NHTSA recall 21V707000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 21V707000 |
| Manufacturer's number | 47R7 |
| Manufacturer | Volkswagen Group of America, Inc. |
| Reported | 2021-09-13 |
| Owners notified | 2021-09-30 |
| Component | SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP; SERVICE BRAKES, HYDRAULIC |
| Units potentially affected | 38 |
| Part numbers | 4KE.614.100 * |
| Report | Annual report 1, for 2023 quarter 3 to 2024 quarter 2 |
|---|---|
| Filed with NHTSA | 2024-07-30 |
| Vehicles in the campaign | 38 |
| Reported remedied | 38 (100%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2024 quarter 2, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi E-Tron Quattro and E-Tron Sportback Quattro vehicles. Corrosion in the brake booster may cause the Anti-Lock Brake System (ABS), Electronic Stability Control (ESC), speedometer display, and brake assist to stop functioning.
What can happen
A loss of braking assist, ABS, and ESC will increase the effort and distance required to stop, increasing the risk of a crash.
The remedy
Dealers will replace the brake booster, free of charge. Owner notification letters were mailed September 30, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 47R7.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
| 2021 AUDI E-TRON |
|---|
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| A4524412073483_1 | 2024-04-04. Service bulletin. This bulletin provides information when the ABS/ESC control unit cannot be reached "DTC U012100 - ABS Control module no communication" is stored. |
|---|---|
| A4524392072977_1 | 2024-03-06. Service bulletin. This bulletin provides information when the ABS/ESC Control unit cannot be reached; DTC U012100, ABS Control Module no communication is stored. |
| A4523362072304_1 | 2024-01-04. Service bulletin. This bulletin provides information for when the ABS/ESC speed sensor has an implausible signal. |
| A4623452070679_1 | 2023-07-10. Service bulletin. This bulletin provides information for when one or more DC is stored in the ABS control unit related to the parking switch; DTC C100C07 and/or C100C29. |
| A4523332061908_4 | 2023-06-06. Service bulletin. This bulletin provides an SVM update for instances when the DTC P060C00 is stored in the electric drive control module, or DTC C051F00 is stored in the ABS control module. |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.