why does my Ford Explorer Fifth Generation (2011-2019) battery keep dying

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

590 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 battery drain issues in 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

•Always disconnect the battery before working on electrical components.
•Wear gloves and safety goggles when handling batteries and electrical systems.

Symptoms

•Battery warning light illuminated on the dashboard
•Difficulty starting the vehicle, especially in cold weather
•Electrical accessories (lights, radio) not functioning properly
•Battery frequently requires jump-starting
•Unusual or increased parasitic draw when the vehicle is off

Diagnostic Steps

1
Use an OBD-II scanner to check for any stored error codes related to the electrical system.
2
Test the battery voltage with a multimeter; a healthy battery should read around 12.6 volts when fully charged.
3
Inspect battery terminals and connections for corrosion or looseness.
4
Check the alternator output; it should typically be between 13.7 to 14.7 volts when the engine is running.
5
Perform a parasitic draw test to measure current draw when the vehicle is off, ensuring it is below 50 milliamps.
6
Verify the condition of electrical components such as the starter, ignition system, and fuses.

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
•Wire brush
•Battery terminal cleaner

Parts Required

•New car battery (if replacement is needed)
•Alternator (if replacement is needed)
•Battery terminal connectors (if corroded)

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Diagnostic Steps

1
Use an OBD-II scanner to check for any stored error codes related to the electrical system.
2
Test the battery voltage with a multimeter; a healthy battery should read around 12.6 volts when fully charged.
3
Inspect battery terminals and connections for corrosion or looseness.
4
Check the alternator output; it should typically be between 13.7 to 14.7 volts when the engine is running.
5
Perform a parasitic draw test to measure current draw when the vehicle is off, ensuring it is below 50 milliamps.
6
Verify the condition of electrical components such as the starter, ignition system, and fuses.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a safe area and the engine is turned off.
Disconnect the negative terminal of the battery to prevent any electrical shorts.

2. Battery Inspection and Replacement

Inspect Battery Condition
- Check for physical damage or swelling.
- Clean battery terminals using a wire brush and a solution of baking soda and water.
Replace Battery (if necessary)
- Remove the battery hold-down bracket using a socket set.
- Carefully lift the battery out of the tray.
- Place the new battery in the tray, ensuring it is secured properly.
- Reattach the hold-down bracket and tighten to manufacturer specifications.

3. Alternator Testing and Replacement

Test Alternator Output
- Reconnect the battery and start the vehicle.
- Use a multimeter to check the voltage at the battery terminals.
- If the output is below 13.7 volts, consider replacing the alternator.
Replace Alternator (if necessary)
- Disconnect battery negative terminal.
- Remove any covers or brackets obstructing access to the alternator.
- Disconnect electrical connectors and remove the serpentine belt.
- Unbolt the alternator from its mounting bracket and remove it.
- Install the new alternator in reverse order, ensuring all connections are secure.

4. Parasitic Draw Resolution

Identify and Resolve Parasitic Draw
- If a parasitic draw is identified, systematically remove fuses to isolate the circuit causing the excessive draw.
- Inspect components on the affected circuit for faults or malfunctions and replace as needed.