Service bulletin TSB-131-24003

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10251944
Published by NHTSA	2024-03-20
Manufacturer's number	TSB-131-24003
Manufacturer's date	2024-02-24
NHTSA component	ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

NHTSA's summary

Installation of the latest ECM software for Emira vehicles in the Federal market to ensure that they meet the current CARB compliance requirements. Check and identify any affected Emira vehicles from inventory stock, dealer demonstrators to ensure that this campaign action is performed at the first opportunity. Install the new software part number V6 J1U4 as stated on Service Bulletin 131-24003

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine

Vehicles listed
LOTUS EMIRA	2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
131-26007 Issue 3	2026-10-07. Service bulletin. Emira 4-Cylinder vehicles only - Issue 3 includes updated information on thermostat the testing method and replaces version 2 of this bulletin published on 05.08.2026. Diagnosing 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. ACTION If DTC P2CEF00 has been generated, then raise a technical ticket on LCMS (Lotus Cars Management System) and follow the procedure shown in TSB.
131-26009	2026-04-13. Service bulletin. Availability of ASO exhaust muffler (rear silencer) valve actuator as service replacement part. Until recently the failure of the exhaust muffler valve actuator has required the exhaust muffler and valve to be renewed as a complete assembly. The exhaust muffler valve actuator is now available as a separate replacement part. The advantages of not having to replace the combined assembly are for a faulty actuator are: - Less labour-intensive procedure to replace. - More practical to keep an exhaust muffler valve actuator as a parts stock item. If an exhaust muffler valve actuator is diagnosed as faulty then please determine if the exhaust flow valve mechanism in the rear silencer is operating and moving correctly, if it is then please fit a new valve actuator instead of a complete muffler assembly. Actuator replacement is only suitable if the exhaust flow valve mechanism in the rear silencer is operating and moving correctly. If the exhaust flow valve is not operating or seized, then the exhaust silencer or actuator assembly should be replaced.
131-26007	2026-04-13. Service bulletin. Diagnosing 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.
131-26004	2026-02-09. Service bulletin. Under certain conditions the warning message shown to the right can be activated in the driver display when both the brake lamps and a turn signal are activated at the same time. The cause of this issue has been identified as the unique Federal rear lamp combined position/brake/turn indicator configuration. Even with this message displayed, the tail lamp and turn signal should work as intended. Fit the tail lamp link harness between the connectors. Repeat the procedure on the right-hand side rear tail lamp. Put the vehicle into active or driving mode and activate the brake lamps and turn signals at the same time to ensure that the warning massage does not appear in the driver display before refitting the wheel arch liners and rear wheels.
131-25020	2025-12-10. Service bulletin. Updating the ECM (Engine Control Module), to the latest level software. REASON - A new ECM SW update is available on EmiraDS to resolve the following issues: - The false setting of U010900 DTC (Diagnostic Trouble Code). - Reduce the delay time between pressing the start button and engine cranking for vehicles with lower tolerance fuel pump pressure. ACTION - Check and identify any affected Emira vehicles from your inventory stock, dealer demonstrators and customer vehicles to ensure that this campaign action is performed at the first opportunity. - Any affected vehicle’s campaign status will be displayed on the Lotus Commercial Management System (LCMS). NOTE: This SW update will not affect current vehicle functionality
131-25011	2025-08-05. Service bulletin. Updating the CEM (Central Electronic Module), to the latest level software. A new CEM SW update is being installed as a production running change. This new SW update will implement the Car Configuration Logic changes to reduce the DTCs reported when cars with a non-convenience seat pack are requested, (memory seats and auto angling mirrors not fitted). - Check and identify any affected Emira vehicles from your inventory stock, dealer demonstrators and customer vehicles to ensure that this campaign action is performed at the first opportunity. Any affected vehicle’s campaign status will be displayed on the Lotus Commercial Management System (LCMS). NOTE: This CEM SW update will not affect current vehicle functionality Preparation: Using the Lotus Insight tool, the Emira Diagnostic System will show the availability of a new software version for the CEM. Note: This MUST be done using the Lotus Insight Tool.
TSB-131-24012	2024-05-07. Service bulletin. Technical Service Bulletin issued to ensure the correct use of the EmiraDS and the Lotus insight too to prevent vehicle or diagnostic issues. Bulletin contains information that has been prepared in an attempt to resolve recent issues reported to Technical Support and to prepare the global dealers for the release of the additional functions within EmiraDS to support the Emira 2L version. Information contained in the TSB must be followed to ensure optimum performance of the EmiraDS with the Lotus Insight tool.
TSB-131-24009	2024-05-07. Service bulletin. Trouble shooting flow chart to show the process of self-diagnosing tyre pressure monitoring system faults before contacting Emira Support. The descriptions of Diagnostic Trouble Codes (DTC’s), generated if a fault is detected in the TPMS, may identify the general monitoring system or circuit where a fault has been detected, but may not be able determine the specific module, component, or circuit location at fault. Therefore, DTC information can be misinterpreted by the technician resulting in excessive time, or unnecessary replacement of TPMS module components to rectify the TPMS fault.