2023-2025 Audi Lane Departure Warning Activates on Startup TSB

Owners of various 2023-2025 Audi models, including the A6, A6 allroad, S6, RS 6 Avant, A7, S7, RS 7, A8, S8, e-tron GT, RS e-tron GT, Q7, SQ7, Q8, SQ8, RS Q8, e-tron, e-tron Sportback, R8, R7 Spyder, R8 GT, Q8 e-tron, Q8 Sportback e-tron, SQ8 e-tron, and SQ8 Sportback e-tron, may notice that the lane departure warning system sporadically activates on its own when the vehicle starts up. This behavior, detailed in Audi Technical Service Bulletin 2073280/1, occurs even if the system was not active during the previous drive cycle.

Symptoms

The primary symptom of this condition is the Audi lane departure warning startup activation. Vehicle owners will observe the "lane assist symbol" appearing in the instrument cluster shortly after starting the vehicle. This typically happens after the vehicle has been parked for multiple minutes, allowing it to enter a 'bus-sleep' state. The system activates despite not having been active in the prior drive cycle.

Technical Background and Diagnosis

Audi's technical background for TSB 2073280/1 explains that the Audi lane departure warning startup issue is due to startup timing. Specifically, the lane assist activation is not suppressed from activating after the vehicle has been in a bus-sleep state. Workshop findings indicate that "No Relevant DTCs are stored" in connection with this complaint, meaning there are no diagnostic trouble codes that would point to a malfunction.

Important Warnings for Owners

Audi has explicitly stated that "No repair is currently available" for this condition. The Technical Service Bulletin advises technicians to "Do not perform any repairs. Any repairs for this concern may be denied." Owners should be informed that this condition is normal behavior for the vehicle. Furthermore, this TSB is informational only and is "not applicable to any Audi Warranty," meaning any attempts to seek warranty coverage for this specific behavior will likely be unsuccessful.

Workarounds for Owners

While there is no repair, owners can easily deactivate the lane departure warning system if it activates unexpectedly:

• Steering Column Stalk Button: You can deactivate the system by long-pressing the lane keeping button located on the turn signal stalk for more than four seconds. This button is typically marked with a lane assist symbol.
• MMI Driver Assist Settings: In some models, the lane departure warning system can also be deactivated through the driver assist setting menu in the MMI infotainment system. Navigate to the relevant settings and select "Lane Departure Warning" to toggle its status off.

Source: NHTSA ID: 11002250