Experiencing issues with your 2019 Ford F-150 key fob can be frustrating. You might be facing problems like the key fob not unlocking your doors, failing to remote start your truck, or even preventing the tailgate from opening. Before assuming the worst, let’s explore some potential culprits beyond just a dead battery in your 2019 Ford F-150 key fob.
One area to investigate is the Radio Transceiver Module (RTM). This module is responsible for receiving signals from your key fob and tire pressure monitoring system (TPMS) sensors. While a malfunctioning RTM could be the issue, it’s less common than other problems. To check the RTM, you would typically need to perform a module self-test using a diagnostic tool like FORScan to see if any Diagnostic Trouble Codes (DTCs) are present. However, if your door lock/unlock functions are still working from the fob, the RTM is likely functioning at least partially, making it a less probable cause. Ruling out low batteries in both of your key fobs is a good first step, but if problems persist, we need to look further.
A more likely scenario involves your Ford F-150’s keyless entry and Passive Anti-Theft System (PATS) antennae. These antennae are crucial for your key fob to communicate with your truck. The 2019 F-150 is equipped with Keyless Entry Antennae (KEA) located in each front door handle and the tailgate. These antennae detect your key fob’s proximity, enabling features like touch-sensing door unlocking and tailgate release. Separately, PATS antennae are positioned near the steering column, the key fob backup slot, and in the rear of the cab. These are vital for key recognition when starting your truck.
If none of these antennae are working correctly, your 2019 Ford F-150 key fob will appear unresponsive. The truck won’t sense the fob’s presence, leading to issues with keyless entry, remote start, and even starting the engine. The Body Control Module (BCM) manages these antennae. Therefore, a comprehensive DTC scan is essential to identify any codes that might indicate antenna malfunctions. This diagnostic step will help pinpoint whether the issue lies with the antennae themselves or the BCM controlling them, providing a clearer path to resolving your 2019 Ford F-150 key fob problems.
