Toyota bulletin T-TT-0702-22
What it saysTT: Some 2020-2022 vehicles equipped with North American Produced (NAP) A25A-FKS/FXS engines may experience an oil leak from the head/valve cover gasket. NHTSA’s full summary ↓
Toyota filed this with NHTSA as a service bulletin dated Feb 12, 2024, received Aug 15, 2022, about the engine — 2 documents under this number: T-TT-0702-22 Rev and 1 more. It names 14 model years (2020–2022). 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.
Get the next Toyota bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationTT: Some 2020-2022 vehicles equipped with North American Produced (NAP) A25A-FKS/FXS engines may experience an oil leak from the head/valve cover gasket. This issue is currently under investigation.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| T-TT-0702-22 Rev | Service bulletin | Feb 12, 2024 | 10251754 | not found |
| T-TT-0702-22 | Service bulletin | Jul 29, 2022 | 10217808 | not found |
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.
Email me new Toyota bulletins for one of these models
A weekly email, sent only in a week when Toyota files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 14 model years this bulletin names have filed 3,002 complaints with NHTSA since 2015. 382 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.
On the 2020 Toyota RAV4, the 25 owners who gave an odometer reading for Engine reported it at a median of 30,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
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
Engine coolant smell after driving. Doesnt matter how long I drove, 10 minutes or 6 hours, smell is there. Smell is sronger from driver side. Dealership told me it just does that! That they let sit in the parking lot running for an hour and there was no leak. It only has 10k miles on it. It shouldn't reek of hot coolant at all!
2020 Toyota Camry · Engine · filed with NHTSA Sep 19, 2020 · ODI 11359920
The contact owns a 2020 Toyota Rav4 Hybrid. The contact stated that while driving at various speeds, the vehicle hesitated to maintain automotive power. The messages "PKSB Malfunction - Visit your dealer" and "Pre-Collision System Malfunction - Visit your dealer" were displayed on the instrument panel.
2020 Toyota RAV4 · Engine · filed with NHTSA Aug 7, 2025 · ODI 11679078
In depth: 2020 Toyota Camry engine problems → · 2020 Toyota RAV4 engine problems →
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 group50 other manufacturer communications filed against these Toyota models 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-0034-26 REV1 | Service bulletin | Sep 16, 2026 | Some 2025 – 2026 model year Camry HV vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A1B94… |
| 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. |
| 26TC03 | Service campaign | Aug 17, 2026 | In wet conditions, water contacting the radiator in the subject vehicles after idling for an extended period can create steam that can cause… |
| 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-SB-0034-26 | Service bulletin | Jun 30, 2026 | Some 2025 — 2026 model year Camry HV vehicles may exhibit a MIL on condition with DTC P0A1B94… |
| 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… |
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 T-TT-0702-22 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 T-TT-0702-22 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 Toyota warranty extension on file lists the ones Toyota has filed.
Which vehicles does T-TT-0702-22 cover?
The manufacturer filed it against 14 model years: 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, 2022 Toyota Camry, 2021 Toyota Camry, 2020 Toyota Camry and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.