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

547 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 battery before working on electrical systems to prevent shorts.
•Allow the engine to cool before inspecting or working on electrical components.

Symptoms

•Check engine light illuminated
•Inoperative dashboard lights
•Power windows and locks malfunctioning
•Unresponsive infotainment system
•Battery draining quickly or frequently
•Intermittent starting issues

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the vehicle's battery and connections for corrosion or loose terminals.
3
Check fuses related to the affected electrical systems using a fuse tester.
4
Measure the battery voltage with a multimeter to ensure it is within the normal range (12.4-12.7 volts).
5
Test the alternator output while the engine is running to confirm it is charging properly (13.7-14.7 volts).
6
Examine wiring harnesses for any visible damage or wear, particularly in high-use areas.

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
•Fuse tester
•Wire brush
•Basic hand tools (socket set, screwdrivers)

Parts Required

•Replacement fuses (various amperages)
•Wiring connectors (if repairs are needed)
•New battery (if testing indicates failure)

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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 and connections for corrosion or loose terminals.
3
Check fuses related to the affected electrical systems using a fuse tester.
4
Measure the battery voltage with a multimeter to ensure it is within the normal range (12.4-12.7 volts).
5
Test the alternator output while the engine is running to confirm it is charging properly (13.7-14.7 volts).
6
Examine wiring harnesses for any visible damage or wear, particularly in high-use areas.

Solution

1. Preparation

Gather necessary tools and replacement parts.
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Battery and Connections Inspection

Visually inspect the battery for any signs of corrosion or damage.
Clean any corrosion off the terminals using a wire brush and a mixture of baking soda and water.
Tighten any loose connections to ensure a secure fit.

3. Fuse Inspection and Replacement

Locate the fuse box and remove the cover.
Use a fuse tester to check fuses related to the affected systems.
Replace any blown fuses with the correct amperage rating (refer to the owner’s manual for specifications).

4. Wiring Inspection

Carefully inspect the wiring harnesses for frayed wires, pinched areas, or broken connectors.
If damage is found, repair or replace the affected wiring sections using appropriate gauge wire and connectors.

5. Alternator and Battery Testing

Reconnect the battery and start the engine.
Use a multimeter to measure the voltage at the battery terminals while the engine is running.
If the voltage is below 13.7 volts, the alternator may need to be replaced.

6. Final Checks

Once all components are inspected and repaired, reconnect the battery and clear any error codes using the OBD-II scanner.
Test all affected electrical systems to ensure proper operation.