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.
Hands-Free Phone
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbags, airbag curtains, knee blocker, seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect the Intelligent Battery Sensor (IBS)/negative battery cable assembly from the negative battery post, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
The hardwired circuits between components related to the Radio Receiver Module (RRM) and the Uconnect® Hands-Free Phone system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, wire harness routing and retention, connector pin-out information, and location views for the various wire harness connectors, splices, and grounds. For proper wire repair, and connector repair procedures. Refer to CIRCUIT TESTING PROCEDURES and CONNECTOR TERMINAL REMOVAL and CONNECTOR TERMINAL INSTALLATION .
However, conventional diagnostic methods will not prove conclusive in diagnosing the RRM or the electronic controls and communication between modules and other devices that provide some features of the Uconnect® Hands-Free Phone system. The most reliable, efficient, and accurate means to diagnose the RRM or the electronic controls and communication related to Uconnect® Hands-Free Phone system operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
The MIT019 Multi-Media Interface Tester special tool may also be used for testing where no Diagnostic Trouble Code (DTC) has been recorded, such as with Bluetooth® reception and phone pairing issues Refer to AUDIO/VIDEO, NON-DTC BASED DIAGNOSTICS .
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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.