# Service bulletin 23B12

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: 11007073
- Published by NHTSA: 2024\-09\-05
- Manufacturer's number: 23B12
- Manufacturer's date: 2024\-08\-22
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

Certain 2021\-2022 Model Year Mustang Mach E and 2022 Model Year E\-Transit High Voltage Battery Module \(HVBM\) Replacement In all of the affected vehicles, a High Voltage Battery Module \(HVBM\) was previously replaced using an incorrect Thermal Interface Material \(TIM\) template. A HVBM that has been serviced using the incorrect TIM template may cause the cells to operate at a temperature higher than design intent, resulting in reduced cell performance and, over time, a progressive reduction in vehicle range that may become noticeable to the driver. This may also result in a malfunction indicator light, DTC code and battery power limiting.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11007073-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11007073-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Vehicles listed

- 2022 FORD E\-TRANSIT
- 2021 to 2022 FORD MUSTANG

JSON: [/v1/bulletins/11007073](/v1/bulletins/11007073)

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