April 26, 2021 NHTSA CAMPAIGN NUMBER: 21V295000
A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.
NHTSA Campaign Number: 21V295
Manufacturer Volkswagen Group of America, Inc.
Components
Potential Number of Units Affected 40,993
Summary
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2019-2021 RS5 coupe, A5 Sportback, S5 Sportback, RS5 Sportback vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion.
Remedy
Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi’s number for this recall is 42L1.
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.safercar.gov.
Check if your Audi has a Recall
Issue:
Due to stress corrosion cracking on lock nuts of particular production batches, the nut of the excentric bolt on the trailing arm of the rear axle may break which may cause alterations in the wheel alignment of the rear axle. This could be noticed by a steering wheel misalignment when driving straight ahead or by the vehicle pulling to one side when braking or accelerating. It cannot be ruled out that the rear axle could suddenly and uncontrollably move in the wrong direction at higher speeds. This can lead to a loss of vehicle control and a crash without warning.
Precautions
If this condition is present in the vehicle, the driver may notice a steering wheel misalignment when driving straight ahead or the vehicle pulling to one side when braking or accelerating.
Should this occur, owners are advised to contact an authorized Audi dealer without delay and make arrangements to have the vehicle inspected/repaired.
Repair:
REPAIR AVAILABLE – May 28, 2021 – REPAIR DESCRIPTION
See ELSA/ServiceNet for complete repair & claiming instructions
Check daily campaign open inventory report or OMD for affected vehicles in inventory
Repair every affected inventory vehicle before delivery to consumers.
Affected Vehicles
Country | Beginning Model Year | Ending Model Year | Vehicle | Vehicle Count |
USA | 2020 | 2021 | A4 ALLROAD | 442 |
USA | 2020 | 2021 | A4 SEDAN | 5,097 |
USA | 2020 | 2021 | A5 CABRIOLET | 433 |
USA | 2020 | 2021 | A5 COUPE | 469 |
USA | 2019 | 2021 | A5 SPORTBACK | 2,148 |
USA | 2020 | 2021 | A6 ALLROAD | 371 |
USA | 2020 | 2021 | A6 SEDAN | 2,760 |
USA | 2020 | 2021 | A7 | 254 |
USA | 2020 | 2021 | A8 | 282 |
USA | 2020 | 2021 | Q5 | 19,246 |
USA | 2021 | 2021 | Q5 SPORTBACK | 3 |
USA | 2021 | 2021 | Q7 | 2,727 |
USA | 2021 | 2021 | Q8 | 1,156 |
USA | 2019 | 2021 | RS5 COUPE | 76 |
USA | 2019 | 2021 | RS5 SPORTBACK | 157 |
USA | 2021 | 2021 | RS6 AVANT | 176 |
USA | 2021 | 2021 | RS7 | 270 |
USA | 2021 | 2021 | RS Q8 | 116 |
USA | 2020 | 2021 | S4 SEDAN | 498 |
USA | 2020 | 2021 | S5 CABRIOLET | 142 |
USA | 2020 | 2021 | S5 COUPE | 129 |
USA | 2019 | 2021 | S5 SPORTBACK | 839 |
USA | 2020 | 2021 | S6 SEDAN | 293 |
USA | 2020 | 2021 | S7 | 167 |
USA | 2020 | 2021 | S8 | 90 |
USA | 2020 | 2021 | SQ5 | 2,649 |
USA | 2021 | 2021 | SQ5 SPORTBACK | 3 |
CAN | 2020 | 2021 | A4 ALLROAD | 62 |
CAN | 2020 | 2021 | A4 SEDAN | 842 |
CAN | 2020 | 2020 | A5 CABRIOLET | 24 |
CAN | 2020 | 2020 | A5 COUPE | 52 |
CAN | 2019 | 2021 | A5 SPORTBACK | 403 |
CAN | 2020 | 2021 | A6 ALLROAD | 28 |
CAN | 2020 | 2021 | A6 SEDAN | 44 |
CAN | 2020 | 2021 | A7 | 18 |
CAN | 2020 | 2021 | A8 | 5 |
CAN | 2020 | 2021 | Q5 | 2,745 |
CAN | 2021 | 2021 | Q5 SPORTBACK | 1 |
CAN | 2021 | 2021 | Q7 | 132 |
CAN | 2021 | 2021 | Q8 | 113 |
CAN | 2019 | 2021 | RS5 COUPE | 21 |
CAN | 2021 | 2021 | RS5 SPORTBACK | 10 |
CAN | 2021 | 2021 | RS6 AVANT | 37 |
CAN | 2021 | 2021 | RS7 | 23 |
CAN | 2021 | 2021 | RS Q8 | 41 |
CAN | 2020 | 2021 | S4 SEDAN | 85 |
CAN | 2020 | 2021 | S5 CABRIOLET | 20 |
CAN | 2020 | 2021 | S5 COUPE | 75 |
CAN | 2020 | 2021 | S5 SPORTBACK | 265 |
CAN | 2020 | 2021 | S6 SEDAN | 23 |
CAN | 2020 | 2021 | S7 | 12 |
CAN | 2020 | 2021 | S8 | 8 |
CAN | 2020 | 2021 | SQ5 | 306 |
CAN | 2021 | 2021 | SQ5 SPORTBACK | 1 |
Problem Description
Due to stress corrosion cracking on lock nuts of particular production batches, the nut of the eccentric bolt on the trailing arm of the rear axle may break which may cause alterations in the wheel alignment of the rear axle. This could be noticed by a steering wheel misalignment when driving straight ahead or by the vehicle pulling to one side when braking or accelerating.
