The exact meaning can vary slightly depending on how the light behaves (flashes, stays on solid, etc.), but the core issue points to a malfunction within the PATS system preventing the car from recognizing the key. This means the car won't start.
Possible causes include:
* Faulty key fob: The battery in your key fob may be dead, or the transponder chip inside the key may be malfunctioning.
* PATS module malfunction: The electronic control unit that manages the PATS system itself could be faulty.
* Weak key signal: Something might be interfering with the signal between your key fob and the car's receiver.
* Wiring issues: A broken or damaged wire in the PATS system's circuitry.
* Security system activation: Sometimes the security system can unintentionally become engaged. Check for any other security-related lights or alarms.
You'll likely need to have a mechanic diagnose the exact problem, as it requires specialized tools and knowledge of the PATS system to pinpoint the cause. Trying to troubleshoot this yourself without the proper equipment could be problematic.
