Toyota bulletin TSB002523
What it saysTSB: Hybrid vehicles (HV) and battery electric vehicles (BEV) are equipped with two types of batteries: ?Hybrid vehicle (HV) battery. ?Auxiliary (12V) battery. NHTSA’s full summary ↓
Toyota filed this with NHTSA as a service bulletin dated Feb 19, 2024, received Apr 1, 2024, about the fuel/propulsion system. It names 11 model years (2024). 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 communicationTSB: Hybrid vehicles (HV) and battery electric vehicles (BEV) are equipped with two types of batteries: ?Hybrid vehicle (HV) battery. ?Auxiliary (12V) battery. If a hybrid or battery electric vehicle is put into storage, the State-Of-Charge (SOC) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary. As a matter of policy, Toyota does not provide battery warranty coverage for discharged and/or failed batteries due to lack of maintenance. It is the dealer?s responsibility to maintain the specified SOC of the vehicle?s battery while in stock and ensure proper SOC at delivery. Perform the following maintenance service for the HV battery and auxiliary battery.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB002523 | Service bulletin | Feb 19, 2024 | 10252255 | 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.
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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 11 model years this bulletin names have filed 1,185 complaints with NHTSA since 2015. 87 of them name Fuel/Propulsion 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.
Fuel tank is 17.2 gallons. Refueling on empty only can put in max at 12 gallons when fueling tank is full or stopped. Have never been able to put more than 13 gallons in this tank. Has taken the car to dealer for checking, they came back and said the tank was a 17 gallon tank
2024 Toyota Grand Highlander · Fuel/Propulsion System · filed with NHTSA Jun 11, 2024 · ODI 11593687
After parking car in driveway, a puddle of fuel is left directly under fuel tank. Girlfriend thought it was ac condensation. I stuck my finger in puddle and smelled the gasoline. Girlfriend is taking car to dealer
2024 Toyota RAV4 · Fuel/Propulsion System · filed with NHTSA Oct 22, 2024 · ODI 11621381
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 fuel/propulsion system
Source: same model, same component group5 other manufacturer communications filed against these Toyota models under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26TF01 | Emissions | Sep 10, 2026 | Under certain conditions, debris can accumulate inside the fuel cap causing potential fuel vapor leaks that can cause increased evaporative… |
| T-TT-0808-26 | Service bulletin | Aug 13, 2026 | Customer states MIL ON (P04602A) and fuel gauge indicating incorrect fuel level, showing that there is more/less fuel in the vehicle. |
| TTT074223 | Service bulletin | Nov 9, 2023 | TT: Some 2024 Grand Highlander / Grand Highlander Hybrid vehicles may have a concern of difficult to add more than 12 to 15 gallons of fuel… |
| TSB-0033-23 | Service bulletin | Jun 8, 2023 | TSB: Some 2020 ? 2023 model year Highlander Hybrid and 2021 ? 2023 model year RAV4 Hybrid, RAV4 Prime, Sienna Hybrid, and Venza Hybrid vehic… |
| TSB-0030-23 | Service bulletin | Jun 1, 2023 | TSB: Some 2023 model year Sequoia Hybrid and 2022 ? 2023 model year Tundra and Tundra Hybrid vehicles may exhibit poor acceleration and/or a… |
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 TSB002523 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 TSB002523 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 TSB002523 cover?
The manufacturer filed it against 11 model years: 2024 Toyota Camry, 2024 Toyota Corolla, 2024 Toyota Corolla Cross, 2024 Toyota Grand Highlander, 2024 Toyota Mirai, 2024 Toyota Prius and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.