what to do if my Ford Explorer Fifth Generation (2011-2019) battery dies constantly

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 issues in Ford Explorer Fifth Generation (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 components.
•Wear safety glasses and gloves when handling the battery.

Symptoms

•Check engine light illuminated
•Difficulty starting the engine
•Dim or flickering dashboard lights
•Electrical accessories malfunctioning
•Rapid discharge of the battery (e.g., battery dies overnight)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Measure the battery voltage with a multimeter to determine if it is within the normal range (12.6 volts or higher when fully charged).
3
Inspect battery terminals for corrosion and ensure they are tightly connected.
4
Perform a load test on the battery to check its ability to hold a charge.
5
Check the alternator output voltage while the engine is running to confirm proper charging (should be between 13.7 to 14.7 volts).
6
Inspect for any signs of parasitic draw by removing the battery negative terminal and connecting an ammeter in series to measure current draw.

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
•Battery load tester
•Socket set
•Wire brush

Parts Required

•New battery (if necessary)
•Replacement alternator (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Measure the battery voltage with a multimeter to determine if it is within the normal range (12.6 volts or higher when fully charged).
3
Inspect battery terminals for corrosion and ensure they are tightly connected.
4
Perform a load test on the battery to check its ability to hold a charge.
5
Check the alternator output voltage while the engine is running to confirm proper charging (should be between 13.7 to 14.7 volts).
6
Inspect for any signs of parasitic draw by removing the battery negative terminal and connecting an ammeter in series to measure current draw.

Solution

1. Preparation

Gather necessary tools such as a multimeter, OBD-II scanner, and battery load tester.
Ensure the vehicle is parked on a flat surface, and the engine is off before starting repairs.

2. Battery Terminal Cleaning

Disconnect the negative terminal first, followed by the positive terminal.
Inspect the terminals and cables for corrosion; clean with a wire brush if necessary.
Reconnect the positive terminal first, followed by the negative terminal.

3. Battery Replacement (if needed)

If the battery fails the load test, remove it from the vehicle:
- Unscrew the battery hold-down bracket.
- Carefully lift the battery out of the tray (use gloves).
Install the new battery:
- Place the new battery in the tray, ensuring it is secured with the hold-down bracket.
- Connect the positive terminal first, followed by the negative terminal.

4. Alternator Inspection

Remove the alternator drive belt by loosening the tensioner pulley.
Inspect the alternator for physical damage or wear.
Test the alternator:
- Reconnect the drive belt and start the engine.
- Measure the output voltage at the battery with the engine running (should be 13.7 to 14.7 volts).
Replace the alternator if the output voltage is outside this range.

5. Parasitic Draw Repair (if applicable)

With the vehicle off, use the ammeter to check for current draw; normal draw should be under 50 mA.
If draw exceeds this, systematically remove fuses one at a time to locate the circuit causing the draw.
Repair or replace the faulty component or wiring as needed.