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.
Backup Transceiver
The backup transceiver is located in the rear of the floor console and its associated backup transceiver slot is located in the floor console storage compartment. Make sure the transmitter buttons are facing forward and the key ring is up for the most efficient backup transceiver operation.
The backup transceiver can be used if the IA key battery fails or if the customer desires to keep the IA key out of sight. If the IA key battery fails, the passive start antennas cannot receive the IA key identification code and the vehicle experiences a PATS no-start. If the IA key is placed in the backup transceiver slot, the backup transceiver can read the key identification code and send it to the RFA module so the vehicle can be started. If the IA key is placed in the backup transceiver slot, the backup transceiver reads the IA key identification code and sends the data directly to the RFA module over hardwired circuits.
It is not recommended to leave the IA key in the backup transceiver slot as this decreases the security of the vehicle.
Whether the IA key identification code is read by the backup transceiver or by one of the passive start antennas, the RFA module validates the code, and if it is correct, sends a message to the PCM (OK-to-start) to ground the run/start relay solenoid coil and allow the fuel injectors to operate.
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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.