2021-2022 Audi Driver Assist System Warnings TSB

Symptoms of Driver Assist System Malfunction

Owners of various 2021-2022 Audi models, including the A8 e quattro, A6, A7, A8, e-tron, Q7, Q8, and their performance variants, may experience temporary unavailability of their vehicle's driver assist systems. This condition is typically signaled by specific warning messages displayed on the instrument cluster. These Audi driver assist warnings include:

• "Audi adaptive light: system fault."
• "Audi pre sense: system fault."
• "Adaptive cruise assist: restricted."
• "Adaptive cruise assist: predictive control currently restricted."

A key characteristic of this issue is its intermittent nature. The messages often disappear, and the driver assist systems become available again after the vehicle is turned off and allowed to enter "bus sleep" for a few minutes before being restarted.

Associated Fault Codes (DTCs)

When these symptoms occur, a diagnostic scan at a workshop may reveal specific Diagnostic Trouble Codes (DTCs) stored in the driver assist systems control unit -J1121- (address word 00A5). These DTCs are typically found with a "passive/sporadic" status, indicating that the fault is not continuously present but has occurred intermittently. The TSB 2073986/1 identifies the following relevant DTCs and their associated symptom numbers:

Diagnosis and Trigger Conditions

The presence of these Audi driver assist warnings and DTCs points to an intermittent issue within the driver assistance systems. Diagnosis requires confirming that at least one of the listed DTCs is stored in the driver assist systems control unit -J1121- with its corresponding symptom number and a "passive/sporadic" status. The condition is specifically characterized by the temporary unavailability of driver assist features, which then resolve after a vehicle restart and a period of bus sleep. This TSB (2073986/1) serves as a guide for identifying these specific fault conditions.

Important Warnings and Applicability

Audi Technical Service Bulletin 2073986/1 provides crucial guidance for technicians and owners regarding the applicability of this information:

• IMPORTANT: This TSB does not apply in the event of an active or static DTC entry. It is specifically intended for situations where the DTCs are recorded as passive/sporadic.
• For this TSB to be relevant, at least one of the Diagnostic Trouble Codes (DTCs) mentioned above must be present in the vehicle's system, along with its appropriate symptom number.

Service Action and Repair Procedure

This Technical Service Bulletin, 2073986/1, is primarily an informational document that describes the symptoms and diagnostic trouble codes associated with intermittent Audi driver assist warnings. It does not contain the step-by-step repair procedure itself. Instead, for the actual service and repair instructions to address these issues, technicians are directed to refer to TSB 2069244. This means that while TSB 2073986/1 helps identify the problem, the solution lies in the separate TSB 2069244. There are no specific parts, special tools, or software updates detailed within TSB 2073986/1.

Warranty Information

Audi of America, Inc. states that TSB 2073986/1 is informational only and is not applicable to any Audi Warranty. Owners should consult with their authorized Audi dealership regarding warranty coverage for the repair procedure outlined in TSB 2069244.

What Owners Should Do

If you are experiencing intermittent Audi driver assist warnings on your 2021-2022 Audi, such as "Audi adaptive light: system fault" or "Adaptive cruise assist: restricted," and these messages clear after restarting your vehicle, it is recommended to visit an authorized Audi dealership. Inform them about the symptoms and mention Technical Service Bulletin 2073986/1. The dealership will perform diagnostics to confirm the presence of the specified passive/sporadic DTCs in the driver assist systems control unit -J1121-. They will then refer to TSB 2069244 for the appropriate repair procedure.

Source

NHTSA ID: 11002252