It cannot be ruled out that the rear axle could suddenly and uncontrollably move in the wrong direction at higher speeds. This can lead to a loss of vehicle control and a crash without warning.
Corrective Action
The affected lock nut will be replaced. If the screw connection is already damaged, it will be replaced completely.
Precautions
If this condition is present in the vehicle, the driver may notice a steering wheel misalignment when driving straight ahead or the vehicle pulling to one side when braking or accelerating. Should this occur, owners are advised to contact an authorized Audi dealer without delay and make arrangements to have the vehicle inspected/repaired.
Code Visibility
On or about May 28, 2021, the campaign code was applied to affected vehicles.
Owner Notification
Owner notification will take place in June 2021. Owner letter examples are included in this bulletin for your reference.
Repair Overview
A4 and A5 variants: Replace left and right control arm nuts at the connection to the subframe.
All other models: Replace left and right control arm nuts at the subframe and at the wheel bearing housing.
36 Affected Products
Vehicles
MAKE | MODEL | YEAR |
AUDI | A4 | 2020-2021 |
AUDI | A5 | 2019-2021 |
AUDI | A6 | 2020-2021 |
AUDI | A7 | 2020-2021 |
AUDI | A8 | 2020-2021 |
AUDI | Q5 | 2020-2021 |
AUDI | Q7 | 2021 |
AUDI | Q8 | 2021 |
AUDI | RS Q8 | 2021 |
AUDI | RS5 | 2019-2021 |
AUDI | RS6 | 2021 |
AUDI | RS7 | 2021 |
AUDI | S4 | 2020-2021 |
AUDI | S5 | 2019-2021 |
AUDI | S5 CABRIOLET | 2020-2021 |
AUDI | S6 | 2020-2021 |
AUDI | S7 | 2020-2021 |
AUDI | S8 | 2020-2021 |
AUDI | SQ5 | 2020-2021 |
16 Associated Documents
Remedy Instructions and TSB
RCRIT-21V295-6955.pdf 1885.402KB
Defect Notice 573 Report
RCLRPT-21V295-6898.PDF 229.445KB
Recall Acknowledgement
RCAK-21V295-1320.pdf 701.478KB
Manufacturer Notices(to Dealers,etc) – AUDI Date: May 28, 2021 Repair Available Safety Recall 42L1 / Rear Axle Trailing Arm Lock Nut
RCMN-21V295-1303.pdf 723.367KB
Remedy Instructions and TSB
RCRIT-21V295-3014.pdf 1770.126KB
Manufacturer Notices(to Dealers,etc) – AUDI Date: May 28, 2021 Repair Available Safety Recall 42L1 / Rear Axle Trailing Arm Lock Nut
RCMN-21V295-8789.pdf 212.272KB
Recall Quarterly Report #1, 2021-2
RCLQRT-21V295-9233.PDF 211.147KB
ISSUED Owner Notification Letter(Part 577) – 42L1_Audi Customer PRI
RCONL-21V295-8848.pdf 156.778KB
ISSUED Owner Notification Letter(Part 577) – 42L1_Audi Customer
RCONL-21V295-3717.pdf 140.733KB
Date June 17, 2021 42L1 Campaign Tip Wind Deflector Pins
RMISC-21V295-7405.pdf 349.244KB
Remedy Instructions and TSB
RCRIT-21V295-1860.pdf 1770.028KB
Manufacturer Notices(to Dealers,etc) – AUDI Date: May 04, 2021 Advance Notice Safety Recall 42L1 / Rear Axle Trailing Arm Lock Nut
Remedy Instructions and TSB
RCRIT-21V295-1559.pdf 1420.178KB
Remedy Instructions and TSB
RCRIT-21V295-4001.pdf 1423.326KB
Recall Quarterly Report #2, 2021-3
RCLQRT-21V295-4862.PDF 211.25KB
Recall Quarterly Report #3, 2021-4
RCLQRT-21V295-8518.PDF 211.335KB
Latest Recalls Documents
https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V295&docType=RCL
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