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.
Low Frequency (LF) Antenna
| Refer to COMPONENT INDEX . |
There are five Low Frequency (LF) antennas located on this vehicle. These LF antennas allow the key fob within the RFH to communicate with a key fob that is located inside the vehicle or, at most, about 1.5 meters (5 feet) from the door handle touch point.
The LF antennas are located:
- Left Rear Door
- Right Rear Door
- Rear Cargo Floor
- Front Center Console
- Rear Bumper
The RFH uses communication through the LF antennas to wake up and challenge a key fob that is within range in order to authenticate whether that key fob is valid (programmed) to the vehicle.
The RFH communication with the key fob is on a 125 kilohertz using Amplitude-Shift Keying (ASK).
Each antenna unit has two dedicated connections to the RFH. One connection is the LF antenna output circuit, while the other connection Is the LF antenna return circuit. These circuits to each antenna unit are a twisted pair to help reduce the potential for induced electrical interference. The RFH continuously monitors all of the LF antenna units and will store a DTC for any fault that it detects.
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.