# Service campaign Dealer 91FN\_20260522

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 campaign
- NHTSA id: 11033461
- Published by NHTSA: 2026\-06\-04
- Manufacturer's number: Dealer 91FN\_20260522
- Manufacturer's date: 2026\-05\-22
- Campaign id or software version: 91FN
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

91FN Dealer Communication \- Revision. Affected vehicles will receive the latest software version via a software update. This software contains an optimized self\-diagnosis function for the high\-voltage battery. In addition to the software update, the high\-voltage battery cells may experience an increased self\-discharge. The high\-voltage battery will be evaluated, and any affected high\-voltage cell modules will be replaced. Updated labor operations.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033461-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033461-9999.pdf)

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

## Vehicles listed

- 2022 to 2023 AUDI Q4 E\-TRON
- 2022 to 2023 AUDI Q4 SPORTBACK E\-TRON

JSON: [/v1/bulletins/11033461](/v1/bulletins/11033461)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20campaign%20Dealer%2091FN_20260522&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11033461&vehicle=Service%20campaign%20Dealer%2091FN_20260522)