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Home >> Audi >> 2025 >> Q4 e-tron Prestige >> Repair and Diagnosis >> Quick Lookups >> Wiring Diagrams >> OEM Wiring Diagrams Access And Start Authorization , (4K5),(4K6),(4K7) >> OEM Wiring Diagrams Access And Start Authorization, (4K5),(4K6),(4K7) >> Access/Start Authorization Control Module, Vehicle Electrical System Control Module, Data Bus On Board Diagnostic Interface

Access/Start Authorization Control Module, Vehicle Electrical System Control Module, Data Bus On Board Diagnostic Interface

GWWF4B-074040424Courtesy of AUDI OF AMERICA, LLC

J518 

Access/Start Authorization Control Module

J519 

Vehicle Electrical System Control Module

J533 

Data Bus on Board Diagnostic Interface

T40a 

40-Pin Connector, Black

T73a 

73-Pin Connector, Black

B397 

Comfort System CAN Bus, High Connection 1 (in Main Wiring Harness)

B402 

Comfort System CAN Bus, High Connection 6 (in Main Wiring Harness)

B406 

Comfort System CAN Bus, Low Connection 1 (in Main Wiring Harness)

B411 

Comfort System CAN Bus, Low Connection 6 (in Main Wiring Harness)

B950 

Connection 1 (CAN Bus Connectivity High) in Main Wiring Harness

B955 

Connection 1 (CAN Bus Connectivity Low) in Main Wiring Harness

Refer to Applicable Wiring Diagram for Data Bus Networking

*2 

Through June 2024

*3 

For Vehicles with UNECE Cyber Security

*4 

From June 2024

*5 

Refer to Applicable Wiring Diagram for Fuses in Vehicle Interior