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.
Digital Sound System Control Module, Information Electronics Control Module 1, Control Module For Emergency Call Module And Communication Unit, Subwoofer
J525
Digital Sound System Control Module
J794
Information Electronics Control Module 1
J949
Control Module for Emergency Call Module and Communication Unit
R211
Subwoofer
R298
Dual Subwoofer Speaker 1
R299
Dual Subwoofer Speaker 2
SG
Fuse Panel G
SG2
Fuse 2 on Fuse Panel G
T4lr
4-Pin Connector, Black
T8ag
8-Pin Connector, Black
T12c
12-Pin Connector, Green
T20c
20-Pin Connector, Naturally Cloudy
T38c
38-Pin Connector, Black
687
Ground Connection 1 on Center Tunnel
*
Refer to Applicable Communication Wiring Diagram
*2
Refer to Applicable MMI (Information Electronics) Wiring Diagram
*3
Refer to Applicable Wiring Diagram for Fuse Positions
*4
Audio Bus Data Bus Wire
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.