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.
Visual Inspection
The Remote Function Actuation (RFA) system does not have an indicator lamp or a specific message to indicate a malfunction. When the RFA system indicates a malfunction, the receiver sends a message through the serial data line to the Instrument Panel Cluster (IPC) to display SERVICE TIRE WARN SYS message on the Driver's Information Center (DIC). Further diagnosis of the RFA system is done through reading the DTCs or through the use of a scan tool.
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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.