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.
General Information
Mobile Online Services are only available with a Radio/RNS -RX1-.
For vehicles with a telephone, the telephone function is integrated in the Control Module for Emergency Call Module and Communication Unit -J949-.
When there are concerns about the function, it necessary to be familiar with the Mobile Online Services functions.
Refer to the appropriate service/repair/system information for additional information.
The connection to other vehicle systems is established through the CAN bus (Infotainment) and the Data Bus on Board Diagnostic Interface -J533-.
Fault Finding is performed using the Guided Fault Finding . Refer to Vehicle Diagnostic Tester.
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.