2022-2026 Audi Control Unit Inventory Management Notice
Audi has issued Special Notice SM 13-2026, a parts circular instructing dealers to return specific Generation 05S control units without a blue dot. This measure ensures that only acceptable control units are in inventory for various 2022-2026 Audi models.

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- Audi A6
- 2021–2026
- Audi A7
- 2021–2025
- Audi e-tron
- 2021–2022
- Audi Q7
- 2021–2026
- Audi Q8
- 2021–2026
- Audi RS 6 Avant
- 2021–2026
- Audi RS 7
- 2021–2026
- Audi RS Q8
- 2021–2026
- Audi S6
- 2021–2025
- Audi S8
- 2021–2026
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Audi has issued Special Notice SM 13-2026, a parts circular aimed at managing the inventory of certain control units. This notice, dated March 16, 2026, directs dealers to return specific parts to ensure that only approved components are available for service and repairs. This proactive measure helps maintain the quality and performance of critical vehicle systems.
Affected Control Units
This special notice specifically targets several control unit part numbers. Dealers are instructed to review their inventory for these components:
- 4K8-907-639-H
- 4K0-907-639-H
- 4M0-907-639-K
- 4KE-907-639-G
- 4N0-907-639-J
These control units are associated with systems such as forward collision avoidance and adaptive cruise control. The goal is to ensure that only the correct versions of these parts are in circulation.
Identifying Affected Parts
The key to identifying which control units need to be returned is a visual inspection for a blue dot. Generation 05S parts that have a blue dot are considered acceptable and do not need to be returned. However, Generation 05S parts without a blue dot are affected by this notice and must be returned to the Parts Distribution Center (PDC).
For example, the notice illustrates that a part labeled 4N0 907 660 G or 4N0 907 660 A H42 is
Frequently Asked Questions
- What is Audi Special Notice SM 13-2026?
- Audi Special Notice SM 13-2026 is a parts circular issued to dealers, instructing them to manage their inventory by returning specific control units that do not meet current specifications. This ensures that only approved components are used for vehicle repairs and services.
- Which Audi control units are affected by this inventory management notice?
- The notice affects control units with part numbers including 4K8-907-639-H, 4K0-907-639-H, 4M0-907-639-K, 4KE-907-639-G, and 4N0-907-639-J. Additionally, Generation 05S parts, such as 4N0 907 660 G or 4N0 907 660 A H42, are affected if they do not have a blue dot.
- How can dealers identify the control units that need to be returned?
- Dealers must identify Generation 05S control units that do *not* have a blue dot. Parts with a blue dot are acceptable and should remain in inventory. The notice includes visual examples to aid in this identification process.
- What does this Audi control unit inventory notice mean for vehicle owners?
- For owners, this notice is an internal dealer procedure to ensure that only the most current and correct control units are used for repairs, particularly for systems like adaptive cruise control and forward collision avoidance. It helps guarantee that if your vehicle requires service involving these components, the replacement part will be the appropriate, approved version.
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