Experiencing a “Key Fob Not Detected” message in your 2017 Dodge Journey can be frustrating and prevent you from starting your vehicle. This issue, where your car fails to recognize the key fob despite a new battery, can stem from various causes. Let’s explore potential reasons and troubleshooting steps to get you back on the road.
One common initial step, as many owners try, is replacing the key fob battery. While a low battery can indeed cause detection problems, it’s not always the culprit. If you’ve already replaced the battery and the issue persists, the problem might lie elsewhere.
A seemingly obvious but crucial factor is the car battery itself. A weak or failing car battery can lead to numerous electrical issues, including key fob detection failure. The system might not be receiving enough power to properly recognize the key fob’s signal. While jump-starting might temporarily resolve the issue, it doesn’t address an underlying weak battery. If your car battery is old or showing signs of weakness, consider getting it tested and replaced.
Beyond batteries, the issue could involve the key fob itself. Although the buttons on your key fob might still lock and unlock the doors, the transponder chip inside, responsible for communicating with the car’s immobilizer system, could be faulty. This chip is essential for the car to recognize the key and allow ignition. Damage from drops, water exposure, or general wear and tear can compromise the transponder.
Another potential area to investigate is the Remote Frequency Hub (RF Hub) or Wireless Control Module (WCM). This module is the car’s receiver for the key fob signal. If the RF Hub/WCM is malfunctioning, it won’t be able to detect the key fob, regardless of the key fob’s functionality or battery status. Problems with this module can sometimes arise from electrical glitches or component failure.
Furthermore, interference can occasionally play a role. Strong radio frequencies or devices emitting similar signals could potentially interfere with the key fob’s signal, preventing the car from detecting it. While less common, it’s worth considering if the issue occurs consistently in specific locations.
Here are some troubleshooting steps you can try:
- Check the Car Battery Voltage: Use a multimeter to check your car battery’s voltage. A reading below 12.4 volts could indicate a weak battery.
- Try the Spare Key Fob: If you have a spare key fob, try using it. If the spare works, the original key fob is likely the problem.
- Key Fob Reprogramming: Sometimes, the key fob might need reprogramming to re-establish communication with the car. This often requires dealership or professional locksmith equipment.
- Inspect the Key Fob for Damage: Carefully examine your key fob for any signs of physical damage, especially if it has been dropped or exposed to moisture.
If these basic steps don’t resolve the “Key Fob Not Detected” issue on your 2017 Dodge Journey, it’s advisable to seek professional help. A qualified mechanic or dealership technician can diagnose the problem using specialized tools and determine if the issue lies with the key fob, RF Hub/WCM, immobilizer system, or another electrical component. Avoid forced attempts to start the car, as this could potentially lead to further complications. Addressing the problem promptly will help prevent more significant issues and ensure the reliable operation of your vehicle.
