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.
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HOMESERVICE MANUALSAUDI2012A4 SEDAN (8K2) L4-2.0L TURBO (CAEB)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULESERVICE AND REPAIR
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)
Body Control Module: Service and Repair
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)SECTION Service and Repair
Comfort System Central Control Module (J393)
- If the control module was replaced, select the "Replace" function for the respective control module in "Guided Fault Finding" or "Guided Functions" using the Vehicle Diagnostic Tester.
Removing
- Open the luggage compartment right side trim.
- Release the retaining clips - arrows - and remove the comfort system central control module (J393) - item 7 - from the retaining frame.
- Carefully disconnect the connector - 4 - and - 6 - and the antenna connector - 3 -.
- Disconnect the connectors - 1, 2 and 5 -.
- To disconnect electrical connector, press catch - 1 -, turn retaining bracket in - direction of arrow - and remove connector.
- Remove the comfort system central control module.
Installing
Install in reverse order.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.