how to diagnose Ford Explorer Fifth Generation (2011-2019) electrical problems

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

561 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix electrical problems in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms and solutions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shock or short circuits.
•Allow components to cool down before handling, especially after prolonged use or testing.

Symptoms

•Check engine light illuminated
•Power windows or locks malfunctioning
•Dashboard warning lights flickering or not functioning
•Audio system not turning on or intermittent sound
•Headlights or taillights dim or not illuminating
•Battery drains quickly or fails to hold a charge

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the vehicle's battery for corrosion, loose connections, or low voltage.
3
Check fuses and relays related to the affected electrical systems for any blown fuses.
4
Perform a visual inspection of wiring harnesses for fraying, chafing, or damage.
5
Test electrical components (e.g., switches, motors) with a multimeter for proper function and continuity.
6
Verify ground connections for corrosion or loose fittings, ensuring a solid ground to the chassis.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Socket set
•Screwdrivers
•Wire strippers/crimpers

Parts Required

•Fuses (as needed)
•Battery (if faulty)
•Relays (if faulty)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the vehicle's battery for corrosion, loose connections, or low voltage.
3
Check fuses and relays related to the affected electrical systems for any blown fuses.
4
Perform a visual inspection of wiring harnesses for fraying, chafing, or damage.
5
Test electrical components (e.g., switches, motors) with a multimeter for proper function and continuity.
6
Verify ground connections for corrosion or loose fittings, ensuring a solid ground to the chassis.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to avoid electrical shock.
Ensure the vehicle is in a well-ventilated area.

2. Battery Inspection and Replacement

Sub-steps:
1. Remove the battery terminal connectors (negative first, then positive).
2. Inspect the battery for any physical damage or swelling.
3. Use a multimeter to check the battery voltage; it should read around 12.6 volts when fully charged.
4. If the battery is faulty, replace it with a new, compatible battery.
5. Reconnect the battery terminals (positive first, then negative).

3. Fuse and Relay Replacement

Sub-steps:
1. Locate the fuse box (typically under the dashboard or hood).
2. Use the fuse diagram to identify any blown fuses related to malfunctioning components.
3. Remove and replace any blown fuses with the correct amperage rating.
4. Inspect and replace any malfunctioning relays if necessary.

4. Wiring Repair

Sub-steps:
1. Trace the wiring harnesses associated with the affected systems.
2. Repair any damaged wires by soldering and insulating them or replacing the entire harness if necessary.
3. Secure the wiring to avoid future damage by using zip ties or clips.

5. Testing Electrical Components

Sub-steps:
1. Reconnect the battery and turn the ignition to the "on" position.
2. Use a multimeter to check the voltage at switches and motors to ensure they are receiving power.
3. Replace any malfunctioning switches or motors as needed.