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Service bulletin A9420232047618_4

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 id10174050
Published by NHTSA2020-05-07
Manufacturer's numberA9420232047618_4
Manufacturer's date2020-04-20
NHTSA componentEXTERIOR LIGHTING

NHTSA's summary

This bulletin contains instructions for when the rear lid is closed but the lights on the rear bumper do not switch over to the main lights on the rear lid.

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

Lighting

Vehicles listed
AUDI Q72017, 2018, 2019, 2020, 2021

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

Recalls for the same vehicles and component
20251672025-03-31. Lights And Instruments
16V6420002016-09-06. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING
20164272016-09-02. Lights And Instruments

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
A9424792063739_22024-05-07. Service bulletin. This bulletin provides information when the headlights do not turn off during daylight hours.
A9424782070694_22024-05-07. Service bulletin. This bulletin provides information when there is a functional issue with the lights in the rear lid; B146C29.
A9424732012749172024-04-05. Service bulletin. This bulletin provides information when the exterior lights have moisture accumulation.
A9424722073282_12024-04-04. Service bulletin. This bulletin provides information on visual concerns with the headlight lens.
A9423672071954_12023-11-06. Service bulletin. This bulletin provides information pertaining to when there are foreign objects inside of a headlight or taillight.
A9023462070332_22023-11-06. Service bulletin. This bulletin provides information for when the turn signal is very loud with Virtual Cockpit.
A9423652061922_32023-07-10. Service bulletin. This bulletin provides detailed information on the proper documentation of optical concerns for headlights and taillights.
A9023252070332_12023-06-06. Service bulletin. This bulletin provides information for when the turn signal is unusually loud.
A0023692031473_42023-06-06. Service bulletin. This bulletin provides information for when car wash bristles become stuck in the body gap between the headlight and fender.
A9423632061922_22023-06-06. Service bulletin. This bulletin provides details on how to properly document optical concerns in headlights and taillights for warranty submissions.