NHTSA ID Number: 11016535
Manufacturer Communication Number: TSB_2076397_2
TSB/Document Date: 2025-04-04
Summary
This bulletin provides information when various driver assistance systems are unavailable.
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Technical Service Bulletin
Topic 90 Driver assist systems: various assist systems unavailable (DTC C12B3FA, C12D5FA)
Market area United States 444 Volkswagen of America, Inc. (6444)
Brand Audi
Transaction No. |2076397/2
Level EH
Status Released for publishing
Release date Mar 18, 2025
Diagnostic trouble codes
Diagnostic address Diagnostic trouble code Fault Storage
symptom state
00AS5 - Front sensor for driver |C12B3FA: Driver Assistance Systems Front Camera “
. ae Intermittent
assistance systems Communication errors
00AS5 - Front sensor for driver |C12D5FA: Driver Assistance Systems Control Module Intermittent
assistance systems Image processing processor not reacting
New customer code
Object of complaint
Complaint type
lighting, signaling -> operation, comfort lighting -> automatic headlamp
control -> high beam automatic headlamp control
functionality -> does not
switch on/connect
lighting, signaling -> operation, comfort lighting -> automatic headlamp
control -> high beam automatic headlamp control
functionality -> does not
switch off/disconnect
lighting, signaling -> operation, comfort lighting -> headlamp range control
system -> automatic headlamp range control
functionality -> operation
sequence incorrect
lighting, signaling -> operation, comfort lighting -> headlamp range control
system -> headlamp range control
functionality -> operation
sequence incorrect
lighting, signaling -> operation, comfort lighting -> cornering lamp
functionality -> no function
lighting, signaling -> operation, comfort lighting -> automatic headlamp
control -> high beam automatic headlamp control
functionality -> no function
lighting, signaling -> operation, comfort lighting -> cornering lamp
functionality -> partially out
of order
lighting, signaling -> operation, comfort lighting -> cornering lamp
functionality -> operation
sequence incorrect
information, navigation, communication, entertainment -> information
display symbols -> bulb failure information display
functionality -> activates
information, navigation, communication, entertainment -> information
display symbols -> bulb failure information display
functionality -> activates
without cause
information, navigation, communication, entertainment -> indicator display
symbols -> high beam indicator display
functionality -> activates
without cause
information, navigation, communication, entertainment -> indicator display
symbols -> cornering light indicator display
functionality -> activates
without cause
Object of complaint
Complaint type
Position
information, navigation, communication, entertainment -> driver information
system (DIS, MFI, MMI) -> traffic sign detection display
control modules, services ->
error message
assistance systems, comfort controls -> cruise control\distance regulation -
> adaptive cruise control system
functionality -> no function
assistance systems, comfort controls -> cruise control\distance regulation -
> adaptive cruise control system
functionality -> does not
switch on/connect
assistance systems, comfort controls -> cruise control\distance regulation -
> adaptive cruise control system
functionality -> cannot be
selected
lighting, signaling -> operation, comfort lighting -> cornering lamp ->
dynamic curve light
functionality -> no function
information, navigation, communication, entertainment -> malfunction
display symbols -> cruise control system (ADR, ACC) malfunction display
functionality -> activates
information, navigation, communication, entertainment -> malfunction
display symbols -> exterior lighting malfunction indicator
functionality -> activates
information, navigation, communication, entertainment -> malfunction
display symbols -> exterior lighting malfunction indicator
functionality -> activates
without cause
information, navigation, communication, entertainment -> indicator display
symbols -> adaptive distance regulation (ADR) indicator display
functionality -> activates
without cause
information, navigation, communication, entertainment -> indicator display
symbols -> distance regulation indicator display (ACC)
functionality -> activates
without cause
information, navigation, communication, entertainment -> indicator display
symbols -> adaptive cruise assist indicator display
functionality -> activates
without cause
information, navigation, communication, entertainment -> indicator display
symbols -> predictive efficiency assist indicator
functionality -> activates
without cause
Vehicle data
Audi Q7
Sales types
Type |MY |Brand| Designation |Engine code | Gearbox code] Final drive code
4MG*|2021]A * * *
4MG*|2022/A * * *
4MG*|2023]A * * *
4MQ*|2024|A * * *
4MQ*|2025/A * * *
Chassis numbers
Manufacturer | Filler| Type|Filler)| MY|Factory|From |To Prod from|Prod to
WA1 * F7 |* M |D 000001 |999999
WA1 * F7 |* N |D 000001 |999999
WA1 * F7 |* P |D 000001 |999999
WA1 * F7 |* R |D 000001 |999999
WA1 * F7 |* s |D 000001 |018717
Documents
Document name
master.xml
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Technical Service Bulletin Transaction No.: 2076397/2
90 Driver assist systems: various assist systems unavailable (DTC C12B3FA, Release date: Mar 18, 2025
C12D5FA) . ,
Condition
REVISION HISTORY
Revision |Date Purpose
2 - Revised header (Added Model Years 24 & 25)
Revised header (Added vin filter per TSB criteria)
Revised Production Solution (Added VIN break)
1 12/17/2024 | Initial publication
Customer states:
The driver assist systems are unavailable or there is a message regarding this displayed on the instrument cluster:
+ “Audi
adaptive light: system fault”.
+ “Audi pre sense: system fault”.
+ “Adaptive cruise assist: restricted”.
+ | “Adaptive cruise assist: predictive control currently restricted”.
Workshop findings:
Either only the first DTC entry below is stored alone, or together with the second DTC in the driver assist systems
control module -J1121- (address word 00A5):
+ DTC C12B3FA: Driver Assistance Systems Front Camera — communication error (symptom number 221189)
(sporadic).
+ DTC C12D5FA: Driver Assistance Systems Control Module, image processing processor does not respond
(symptom number 221281).
Technical Background
Not applicable.
Production Solution
From Vehicle Identification number ******F7*SD018717 with build date 10/22/2024.
Service
If the complaint occurs, install the data wire with part number 4M0 971 327 between front camera for driver assist
systems (R242) and driver assist systems control unit (J1121).
Warranty
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TSB/Document ID: TSB_2076397_2
Replacement Service Bulletin Number:
MFR Communication Date: 2025-03-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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