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 MANUALSAUDI2012A8 QUATTRO SEDAN (4H2) V8-4.2L (CDRA)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULESERVICE AND REPAIRCONTROL MODULE FRAME
2012 Audi A8 Quattro Sedan (4H2) V8-4.2L (CDRA)
Control Module Frame
2012 Audi A8 Quattro Sedan (4H2) V8-4.2L (CDRA)SECTION Control Module Frame
Control Module Frame
Removing
- Remove the luggage compartment rear trim panel..
- Disconnect the connectors - 1 - and - 3 -.
- Carefully pull the fuse - 8 - and disconnect the antenna connector - 7 -.
- Disconnect the connectors - 2, 5 and 6 -.
• Ignore - item 4 - and - arrows -.
- To disconnect electrical connector, press catch - 1 -, turn retaining bracket in - direction of arrow - and remove connector.
- Remove the nut - 4 - and screws - 1 - and - 2 -.
- Remove the bracket - 3 - for the cooler.
- Release the spring - arrow - and remove the control module - 1 - with the wires - 2, 3 and 4 - still connected.
- Release the spring - arrow - and remove the Headlamp range control module (J431) - 1 - from the frame with the wire - 2 - still connected.
- Free up the wiring harness - 2 -.
- Remove the nuts - 1 -.
- Open the tabs - 4 - and remove the frame - 3 - from fuse panel F toward the rear.
Installing
• Tightening specification. Refer to => [ Relay/Fuse Carrier and Control Modules in Luggage Compartment Overview ] Relay/Fuse Carrier and Control Modules in Luggage Compartment Overview.
Install in reverse order of removal. Note the following:
- Install the headlamp range control module. Refer to=> [ Headlamp Range Control Module (J431) ] Headlamp Range Control Module (J431).
- Install Comfort system central control module 2 (J773). Refer to => [ Comfort System Central Control Module 2 (J773) ] Comfort System Central Control Module 2 (J773).
- Install the bracket for the cooler.
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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.