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Service bulletin A3921422051558_6

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 id10188595
Published by NHTSA2021-04-06
Manufacturer's numberA3921422051558_6
Manufacturer's date2021-03-02
NHTSA componentELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

NHTSA's summary

This bulletin contains repair instructions for when the message "four-wheel drive malfunction" shows up sporadically in the instrument cluster with DTC C05ED00.

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, Instrument cluster

Trouble codes named

C05ED

Vehicles listed
AUDI A42018, 2019
AUDI A52018, 2019
AUDI A5 CABRIOLET2018 to 2019
AUDI A62018, 2019, 2020
AUDI A72018, 2019, 2020
AUDI AUDI
AUDI Q52018, 2019
AUDI S42018, 2019
AUDI S52018, 2019
AUDI S5 CABRIOLET2018 to 2019
AUDI S62018
AUDI S62019
AUDI S62020
AUDI S72018
AUDI S72019
AUDI S72020
AUDI SQ52018, 2019

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

Recalls for the same vehicles and component
22V1550002022-03-14. ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE:FUEL LEVEL FLOAT/SENSOR/SENDING UNIT
19V4730002019-06-19. AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

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
A9424802055123_52024-05-07. Service bulletin. This bulletin provides information when the rear lighting warning is displayed in the instrument cluster; various DTCs are stored in the comfort system control module.
A9024702072620_12024-02-06. Service bulletin. This bulletin provides information when the Audi presesnse malfunctions or the driver assist systems are inoperable and DTC C12D5FA is stored.
A9024692072619_12024-02-06. Service bulletin. This bulletin provides information when the Presense has a malfunction or if driver assist systems are sporadically inoperative; DTC B200FD9 is stored in the driver assist module.
A9024682072617_12024-02-06. Service bulletin. This bulletin provides information for parking aid inop, DTC B107A16 stored in the driver assistance system with symptom code 233474
A9023642072514_12024-01-04. Service bulletin. This bulletin provides information when the speedometer needle flickers in the Audi virtual cockpit while driving.
A9023562032113_82023-12-06. Service bulletin. This bulletin provides general information about the outside air temperature reading.
A9023362071329_12023-09-01. Service bulletin. This Pending Service Solution requests that technicians create a PSS record in instances where the Audi Virtual Cockpit speedometer needle flickers while driving.
A9023322059335_42023-08-04. Service bulletin. This bulletin provides information for when there is noise from the area around the instrument cluster.
A9123032070046_22023-07-10. Service bulletin. This bulletin provides information for when the emergency call warning appears in the instrument cluster when leaving an area of cellular coverage.
A4323742059665_52023-06-06. Service bulletin. This bulletin provides an SVM update for when the warning light for the suspension appears in the instrument cluster, and the SVM registers an unknown event when carrying out "Check control unit configuration" and cannot be automatically parameterized.