2021-2022 Audi Q8 Pre Sense Malfunction DTC B130474

Audi has released Technical Service Bulletin (TSB) 69 21 67 2062974/2, dated August 5, 2021, to address instances of a "Pre sense malfunction" message appearing in the driver information system (DIS) of various models, including the 2021-2022 Audi Q8. This TSB supersedes an earlier bulletin, Group 69 number 21-64 dated April 20, 2021, and provides important guidance for technicians and owners regarding these specific fault conditions.

The TSB clarifies that certain diagnostic trouble codes (DTCs), specifically B130474 and B130574, may be stored in the airbag control module (J234, address word 0015) in conjunction with the malfunction message. This document is crucial for understanding the nature of these warnings and the recommended course of action.

Symptoms You Might Notice

Owners of affected Audi vehicles may observe the following conditions:

• A message stating "Pre sense malfunction" is displayed in the driver information system (DIS) immediately after starting to drive.
• The functions of the driver assistance systems may be sporadically disrupted.

Fault Codes / DTCs

When these symptoms occur, workshops may find the following diagnostic trouble codes stored as passive or sporadic entries in the airbag control module, J234 (address word 0015):

DTC Code	Description
B130474	Left front belt tensioner control module, actuator deviates
B130574	Right front belt tensioner control module, actuator deviates

Technical Background of the Issue

Audi's safety belts are equipped with reversible belt tensioners designed to tighten at the start of driving or during certain driving conditions. This ensures the belt rests closer to the occupant's body for optimal safety. The issue arises if the customer repeatedly loosens the seat belt while the tensioner is attempting to tighten it.

After approximately five seconds of this repeated action, the "Pre sense malfunction" message may appear. This behavior can also lead to the storage of DTC B130474 and/or B130574 in the airbag control module.

Important Warnings for Owners

This Technical Service Bulletin provides critical instructions regarding this specific issue. Owners should be aware of the following:

• Do not perform any repairs for this concern. Any repairs attempted may be denied under warranty.
• Parts replacement does not solve this issue. Claims submitted for replaced parts related to this condition will be subject to review by Audi.

Diagnosis and Resolution

According to TSB 69 21 67 2062974/2, the diagnostic trouble codes B130474 and B130574 can be ignored. These DTCs are designed to be deleted automatically when exiting the Guided Fault Finding (GFF) process within the ODIS Service diagnostic system. No physical repair or component replacement is necessary to resolve the 2021 Audi Q8 Pre Sense malfunction related to these codes.

Warranty Information

For vehicles still under warranty, claims can be submitted under Claim Type 110 for up to 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, Claim Type G10 applies, requiring owner verification. If the vehicle is outside of any warranty, this Technical Service Bulletin is for informational purposes only.

• Service Number: 6913
• Damage Code: 0040
• Diagnostic Time: GFF 0150 0000 (Maximum 30 Time Units)
• Road Test: No allowance (0 Time Units)

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to audit.

NHTSA ID: 10200441