How To Fix Full Accessory Power Active Ford Explorer

How to Fix a Full Accessory Power Active Ford Explorer

Is your Ford Explorer's Full Accessory Power (FAP) constantly active, draining your battery? This frustrating problem can leave you stranded, but don't worry! This guide will walk you through troubleshooting and potential fixes for this common issue. We'll cover the most likely culprits and offer practical solutions to get your Explorer back on the road.

Understanding Full Accessory Power (FAP)

Before diving into solutions, it's essential to understand what FAP is. Full Accessory Power is a feature in many Ford Explorers that allows certain accessories (like the radio, lights, or power outlets) to remain on even after you've turned off the ignition. While convenient, a malfunctioning FAP system can lead to a perpetually active state, resulting in a dead battery.

Common Causes of a Constantly Active FAP

Several issues can cause your Ford Explorer's FAP to stay active. Let's break them down:

1. Faulty Body Control Module (BCM)

The BCM is the brain of your vehicle's electrical system. A faulty BCM can misinterpret signals and keep the FAP active even when it shouldn't be. This is often the most significant culprit. A malfunctioning BCM can exhibit other symptoms, such as malfunctioning lights or power windows.

2. Issues with the Ignition Switch

The ignition switch plays a crucial role in controlling power to the vehicle's systems. A faulty ignition switch may not properly shut down power to the accessories, resulting in continuous FAP activity.

3. Problems with the GEM Module

The Generic Electronic Module (GEM) also controls various electrical components in your Ford Explorer. Similar to the BCM, a faulty GEM can lead to the FAP remaining active.

4. Wiring Problems

Damaged, frayed, or shorted wires within the vehicle's electrical system can create unintended connections and keep the FAP running. This is often difficult to pinpoint without thorough inspection.

Troubleshooting Steps: Diagnosing the Problem

Before attempting any repairs, it's crucial to systematically diagnose the problem. Here's a step-by-step approach:

1. Check Your Battery: Ensure your battery is in good condition and holds a sufficient charge. A weak battery might exacerbate the problem, making it seem like the FAP is the sole issue.

2. Disconnect the Battery: Disconnect the negative terminal of your battery to immediately stop any power drain. This is a crucial safety step.

3. Visual Inspection: Carefully examine the wiring harness for any signs of damage, fraying, or corrosion. Pay close attention to wiring near the ignition switch, BCM, and GEM.

4. Advanced Diagnostics (Professional Help): If the visual inspection doesn't reveal any obvious problems, you might need professional help. A mechanic can use a diagnostic scanner to pinpoint the specific issue related to the FAP, whether it's a faulty BCM, GEM, ignition switch, or wiring problem. They can also test individual components to confirm their functionality.

Potential Solutions: Repairing the Problem

The solutions will depend heavily on the root cause. Here are some possibilities:

• BCM Replacement: If the diagnostic test points to a faulty BCM, a replacement will be necessary. This requires professional expertise.

• Ignition Switch Replacement: A faulty ignition switch may require replacement. Again, this is best handled by a professional mechanic.

• GEM Module Replacement: A faulty GEM module also requires professional diagnosis and replacement.

• Wiring Repair: If you find damaged wiring, repair or replace the affected sections. This is often a complicated task and might require professional electrical expertise.

Preventing Future Problems

To prevent future instances of a persistently active FAP:

• Regular Maintenance: Schedule regular checkups to catch potential problems early.

• Battery Health: Maintain a healthy battery.

By following these steps and understanding the potential causes, you'll significantly increase your chances of resolving the full accessory power active issue in your Ford Explorer. Remember that diagnosing and repairing electrical problems can be complex, and professional help might be necessary. Don't hesitate to consult a qualified mechanic if you're unsure about any step.