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Technical Service Bulletin 2077390/1
Technical Service Bulletin
Transaction No.: 2077390/1
Service info: cracks on friction ring surface on ceramic brake discs
Release date: Mar 25, 2025

Condition

Customer statement:

Significant cracks on surface of the friction ring

 

 

 

 

 

 

Workshop findings:

The issue can be confirmed

No indication of significant thermal stresses

 

Faster processing

Revision history

Transaction no./revision number

Change

2077390/1

First edition

Note:The content of this table is not changed if the subsequent revision only involves a change to the header data of the article.

Technical Background

The new generation of ceramic brake discs (CCB+) show more significant cracks on the surface of the friction ring. These cracks are formed during production when the material cools. The friction ring surface contracts more than the base material and these cracks are the result.

Production Solution

e-tron GT from SOP

RSQ8 from 48/2024

RS3 planned from week 48/2025 onwards

New models from 2025

Service

No measures required.

The functionality of the brake system is not affected by this.

 

There is no reason to replace parts.

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Warranty

This TPI is informational only and not applicable to any Audi Warranty.

Additional Information

All parts and service references provided in this TPI are subject to change and/or removal.

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