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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

589 words

Problem Statement

Learn how to diagnose and fix electrical problems in your Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

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 avoid short circuits and personal injury.
•Allow any components to cool before handling if the vehicle has been running.

Symptoms

•Dashboard warning lights illuminated
•Power windows not operating
•Radio or infotainment system malfunctioning
•Headlights dim or flickering
•Battery drain when the vehicle is off
•Non-functioning power locks

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 in the fuse box for any blown fuses that may affect electrical components.
4
Use a multimeter to measure voltage at the battery terminals and ensure it meets manufacturer specifications (typically around 12.6 volts).
5
Inspect wiring harnesses and connectors for signs of wear, damage, or loose connections.
6
Perform a parasitic draw test to check for excessive current draw when the vehicle is off.

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 puller
•Basic hand tools

Parts Required

•Replacement fuses
•Electrical tape
•Wiring harness (if damaged)

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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 in the fuse box for any blown fuses that may affect electrical components.
4
Use a multimeter to measure voltage at the battery terminals and ensure it meets manufacturer specifications (typically around 12.6 volts).
5
Inspect wiring harnesses and connectors for signs of wear, damage, or loose connections.
6
Perform a parasitic draw test to check for excessive current draw when the vehicle is off.

Solution

1. Preparation

Gather tools and materials: OBD-II scanner, multimeter, fuse puller, and basic hand tools.
Disconnect the battery negative terminal to ensure safety while working on electrical components.

2. Inspect and Clean Battery Connections

Remove the battery terminals (negative first, then positive).
Clean the terminals and battery posts using a wire brush to remove corrosion.
Reconnect the terminals securely (positive first, then negative).

3. Check and Replace Fuses

Open the fuse box and locate the relevant fuses for the electrical components that are malfunctioning.
Use a fuse puller to remove the fuses and inspect them visually for breaks or discoloration.
Replace any blown fuses with the correct amperage rating.

4. Test Voltage and Ground Connections

Reconnect the battery and use a multimeter to check the voltage at the battery terminals again.
Check for ground connections by probing ground points with the multimeter; ensure they have continuity with the negative battery terminal.

5. Repair or Replace Damaged Wiring

Inspect wiring harnesses for visible damage, fraying, or exposed wires.
If damage is found, either repair the wiring using solder and heat shrink tubing or replace the affected harness segment.

6. Conduct Parasitic Draw Test

With the battery reconnected, set the multimeter to measure current and place it in series with the battery negative terminal.
Allow the vehicle to enter sleep mode (usually takes a few minutes) and monitor the current draw; it should be below 50 milliamps.
If the draw is excessive, isolate circuits to identify the source.