# Over\-the\-air update TCU\-25.2.5.5 E\-Transit

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: Over\-the\-air update
- NHTSA id: 11021527
- Published by NHTSA: 2025\-08\-06
- Manufacturer's number: TCU\-25.2.5.5 E\-Transit
- Manufacturer's date: 2025\-07\-17
- Campaign id or software version: TCU\-25.2.5.5
- NHTSA component: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM

## NHTSA's summary

Quality improvements include: \-Addresses key off load battery usage caused by Accessory Protocol Interface Module \(APIM\) remaining awake. Telematics Control Unit is updated to match the APIM software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021527-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021527-9999.pdf)

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

## Components

Electrical system, Fuel system

## Vehicles listed

- 2023 FORD E\-TRANSIT

JSON: [/v1/bulletins/11021527](/v1/bulletins/11021527)

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