2025 Audi A5 Front Assist Intervention TSB 91 24 89 2076135/1

Audi has released Technical Service Bulletin (TSB) 91 24 89 2076135/1, dated November 26, 2024, to address customer concerns regarding the active front assist system. This TSB provides detailed information for technicians to understand and diagnose instances where the active front assist system intervenes. This information is relevant for owners of 2025 Audi A5, S5, Q6 e-tron, and SQ6 e-tron models who might observe a "2025 Audi A5 front assist intervention" message or related warning icons.

Symptoms

Owners may report that "The front assist is intervening." This intervention is typically accompanied by a visual warning. The "Front assist icon displayed on the instrument cluster or the MMI" will appear if the system initiates actions such as:

• Collision warning
• Brake jolt
• Automatic brake pressure increase
• Automatic brake intervention

Additionally, if the swerve assist system is active, a distinct "Swerve assist activation icon" will be displayed.

Understanding Active Front Assist Interventions

The TSB details various types of interventions performed by the active front assist system, each serving a specific purpose to enhance safety:

• Preliminary Warning: If a potential collision risk is detected, the driver receives a visual and acoustic warning to alert them of the danger.
• Main Warning: In cases of immediate collision risk, an acute warning is issued, often as a short brake jolt. This prompts the driver to take evasive action or brake hard to avoid the collision.
• RAB (Reaction Time-Increasing Automatic Braking): This function initiates partial braking early, increasing the time available for the driver to react to an impending collision. It also reduces the potential impact speed.
• DAB (Deescalating Automatic Braking): This involves automatic braking to reduce the severity of a potential collision.
• AFB (Automatic Braking to a Stop): In critical situations, such as at intersections or when driving at low speeds, the vehicle is automatically braked to a complete stop. This helps prevent collisions with oncoming vehicles or pedestrians/cyclists.
• FZB (Driver-Triggered Controlled Braking): If the driver does not brake sufficiently in a critical situation, this function increases the braking force they apply to help avoid a collision.
• AWU (Swerve Support): This corrective steering function assists the driver in evasive maneuvers when there is a risk of a frontal collision. The system checks for sufficient space to swerve and provides steering assistance, potentially including partial braking of individual wheels.
• ANA (Automatic Emergency Swerve): This function performs an automatic evasive steering intervention if a frontal collision risk is detected and there is sufficient space to avoid the collision through an automatic maneuver.

Diagnostic Procedure

To investigate a reported "2025 Audi A5 front assist intervention" event, technicians utilize the "Active front assist" test program within the ODIS-S diagnostic system. The test program can be accessed via the following path:

Test plan > Select self-test > Diagnostic capable system > 00A5 - Front sensors for driver assistant systems - R242 > 00A5 - Technical Service Bulletin (TSB) > Active front assist

This program allows technicians to enter the date of an intervention. It then checks for active front assist interventions that occurred within three days before and three days after the specified date, providing a detailed list of all interventions during that period.

Important Warranty Information

This Technical Service Bulletin 91 24 89 2076135/1 is informational only if the vehicle is outside of its warranty period. For warranty claims, the Service Number is 9163 and the Damage Code is 0039. Labor operations GFF (0150 0060 and 0150 0010) are associated with the diagnostic protocol and SRT. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Source: NHTSA ID 11011287