69 Airbag Warning Light On, PTC B13BCF2 Stored In The Airbag Control Module (GROUP 69, NO. 24-11)
Reference number: GROUP 69, NO. 24-11
Supersedes refnos: 2056406, 2056406/1, 2056406/2, 2056406/3, 2056406/4, 2056406/5, GROUP 69 NO. 22-81, GROUP 69, NO. 19-43, GROUP 69, NO. 21-69, GROUP 69, NO. 22-84, GROUP 69, NO. 23-91
69 AIRBAG WARNING LIGHT ON, PTC B13BCF2 STORED IN THE AIRBAG CONTROL MODULE
TECHNICAL SERVICE BULLETIN
| AUDI: | 2015-2025 All Audi Vehicles |
| GROUP: | 69 - Passenger Protection Systems |
SERVICE INFORMATION
69 24 11 2056406/5 June 26, 2024. Supersedes Technical Service Bulletin Group 69 number 23-91 dated June 30, 2023, for reasons listed below.
| Model(s) | Year | VIN Range | Vehicle-Specific Equipment |
|---|---|---|---|
| All Audi Vehicles | 2015-2025 | All | Not Applicable |
CONDITION
| Revision | Date | Purpose |
|---|---|---|
| 5 | - | Revised header (Add model year 2025) |
| 4 | 06/30/2023 | Revised header (Add model year) |
| 3 | 02/10/2022 | Revised header (Added model year and corrected an Elsa display issue) Revised Service (Added repair information) |
Customer states:
- The airbag warning light is illuminated in the instrument cluster.
Workshop findings:
The following DTC is stored in the airbag control module, J234, (address word 0015):
- DTC B13BCF2 (Multiple collision brake No function) and can be active/static or passive/sporadic.
TECHNICAL BACKGROUND
The "Multiple collision brake" is controlled by the ABS control module, J104, (address word 0003) and part of the ABS/ESC functionality.
If the ABS control module detects an ABS/ESC relevant error, the "Multiple collision brake" is deactivated. In addition, the ESC and airbag warning lights are turned on in the instrument cluster and DTC B13BCF2 is stored in the airbag control module.
If the brake system relevant error is passive/sporadic and not detected again, the ESC warning light is turned off after the next ignition cycle. Any DTCs that were stored in the ABS control module will be erased after 40 ignition cycles if not detected again.
In contrast, the airbag warning light will stay on permanently until the DTC B13BCF2 in the airbag control module is erased manually. The "Multiple collision brake" will stay deactivated as long as DTC B13BCF2 is stored in the airbag control module.
Tip: The airbag warning light indicates that the "Multiple collision brake" has been deactivated by the brake control module. It is a symptom/indicator, not the root cause for the deactivation.
PRODUCTION SOLUTION
Not applicable.
SERVICE
- Connect vehicle to ODIS Service and perform a scan with GFF. Follow GFF for any DTCs that could have caused the deactivation of the ABS/ESC functionality. If these DTCs are present, follow GFF to determine and eliminate the root cause. Once the root cause has been eliminated, delete DTC B13BCF2 in the airbag control module.
- If no DTCs were present that could explain the deactivation of the ABS/ESC functionality, erase the DTC B13BCF2 in the airbag control module.
- If DTC B13BCF2 cannot be cleared, disconnect the scan tool from the DLC. Park the vehicle, witch the ignition off, and then lock the vehicle. After 30 minutes attempt to clear the DTC again. Once B13BCF2 has been cleared, road test the vehicle to verify that no faults return.
- Release the vehicle to the customer without attempting any additional repairs if no faults are returned.
- If the customer experiences this concern again, a vehicle scan with GFF should be performed immediately to determine the root cause.NOTE: Replacing the airbag control module does not solve this issue. Claims for replaced parts will be subject to review.
WARRANTY
| Claim Type: |
|
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| Service Number: | 6953 | ||
| Damage Code: | 0039 | ||
| Diagnostic Time: | GFF | 0150 0000 | Time stated on the diagnostic protocol (Max 50 TU) |
| Road test prior to the service procedure | No allowance | 0 TU | |
| Road test after the service procedure | 0121 0004 | 10 TU | |
| Claim Comment: | As per TSB 2056406/5 | ||
All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures Manual . Claims are subject to review or audit by Audi Warranty.
ADDITIONAL INFORMATION
All parts and service references provided in this TSB (2056406 ) are subject to change and/or removal. Always check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
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