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.
Vehicle Electrical System Control Module, Control Module For Emergency Call Module And Communication Unit, Front Roof Module
E276
Emergency Call Button
J519
Vehicle Electrical System Control Module
J528
Roof Electronics Control Module
J949
Control Module for Emergency Call Module and Communication Unit
L76
Push Button Illumination Bulb
R38
Telephone Microphone
T26c
26-Pin Connector, Black
T36a
36-Pin Connector, Black
T73a
73-Pin Connector, Black
WX3
Front Roof Module
B952
Connection 3 (CAN Bus Connectivity High) in Main Wiring Harness
B957
Connection 3 (CAN Bus Connectivity Low) in Main Wiring Harness
*
Refer to Applicable Wiring Diagram for Interior Lamps
*2
Refer to the Applicable Interior Rearview Mirror Wiring Diagram
*3
Refer to Applicable Wiring Diagram for Fuses in Vehicle Interior
*4
For Vehicles with Emergency Call Function
*5
Audio Bus Data Bus Wire
*6
The Color of the Wires Depends on Vehicle Equipment
*7
Through June 2024
*8
From June 2024
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.