Service bulletin TSB-131-24020
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11006920 |
| Published by NHTSA | 2024-09-04 |
| Manufacturer's number | TSB-131-24020 |
| Manufacturer's date | 2024-08-23 |
| Campaign id or software version | TSB-131-24020 |
| NHTSA component | WHEELS |
| Manufacturer's system | Wheel Speed Sensors |
NHTSA's summary
New operation required for Emira service schedule sheets. During normal road use, it has been identified that dirt/grease/road debris can accumulate around the WSS (Wheel Speed Sensors) and the magnetic rings located on the rear of the hub units. This accumulation may affect the signal being transmitted to the VDDM (Vehicle Dynamics Domain Master), also known as the ABS module, which can result in the generation of diagnostic trouble codes, activating the illumination of the amber colour MIL (Malfunction Indicator Lamp). ACTION To ensure continuing customer satisfaction, Lotus will update the ‘Braking’ section of the V6 and 4-Cylinder Emira service schedule sheets to include a new operation to remove any loose debris on all four WSS using a suitable airline, then inspect and clean the WSS with a clean cloth and brake cleaner to remove any dirt deposits. At the same time the corresponding magnetic rings on the rear of the hub units should also be cleaned. This new procedure should be carried out at every service interval. Emira V6: Original Part Number - LSL689 Updated Part Number - LSL689a Emira 4-Cylinder: Original Part Number - LSL692 Updated Part Number - LSL692a
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
Wheels
| LOTUS EMIRA | 2023 |
|---|---|
| LOTUS EMIRA | 2024 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| TSB-131-24017 | 2024-08-06. Service bulletin. Potential cause of dTPMS (direct Tire Pressure Monitoring System) sensor failure. Lotus has been made aware of that some Emira vehicles have been affected by inaccurate dTPMS tire pressure readings being displayed, or, in some instances, tire pressure readings not being displayed at all. One cause of this issue has been identified as the excessive water-based lubricant being applied to fit the tire valve to the wheel rim at the wheel assembly procedure. The moisture/humidity entering the tire pressure monitoring sensor, causes corrosion and damage to the internal circuits, resulting in communication failures between the sensors and the vehicle. As a production running change, from VIN SCCLEKAX3RHB13186, a smaller quantity of gel-based lubricant is now used to fit the tire valve to the wheel rim. ACTION If diagnosing a dTPMS fault on an Emira (prior to 2024 model year VIN shown above)*, because of inaccurate dTPMS tire pressure readings, or no readings displayed at all, then: - Use the diagnostic flow chart shown on Technical Service Bulletin TSB-131-24009. - If the diagnostic route taken states that the next course of action is to replace a TPMS sensor(s), then request prior authorisation to fit a vehicle set (4) dTPMS sensors. |
|---|---|
| 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. |