Technical Service Bulletin
PSS 90 Audi adaptive light/Audi pre sense malfunction or driver assist systems inop, DTC C12D5FA stored
Supersedes Technical Service Bulletin Group 90 number 21-90 dated February 26, 2021 for reasons listed below.
Date: November 3, 2021
Applicable Models and Years
| Model(s) | Year | VIN Range | Vehicle-Specific Equipment |
|---|---|---|---|
| A6, A7, A8, S6, S7, S8, Q8, and Audi e-tron quattro | 2019-2022 | All | MLBevo2 |
| A6 allroad, Q7, SQ7, SQ8, RS 7, RS Q8, and Audi e-tron sportback quattro | 2020-2022 | All | MLBevo2 |
| A6 Avant, RS 6 Avant | 2021-2022 | All | MLBevo2 |
| Audi e-tron GT, Audi RS e-tron GT | 2022 | All | MLBevo2 |
Condition
REVISION HISTORY
| Revision | Date | Purpose |
|---|---|---|
| 4 | - | Revised header (Added Models and Model Year) |
| 3 | 02/26/2021 | Revised header (Added additional SW version) Revised Service (Changed expected date) |
| 2 | 10/15/2020 | Revised header (Added additional SW version) |
Customer states:
- The driver assistance systems are inoperable.
- A warning message is displayed in the instrument cluster.
For example:
- "Audi adaptive light malfunction".
- "Audi pre sense system error".
- "Adaptive vehicle assistance restricted".
- "Adaptive vehicle assistance predictive regulation currently restricted".
After a few seconds, the driver assistance systems are available again.
Workshop findings:
The following DTC is stored in the control module for driver assist systems, J1121 (address word 00A5) intermittently:
- DTC C12D5FA (control unit for driver assist systems, picture processor does not respond) with symptom code 221281.
Technical Background
The diagnostic function is too sensitive.
Production Solution
This bulletin will be updated when more information is available. A solution is currently under development.
Service
- Delete the DTC C12D5FA and release the vehicle back to the customer.
- Explain to the customer that a solution is forthcoming for the 1st quarter of 2022 and that no repairs are necessary at this point. Do not replace any components for this condition since this will not resolve the customer's concern.
- Create a PSS record in the PSS application through the Pending Service Solutions (PSS) link in AccessAudi (under Related Links >> Service), or through the Technical Assistance page in Elsa.
Warranty
Claim Type:
- 110 up to 48 Months/50,000 Miles.
- G10 for CPO Covered Vehicles - Verify Owner.
- If the vehicle is outside any warranty, this Technical Service Bulletin is informational only.
Service Number:
9093
Additional Information
All part and service references provided in this TSB (2060332) 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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For more details, refer to the original service bulletin or contact an authorized Audi service center.
Original Source: ALLDATA Repair Link
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