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.
Radio Frequency Hub (RFH) Module
2023 Jeep Compass AltitudeSECTION Radio Frequency Hub (RFH) Module
RADIO FREQUENCY HUB (RFH) MODULE
| Refer to COMPONENT INDEX . |
The RFH:
- Receives the input request to start from the ignition
- Energizes the key transponder in the key fob in order to read it
- Sends a random code to the transponder and in return, receives a minikrypt code from the transponder
- Validates the key fob using LF antennas
- Receives and validates transmission in park via Shift Lock switch (remote start use only)
- Validates that the brake is engaged
- Sends a request to the BCM to change the ignition state
RENDER: 1.0x
NO RELATED
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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.