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 -J949-, REMOVING AND INSTALLING: Installing
Installation is performed in the reverse order of removal, noting the following.
-- If the Control Module for Emergency Call Module and Communication Unit -J949- is being replaced, then pay attention to the further procedure for replacing the control modules. Refer to Control Module for Emergency Call Module and Communication Unit -J949-, REPLACING .
Use the Manual With the Right Hardware
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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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