2020 Lincoln Aviator Body Control Module: Solving Electrical Gremlins & Programming Puzzles

Symptoms of a Failing Body Control Module

A faulty BCM in a 2020 Lincoln Aviator often creates bizarre and frustrating electrical issues. Because the module controls so many systems, symptoms can appear random and widespread. Owners have reported numerous electrical problems that can point toward a failing BCM.

• Widespread Electrical 'Gremlins': This is the most common sign. You may experience flickering interior lights, dashboard screens that go blank or freeze, or power windows and locks that work intermittently.
• Flurry of Dashboard Warning Lights: The instrument cluster may light up with multiple, unrelated error messages at once. Owners report seeing warnings like "Pre-Collision Assist Not Available," "Hill Start Assist Not Available," and "Service AdvanceTrac" appear simultaneously.
• Key Fob and Security System Issues: The vehicle may not recognize the key fob, or the anti-theft alarm may trigger for no reason. In some cases, this can lead to a no-start condition where the engine will not crank.
• Battery Drain (Parasitic Draw): A malfunctioning BCM can fail to go into 'sleep mode' after the car is turned off. This causes a slow drain on the battery, resulting in a dead battery overnight or after a few days of sitting.
🎬 Watch: How to diagnose a parasitic battery draw on Lincoln SUVs
• Malfunctioning Body Components: Specific features controlled by the BCM may fail entirely. This includes electronic door releases that trap passengers, a radio or infotainment screen that becomes unresponsive, or climate controls that stop working.
• Communication Error Codes: A scan tool may reveal Diagnostic Trouble Codes (DTCs) starting with 'U', which indicate a loss of communication between modules. A common code is U0140, which means "Lost Communication With Body Control Module."

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

While there are no recalls specifically for the 2020 Aviator's main Body Control Module, several recalls and TSBs address related electronic systems, highlighting the complexity and sensitivity of the vehicle's architecture.

• NHTSA Recall 24V368: Affects 2020-2024 Aviators where cell phone signals can interfere with the Accessory Protocol Image Module (APIM), causing the rearview camera image to flicker or distort. The fix involves adding electromagnetic shielding. While this isn't a BCM failure, its symptoms (screen issues) can be similar.
• NHTSA Recall 21V735 / 23V342: Related to software issues that could cause the rearview camera to fail to display an image.
• NHTSA Recall 19C06: Some early production 2020 Aviators left the factory in "Factory Mode," which disables warning chimes and gear display on the instrument cluster. This required a dealer visit to correct the software setting.
• Future Model Precedent (Recall 25V543): A recall for 2025 Aviator and Explorer models was issued for an improperly manufactured "Body Control Module C (BCMC)" that could cause trailer tail lights to fail. This indicates that BCMs on this platform can have manufacturing defects.

Buying a Used Body Control Module

Purchasing a used BCM for a 2020 Aviator is a viable way to save money, but it requires careful attention to detail due to the mandatory programming requirements. A used BCM will not work if you simply install it.

1. Match the Part Number Exactly

The most critical step is to match the OEM part number from your original BCM to the replacement unit. The part numbers provided in the initial data (e.g., 5U5T-14G371-PHA, LC5T-14G371-APG) are a starting point. The letters at the end often signify hardware and software revisions. Using a BCM with a different part number can lead to incompatibility and failed programming attempts.

2. Physical Inspection

When you receive the used module, inspect it carefully for signs of damage. Look for corrosion on the electrical pins, cracks in the plastic housing, or any indication of water intrusion. A module from a flood-damaged vehicle should be avoided at all costs.

3. Programming Options for a Used BCM

You have two main paths for making a used BCM work in your Aviator:

• Dealer/Specialist Programming: A Ford/Lincoln dealership or a qualified independent shop with the official Ford Diagnostic & Repair System (FDRS) software 🎬 See a walkthrough of the official Ford FDRS diagnostic software can perform a "Programmable Module Installation" (PMI). They will download your vehicle's "As-Built" data (the specific configuration for your VIN) and program it onto the used module. This also involves a security relearn for the anti-theft system (PATS).
• BCM Cloning Service: Several third-party services offer to "clone" your BCM. For this process, you ship both your original (faulty) BCM and the replacement (used) BCM to the company. They use specialized tools to read the data—including the VIN, key information, and programming—from your original module and write it directly onto the replacement. The returned module is then plug-and-play, requiring no further dealer programming. 🎬 Watch: How BCM cloning transfers immobilizer data for plug-and-play installation This is often a cost-effective and convenient option.

Cost to Replace a 2020 Lincoln Aviator BCM

Note: Prices are estimates and can vary based on location, supplier, and vehicle-specific requirements. Dealer programming fees can be significant.

Frequently Asked Questions (FAQ)