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Service bulletin Circ93M3REV1

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 id10203604
Published by NHTSA2021-12-07
Manufacturer's numberCirc93M3REV1
Manufacturer's date2021-11-18
NHTSA componentSERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE

NHTSA's summary

A software update to improve range is being carried out on Audi e-tron vehicles. Updated claiming and work instructions with brake basic setting information

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

Brakes

Vehicles listed
AUDI E-TRON2019

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

Recalls for the same vehicles and component
20261872026-04-15. Brakes
20246702024-11-04. Brakes
20244842024-08-19. Brakes
24V6210002024-08-19. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

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
TSB_2069904_22025-11-08. Service bulletin. This bulletin provides information for all models regarding brake sounds.
TSB_2075120_22025-11-08. Service bulletin. This bulletin provides information regarding the general approach for all Audi vehicles regarding brake vibrations.
TSB_2072304_32025-11-08. Service bulletin. This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.
TSB_2069078_32025-11-08. Service bulletin. This bulletin provides information on the zirconium insercts in the brake piston (ceramic brakes only).
TSB_2067132_32025-11-08. Service bulletin. This bulletin provides information when there is corrosion on the friction survace of steel brake discs.
A4624592069078_22024-10-28. Service bulletin. This bulletin provides informaion regarding zirconium inserts in the bake piston for vehicle equipped with ceramic brakes.
A4524512061908_52024-10-28. Service bulletin. This bulletin provides information when there are warning messages in instrument cluster, DTC P060C00 or DTC C051F00 are stored in the electric drive or ABS modules.
A4524492075120_12024-10-28. Service bulletin. This bulletin provides information regarding the general approach to brakes rubbing.
A4524452072977_32024-08-06. Service bulletin. This bulletin provide sinformation when the ABS/ESC Control unit cannot be reached; DTC U012100 "ABS Control Module no communication."
A4524412073483_12024-04-04. Service bulletin. This bulletin provides information when the ABS/ESC control unit cannot be reached "DTC U012100 - ABS Control module no communication" is stored.