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.
No Communication From A Control Module
The infotainment control module (ICM) knows which control modules are connected to the MOST network. If any control module on the MOST network ceases to communicate, a diagnostic trouble code (DTC) is stored in the infotainment control module (ICM). There is a diagnostic trouble code (DTC) for every control module on the MOST network for this fault.
Missing communication may be due to an internal fault in the control module or because the function is incorrectly implemented in the control module.
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.
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