Lotus bulletin 131-26007
What it saysDiagnosing medium temperature engine coolant thermostat operation to prevent unnecessary thermostat replacement. NHTSA’s full summary ↓
Lotus filed this with NHTSA as a service bulletin dated Sep 30, 2026, received Apr 13, 2026, about the engine — 2 documents under this number: 131-26007 Issue 3 and 1 more. It names 5 model years (2023–2027). 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 communicationDiagnosing medium temperature engine coolant thermostat operation to prevent unnecessary thermostat replacement. The information in this bulletin is intended as a procedure that should be performed if a 4-cylinder Emira has generated Diagnostic Trouble Code (DTC) P2CEF00 Auxiliary Thermostat “A” Stuck Open (see image for thermostat location). Generation of DTC P2CEF00 may also result in: - Illumination of the Malfunction Indicator Lamp (MIL). - A low coolant temperature warning message being displayed. IMPORTANT: Do not continue with the procedure in this bulletin If DTC P2CEF00 has NOT BEEN generated. 1. If the thermostat MOVES FREELY when heated and cooled, then refit the original thermostat with a new gasket and refill the engine with new antifreeze/coolant. 2. If the thermostat DOES NOT move freely when heated and cooled, then fit a NEW thermostat and gasket and refill the engine with new antifreeze/coolant. Carefully package the thermostat and contact Emira Support using LCMS to arrange collection.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 131-26007 Issue 3 | Service bulletin | Sep 30, 2026 | 11038270 | PDF, 437 KB |
| 131-26007 | Service bulletin | Mar 11, 2026 | 11031268 | PDF, 479 KB |
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 themAlso filed against model years this site has no page for: 2023 Lotus Emira.
A 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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A weekly email, sent only in a week when Lotus 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 4 model years this bulletin names have filed 1 complaint 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 engine
Source: same model, same component group3 other manufacturer communications filed against the Lotus Emira under the same component group (engine), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 131-26009 | Service bulletin | Apr 13, 2026 | Availability of ASO exhaust muffler (rear silencer) valve actuator as service replacement part. Until recently the failure of the exhaust mu… |
| 131-25020 | Service bulletin | Nov 3, 2025 | Updating the ECM (Engine Control Module), to the latest level software. REASON - A new ECM SW update is available on EmiraDS to resolve the… |
| TSB-131-24003 | Service bulletin | Feb 24, 2024 | Installation of the latest ECM software for Emira vehicles in the Federal market to ensure that they meet the current CARB compliance requir… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Lotus, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Lotus 131-26007 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 131-26007 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.
Which vehicles does 131-26007 cover?
The manufacturer filed it against 5 model years: 2027 Lotus Emira, 2026 Lotus Emira, 2025 Lotus Emira, 2024 Lotus Emira, 2023 Lotus Emira. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.