WenmarOpen by Wenmar Pro

Service bulletin TSB_2074258_1

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)
TypeService bulletin
NHTSA id11036916
Published by NHTSA2026-09-04
Manufacturer's numberTSB_2074258_1
Manufacturer's date2026-08-21
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This bulletin provides information when the yellow electrical system warning lamp is illuminated; DTC B1581F4, B168A00.

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

Trouble codes named

B1581, B168A

Vehicles listed
AUDI Q4 E-TRON2024
AUDI Q4 SPORTBACK E-TRON2024

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