Mitsubishi bulletin TSB-23-55-002REV
What it saysThis Revised Technical Service Bulletin provides instructions to reprogram the HVAC ECU software for the A/C Auto Amplifier when cool air is expelled after the A/C switch is turned off while in ECO drive mode. NHTSA’s full summary ↓
Mitsubishi filed this with NHTSA as a service bulletin dated Dec 16, 2024, received Jan 7, 2025, about the visibility/wiper. It names 2 model years (2022–2023). 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 communicationThis Revised Technical Service Bulletin provides instructions to reprogram the HVAC ECU software for the A/C Auto Amplifier when cool air is expelled after the A/C switch is turned off while in ECO drive mode.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB-23-55-002REV | Service bulletin | Dec 16, 2024 | 11012591 |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| MB991827 | — | — | |
| MB992747 | — | — | |
| MB991824 | — | — |
Read by machine from the document NHTSA serves (12 pages), read Sep 30, 2026. A part number is shown only where it matches Mitsubishi’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. Listings and prices on eBay Motors are the seller’s.
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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 288 complaints with NHTSA since 2015.
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 visibility/wiper
Source: same model, same component group16 other manufacturer communications filed against the Mitsubishi Outlander under the same component group (visibility/wiper), newest first. The eight newest are listed; the rest are on the Mitsubishi list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB-23-55-001 | Service bulletin | Feb 12, 2026 | This revised Technical Service Bulletin provides instructions on how to remedy noise from the HVAC system… |
| TECH TALK 290 | Other | Feb 12, 2026 | Tech Talk is a service newsletter that was sent out to dealers. It covers various topics and reviews the previous months publications. |
| TECH TALK 286 | Other | May 23, 2025 | Tech Talk is a service newsletter that was sent out to dealers. It covers various topics and reviews the previous months publications. |
| TSB-25-54-001 | Service bulletin | Jan 15, 2025 | This Technical Service Bulletin provides instructions to reprogram the low temperature control of the HUD-ECU driver software. |
| TSB-24-55-003 | Service bulletin | Dec 16, 2024 | This Technical Service Bulletin provides instruction to reprogram the A/C Auto Amp so that the blower fan operates even with low outside/coo… |
| TSB-24-55-002 | Service bulletin | Dec 6, 2024 | This Technical Service Bulletin explains that when decelerating using the brake pedal the A/C vent temperature may rise and provides the ste… |
| TSB-22-55-002REV4 | Service bulletin | Nov 15, 2024 | This Revised Technical Service Bulletin provides updated instructions to replace the A/C AUTO AMP and perform reconfiguration of A/C AUTO AM… |
| TECH TALK 282 | Other | Oct 3, 2024 | Tech Talk is a service newsletter that was sent out to dealers. It covers various topics and reviews the previous months publications. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mitsubishi, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mitsubishi TSB-23-55-002REV 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 TSB-23-55-002REV 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 Mitsubishi warranty extension on file lists the ones Mitsubishi has filed.
Which vehicles does TSB-23-55-002REV cover?
The manufacturer filed it against 2 model years: 2023 Mitsubishi Outlander, 2022 Mitsubishi Outlander. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.