2023 Audi Q7 & Q8 Rear Brake Carrier Bolt Service Action 47T4

Audi has launched Service Action 47T4 to address a potential issue with the rear brake carrier bolts in certain 2023 Audi Q7 and Q8 vehicles. This service action is crucial for vehicle safety and performance, ensuring that the rear brake components are securely fastened. This action specifically targets the rear brake carrier bolts, which may not have been properly hardened during manufacturing.

Owners of affected vehicles should contact their authorized Audi dealer to schedule the necessary repair for the 2023 Audi Q8 rear brake carrier bolts issue. This proactive measure helps maintain the integrity of the braking system and prevents potential safety risks.

Problem Description

On a small number of Audi vehicles manufactured within a specific period, non-hardened bolts may have been used to secure the rear brake calipers. This manufacturing defect means that the affected bolts could potentially come loose over time. Loose rear brake carrier bolts could compromise the integrity of the braking system, potentially leading to reduced braking performance or other safety concerns.

Important Warnings for Owners

Audi has provided several important advisories regarding Service Action 47T4:

• Dealers must ensure that every affected inventory vehicle has this campaign completed before delivery to consumers. This ensures that new owners receive vehicles that meet safety standards.
• This service action will be available for you free of charge only until March 01, 2028. If you wish to have this service performed after this expiration date, your dealership's normal costs associated with this repair will apply.
• Owner notification will take place in February 2023. Owners will receive letters detailing this service action.

Repair Procedure Summary

Service Action 47T4 involves inspecting and, if necessary, replacing the rear brake carrier bolts on both rear caliper carriers. The repair process begins with the technician entering the vehicle's VIN into the Elsa system to verify eligibility and ensure the campaign status shows "open."

1. Inspection: The caliper carrier bolts are torqued to a test value of 90 Nm (Newton meters). The technician checks if the bolts turn at this torque.
2. Bolt Replacement (if seated correctly): If both bolts for a caliper carrier are seated correctly (meaning they do not turn at 90 Nm), only the bolts for that specific caliper carrier will be replaced. The old bolts are removed one at a time, and new bolts (Part Number N-911-268-01) are installed and torqued to 100 Nm + 90°.
3. Caliper Carrier and Bolt Replacement (if not seated correctly): If either bolt for a caliper carrier turns at 90 Nm, it indicates the bolt is not seated correctly. In this scenario, the entire brake caliper carrier (Part Number SEE ETKA) and both bolts (Part Number N-911-268-01) for that carrier must be replaced.

This procedure ensures that all rear brake carrier bolts are properly secured, addressing the issue of non-hardened bolts and preventing them from coming loose. The repair also specifies the use of a spring (Part Number 4K0-698-231-B) and lithium grease (Part Number G-052-150-A2) as needed.

Required Parts

The following parts may be required for Service Action 47T4:

• SCREW: Part Number N-911-268-01 (4 units)
• Brake Caliper Carrier: Part Number SEE ETKA (up to 2 units, if necessary)
• SPRING: Part Number 4K0-698-231-B (1 unit, if necessary)
• LITH.GREAS: Part Number G-052-150-A2 (as needed, shop supply)

Warranty Information

This service action is covered under warranty. The Service Number for this campaign is 47T4, with a Damage Code of 0099. The Causal Indicator is marked as "SELF-LOCKING SCREW." The claim type for sold vehicles is 710, and for unsold vehicles, it is 790.

Labor operations and time units are specified as follows:

• Inspect and replace caliper carrier bolts: Labor Op 4615 56 99, 30 Time Units.
• If one brake caliper carrier required replacement: Includes 1 Wheel remove+reinstall (4405 19 51), Rear brake caliper remove+reinstall (4741 19 50), Replace 1 caliper carrier (4615 19 99, 10 Time Units), Connect battery charger (2706 89 50), and GFF Operations (0151 00 00).
• If two brake caliper carriers required replacement: Includes 2 Wheels remove+reinstall (4405 20 51), 2 Rear brake calipers remove+reinstall (4741 20 50), Replace 2 caliper carriers (4615 20 99, 20 Time Units), Connect battery charger (2706 89 50), and GFF Operations (0151 00 00).

Owner Action

If you own a 2023 Audi Q7 or Q8, it is recommended to contact your authorized Audi dealer as soon as possible to schedule this service. The repair for the 2023 Audi Q8 rear brake carrier bolts issue is estimated to take up to two hours and will be performed free of charge until March 01, 2028. You can also visit www.audiusa.com to locate a dealer or use the Recall/Service Campaign Lookup tool with your Vehicle Identification Number (VIN) to check if your vehicle is affected by Service Action 47T4 or any other open campaigns.

NHTSA ID: 10232490