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Service bulletin A4821122064018_3

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 id10203475
Published by NHTSA2021-12-07
Manufacturer's numberA4821122064018_3
Manufacturer's date2021-11-04
NHTSA componentEXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS:UNIT

NHTSA's summary

This bulletin contains a software update to address a red steering warning light with DTC C10AC07 stored.

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

Trouble codes named

C10AC

Vehicles listed
AUDI A62019, 2020, 2021
AUDI A6 ALLROAD2020, 2021
AUDI A72019, 2020, 2021
AUDI A7 E2021
AUDI A82019, 2020
AUDI A82021
AUDI AUDI
AUDI Q52019, 2020, 2021
AUDI Q5 PHEV2020 to 2021
AUDI Q72019, 2020, 2021
AUDI Q82019, 2020, 2021
AUDI RS 6 AVANT2021
AUDI RS 72021
AUDI RS Q82020, 2021
AUDI RS62020
AUDI RS72020
AUDI S62020, 2021
AUDI S72020, 2021
AUDI SQ52019, 2020, 2021
AUDI SQ72020, 2021
AUDI SQ82020, 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

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
SM 52-20242024-10-26. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
SM 52-20242024-10-26. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
SM 52-20242024-10-26. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
SM 52-20242024-10-26. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
SM 52-20242024-10-26. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
SM 52-20242024-10-26. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
SM 52-20242024-10-26. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
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.