Toyota service campaign 26TC01
What it saysAn electrical connection for the rear window defogger may not have been installed correctly during vehicle assembly. NHTSA’s full summary ↓
Toyota filed this with NHTSA as a service campaign dated Sep 8, 2026, received Oct 8, 2026, about the electrical system — 3 documents under this number. It names 4 model years (2024–2025). 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 communicationAn electrical connection for the rear window defogger may not have been installed correctly during vehicle assembly. Overtime, this can cause the rear window defogger to become inoperable, which could reduce visibility through the rear window when moisture or condensation is present
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26TC01 | Service bulletin | Sep 8, 2026 | 11038372 | |
| 26TC01 | Service bulletin | Sep 8, 2026 | 11038371 | |
| 26TC01 | Service campaign | Sep 8, 2026 | 11038370 |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 04005-29147 | BOX ASSY, POWER DISTRIBUTION | — |
| 82730-47580 | BOX ASSY, POWER DISTRIBUTION | 1 |
| 82673-47230 | BRACKET, JUNCTION BLOCK | 1 |
| 90980-12E65 | HOUSING, CONNECTOR | 1 |
| 82998-12380 | REPAIR WIRE TERMINAL | 1 |
| 82999-30020 | CRIMP SLEEVE (L SIZE) | 1 |
| 82999-30010 | HEAT SHRINK SLEEVE | 1 |
Read by machine from the document NHTSA serves (32 pages), read Oct 9, 2026. A part number is shown only where it matches Toyota’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 4 model years this bulletin names have filed 65 complaints with NHTSA since 2015. 18 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.
The small battery located in the back of the car has a serious problem. I have been stranded over four times now. The battery loses it charge or isn't being fully charged up. When I go to get in the car. The interior lights flash and it will not go into ready mode to allow the vehicle to be driven. I have been stranded four times.
2025 Toyota Prius · Electrical System · filed with NHTSA Aug 29, 2026 · ODI 11760656
The contact owned a 2024 Toyota Prius Prime. The contact stated that while driving 20 MPH with cruise control engaged, while depressing the brake pedal, the vehicle accelerated. The vehicle crashed into the rear bumper of the vehicle ahead. The air bags deployed and the vehicle was deemed a total loss.
2024 Toyota Prius Prime · Electrical System · filed with NHTSA Oct 8, 2026 · ODI 11769876
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 group41 other manufacturer communications filed against these Toyota models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Toyota list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| T-SB-0106-22 OBSOLETE | Service bulletin | Jan 30, 2026 | OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26. |
| T-SB-0001-26 | Service bulletin | Jan 28, 2026 | Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool… |
| T-TT-0790-25 | Service bulletin | Aug 20, 2025 | Some customers may experience echoing on the line calling the vehicle when using Bluetooth Hands Free. This is caused by the phone Hands Fre… |
| T-SB-0058-23 REV1 | Service campaign | Jun 13, 2025 | The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The… |
| T-TT-0780-25 | Service bulletin | Apr 2, 2025 | To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. T… |
| T-TT-0779-25 | Service bulletin | Apr 2, 2025 | To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. T… |
| T-SB-0106-22 REV2 | Service bulletin | Feb 11, 2025 | Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool… |
| T-SB-0013-24 REV1 | Service bulletin | Feb 10, 2025 | The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Toyota, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Toyota 26TC01 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 26TC01 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 26TC01 cover?
The manufacturer filed it against 4 model years: 2025 Toyota Prius, 2024 Toyota Prius, 2024 Toyota Prius Prime, 2025 Toyota bZ4X. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.