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.
Control Module For Emergency Call Module And Communication Unit, Microphone Unit In Front Roof Module, Emergency Call Module Speaker
J525
Digital Sound System Control Module
J794
Information Electronics Control Module 1
J949
Control Module for Emergency Call Module and Communication Unit
R140
Left Front Microphone
R141
Right Front Microphone
R164
Microphone Unit in Front Roof Module
R335
Emergency Call Module Speaker
T2ey
2-Pin Connector, White
T2ez
2-Pin Connector, Black
T4ct
4-Pin Connector, Gray
T4cu
4-Pin Connector, Blue
T12ax
12-Pin Connector, Blue
T12ay
12-Pin Connector, Green
T17e
17-Pin Connector, Black
T17j
17-Pin Connector, Black
T20i
20-Pin Connector, Naturally Cloudy
T38a
38-Pin Connector, Black
TCPM
Coupling Point on Instrument Panel, Center
*
Refer to Applicable MMI (Information Electronics) Wiring Diagram
*2
Refer to Applicable Sound System Wiring Diagram
*3
For Vehicles Without an Amplifier
*4
Audio Bus Data Bus Wire
*5
Not for Vehicles with Russia Equipment
*6
For Vehicles with Russia Equipment
*7
For Vehicles with an Amplifier
*8
Depending on Equipment
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.