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, Roof Antenna
J525
Digital Sound System Control Module
J794
Information Electronics Control Module 1
J949
Control Module for Emergency Call Module and Communication Unit
RX5
Roof Antenna
R50
GPS Antenna
R263
Emergency Call Module Antenna
T2ev
2-Pin Connector, Blue
T2gr
2-Pin Connector, Purple
T4ch
4-Pin Connector, Pink
T12k
12-Pin Connector, Blue
T12l
12-Pin Connector, Green
T36a
36-Pin Connector, Black
T38a
38-Pin Connector, Black
478
Ground Connection 3 (in Rear Lid Wiring Harness)
*
Refer to Applicable Sound System Wiring Diagram
*2
Refer to Applicable MMI (Information Electronics) Wiring Diagram
*3
For Vehicles with Mobile Online Services
*4
From June 2023
*5
For Vehicles with an Amplifier
*6
Audio Bus Data Bus Wire
*7
Through June 2023
*8
For Vehicles Without an Amplifier
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.