Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSAUDI2012A4 SEDAN (8K2) L4-2.0L TURBO (CAEB)REPAIR AND DIAGNOSISDIAGRAMSELECTRICAL DIAGRAMSBODY CONTROL SYSTEMSCONVENIENCE SYSTEM, FROM SEPTEMBER 2007DIAGRAM 2/7 (TRACKS 71-84)
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)
Diagram 2/7 (Tracks 71-84)
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)SECTION Diagram 2/7 (Tracks 71-84)
IMPORTANT NOTE:
This manufacturer uses "Track" style wiring diagrams.
For information on how to use these diagrams effectively, please refer to Diagram Information and Instructions. Diagram Information and Instructions
Rear lid lock/alarm/central locking switch, Rear lid lock cylinder unlock button, Comfort system central control module, Rear lid central locking system motor, Left license plate lamp, Right license plate lamp
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = lilac
ge = yellow
or = orange
rs = pink
F124 - Rear lid lock/alarm/central locking switch
F248 - Rear lid lock cylinder unlock button
J393 - Comfort system central control module Overview of Control Modules in Rear part of vehicle - Sedan (4-door models)
T2g - Double connector
T17o - 17-pin connector Control Modules in Right Luggage Compartment
T32c - 32-pin connector Control Modules in Right Luggage Compartment
T32d - 32-pin connector Control Modules in Right Luggage Compartment
V53 - Rear lid central locking system motor Rear Lid
X4 - Left license plate lamp
X5 - Right license plate lamp
(51) - Ground connection in luggage compartment, right Overview of Ground Connections (4-door Models (Sedan))
(249) - Ground connection 2 (in interior wiring harness)
(372) - Ground connection 7 (in main wiring harness)
(B401) - Comfort system CAN bus high connection 5 (in main wiring harness)
(B410) - Comfort system CAN bus low connection 5 (in main wiring harness)
* - Sedan
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.