2024 – 24 Jul 2025 — the build date is on the certification label in the driver’s door jamb.