Mitsubishi bulletin TSB-24-55-001
What it saysThis Technical Service Bulletin provides instruction to reprogram the ECU to address the heater not working propery when using Mitsubishi Connect APP during tempertures below 5°F. NHTSA’s full summary ↓
Mitsubishi filed this with NHTSA as a service bulletin dated May 8, 2024, received Jun 7, 2024, about the visibility/wiper. It names 2 model years (2023–2024). 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 communicationThis Technical Service Bulletin provides instruction to reprogram the ECU to address the heater not working propery when using Mitsubishi Connect APP during tempertures below 5°F.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB-24-55-001 | Service bulletin | May 8, 2024 | 11001196 |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| MB991824 | — | — | |
| MB992744 | — | — | |
| MB991910 | — | — | |
| MB992745 | — | — | |
| MB991827 | — | — | |
| MB992747 | — | — |
Read by machine from the document NHTSA serves (43 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 85 complaints with NHTSA since 2015. 21 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.
Check engine light is on. My car is still under 5 year bumper to bumper warranty. My local mitsubishi dealership closed and the nearest one is hours away. I also have a recall. I have called mitsubishi customer service several times only to be put on hold without the ability to talk to someone to get these problems solved
2023 Mitsubishi Outlander · Electrical System · filed with NHTSA Jul 9, 2025 · ODI 11672356
My 2024 Outlander locked all the doors while the engine was running and the FAST key was inside the vehicle. I exited normally through the driver’s door and did not intentionally lock the vehicle.
2024 Mitsubishi Outlander · Electrical System · filed with NHTSA Aug 10, 2026 · ODI 11755906
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-23-55-002REV | Service bulletin | Dec 16, 2024 | This Revised Technical Service Bulletin provides instructions to reprogram the HVAC ECU software for the A/C Auto Amplifier when cool air is… |
| 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… |
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-24-55-001 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-24-55-001 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-24-55-001 cover?
The manufacturer filed it against 2 model years: 2024 Mitsubishi Outlander, 2023 Mitsubishi Outlander. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.