Toyota service campaign 26TC03
What it saysIn wet conditions, water contacting the radiator in the subject vehicles after idling for an extended period can create steam that can cause an incorrect engine sensor reading. NHTSA’s full summary ↓
Toyota filed this with NHTSA as a service campaign dated Aug 17, 2026, received Aug 12, 2026, about the engine — 5 documents under this number. It names 4 model years (2022–2025). 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 communicationIn wet conditions, water contacting the radiator in the subject vehicles after idling for an extended period can create steam that can cause an incorrect engine sensor reading. This can lead to a warning light, a rough-running engine, or a potential engine stall while idling or operating at low speeds.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26TC03 | Service campaign | Aug 17, 2026 | 11037196 | |
| 26TC03 | Service campaign | Aug 17, 2026 | 11037195 | |
| 26TC03 | Service bulletin | Jul 16, 2026 | 11036128 | |
| 26TC03 | Service bulletin | Jul 9, 2026 | 11036123 | |
| 26TC03 | Service campaign | Jul 9, 2026 | 11036122 |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 04006-0210R | GUIDE, RADIATOR AIR, NO.2 | 1 |
Read by machine from the document NHTSA serves (8 pages), read Sep 30, 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 615 complaints with NHTSA since 2015. 110 of them name Engine — 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.
I purchased the car last July. Up to December, the car performed fine. Starting in December when I used the car heater repeatedly due to subzero temperatures, I noticed a burning smell coming from the vents. I was afraid that the engine or car would catch fire. I called the Tansky Toyota dealership and was told to bring the car in.
2022 Toyota RAV4 · Engine · filed with NHTSA Apr 22, 2023 · ODI 11518482
The contact owns a 2023 Toyota Rav4 Hybrid. The contact stated while driving 15-20 MPH, the vehicle unexpectedly stopped. There were no warning lights illuminated. The contact attempted to restart the vehicle several times. After the failure, the engine and brake warning lights illuminated.
2023 Toyota RAV4 · Engine · filed with NHTSA Nov 22, 2024 · ODI 11626769
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 engine
Source: same model, same component group40 other manufacturer communications filed against the Toyota RAV4 under the same component group (engine), newest first. The eight newest are listed; the rest are on the Toyota list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| T-SB-0110-20 OBSOLETE | Service bulletin | Aug 20, 2026 | OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T-SB-0051-26. |
| T-SB-0051-26 | Service bulletin | Aug 20, 2026 | This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV) Ni-MH and Li-ion batteries. |
| 24TE04 | Warranty extension | Aug 11, 2026 | This Customer Support Program provides coverage as it applies to Flow Shut-off Valve Coolant Leak on Certain 2019-2021 Avalon & Avalon HV, 2… |
| T-TT-0806-26 | Service bulletin | Jul 22, 2026 | State of Health (SOH): An estimate of battery health that is updated as the vehicle learns from operating and charging conditions over time.… |
| T-TT-0801-26 | Service bulletin | Apr 16, 2026 | Some Customers for the listed vehicles may have complaint of the following: unable to charge the vehicle using the supplied level 1 or 2 cha… |
| T-SB-0023-26 | Service bulletin | Apr 1, 2026 | Some customers may experience a rough running engine with a MIL ON P140018 DTC. Upon further inspection, a loose C90/C27 connector pin at th… |
| T-SB-0104-21 OBSOLETE | Service bulletin | Feb 27, 2026 | OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete. |
| T-SB-0119-15 REV2 | Service bulletin | Feb 13, 2026 | OBSOLETE NOTICE February 13, 2026: This bulletin is now obsolete. Please see T-SB-0009-26. |
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 26TC03 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 26TC03 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 26TC03 cover?
The manufacturer filed it against 4 model years: 2025 Toyota RAV4, 2024 Toyota RAV4, 2023 Toyota RAV4, 2022 Toyota RAV4. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.