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Service Bulletin

2025 Audi Driver Assist System Fault U110100 TSB

Audi has released TSB 2079729/2 to address various driver assist system messages and the diagnostic trouble code U110100 in 2025 Audi A5, S5, Q5, and SQ5 models. This issue stems from a software problem in the electronic central electric control unit.

ByAhmet Topcu — Founder & Editor-in-Chief2025 Audi A5
2025 Audi A5 — 2025 Audi driver assist U110100
Editorial illustration generated for this article.
U1101002079729/2PSS TSB 2078209TSB 2079690Component protection activeU110100: Component protection active, active/static, symptom: 1231633warning display symbols -> active warning warning displayemergency braking function -> automatic emergency braking (Front Assist)Electronic central electric J519Audi driver assist system fault U110100

Also applies to

Audi Q5
2025
Audi S5
2025
Audi SQ5
2025

Important Warnings

Owners should be aware of the following notice from Audi regarding the software update:

The software update described in TSB 2079690 will be released in stages for the individual vehicle models, depending on availability.

Symptoms

Owners of affected 2025 Audi vehicles may experience various messages and functional issues related to their driver assist systems. These symptoms are often linked to the diagnostic trouble code U110100. Common complaints include:

  • "warning display symbols -> active warning warning display"
  • "cross-traffic assist -> cross-traffic assist monitoring mode activation"
  • "driver information system (DIS, MFI, MMI) -> text display"
  • "emergency braking function -> automatic emergency braking (Front Assist)"
  • "lane change assistance -> lane change assist monitoring mode activation"
  • "exit warning system -> exit warning caused by an object"
  • "exit warning system -> exit warning system monitoring mode activation"
  • "indicator display symbols -> exit warning system indicator display"
  • "driver information system (DIS, MFI, MMI) -> text display without cause"
  • "cross-traffic assist -> cross-traffic warning caused by an object"

These messages indicate that the driver assist systems, such as adaptive cruise control, emergency braking, lane change assist, and exit warning systems, may not be functioning correctly or are showing warnings without an apparent cause.

Fault Codes / DTCs

When diagnosing this issue, technicians will typically find the diagnostic trouble code (DTC) U110100 logged in various control units. This code specifically indicates that

Frequently Asked Questions

What does the DTC U110100 mean for my Audi?
The diagnostic trouble code U110100, specifically "Component protection active," indicates that the component protection feature in various driver assist system control units, such as short-range radars and adaptive cruise control, is active. This prevents these systems from functioning correctly, leading to warnings and malfunctions.
What are the common symptoms of the 2025 Audi driver assist U110100 problem?
Owners may experience various warning messages on their dashboard or driver information system, such as "active warning warning display," "automatic emergency braking (Front Assist)" malfunctions, or issues with lane change assist and exit warning systems. These indicate that the driver assist features are not working as intended due to the underlying software issue.
How is the 2025 Audi driver assist U110100 issue resolved?
The resolution for the 2025 Audi driver assist U110100 problem involves a software update to the onboard supply control unit (J519). This update corrects the issue that prevents component protection in the short-range radars from deactivating, restoring proper functionality to the driver assist systems. This is outlined in TSB 2079729/2.
Is the repair for TSB 2079729/2 covered under warranty?
Yes, if your vehicle is still within its warranty period, the software update described in TSB 2079729/2 should be covered by Audi. If the vehicle is outside of warranty, the Technical Service Bulletin is informational only, and costs may apply. Always confirm coverage with your authorized Audi dealer.
What is the significance of TSB 2079729/2?
TSB 2079729/2 is a Technical Service Bulletin released by Audi to address a specific software issue affecting driver assist systems in certain 2025 Audi models. It provides diagnostic information, confirms the cause (software in J519), and outlines the necessary software update to resolve the 'Component protection active' fault (U110100) and related symptoms. This TSB supersedes PSS TSB 2078209.

Other revisions of this TSB

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