why is my Ford Explorer Fifth Generation (2011-2019) check charging system light on?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

489 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 the check charging system light on your Ford Explorer (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 shocks.
•Allow the engine to cool before working on components near the engine bay.

Symptoms

•Check charging system light illuminated on the dashboard
•Battery drains quickly or fails to hold a charge
•Dimming headlights or interior lights
•Engine may stall or have difficulty starting
•Unusual noises from the alternator (e.g., grinding or whining)
•Increased electrical issues (e.g., malfunctioning power windows or radio)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Inspect the battery terminals for corrosion or loose connections.
3
Check the battery voltage with a multimeter (should be around 12.6V when fully charged).
4
Test the alternator output while the engine is running (should be between 13.7V to 14.7V).
5
Examine the serpentine belt for wear or damage, ensuring it is tensioned properly.
6
Inspect wiring and connections in the charging system for any signs of damage or wear.

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
•Torque wrench
•Battery terminal cleaner
•Wire brush

Parts Required

•New battery (if needed)
•New alternator (if needed)
•New serpentine belt (if needed)

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Symptoms

•Check charging system light illuminated on the dashboard

•Battery drains quickly or fails to hold a charge

•Dimming headlights or interior lights

•Engine may stall or have difficulty starting

•Unusual noises from the alternator (e.g., grinding or whining)

•Increased electrical issues (e.g., malfunctioning power windows or radio)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Inspect the battery terminals for corrosion or loose connections.
3
Check the battery voltage with a multimeter (should be around 12.6V when fully charged).
4
Test the alternator output while the engine is running (should be between 13.7V to 14.7V).
5
Examine the serpentine belt for wear or damage, ensuring it is tensioned properly.
6
Inspect wiring and connections in the charging system for any signs of damage or wear.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Safety gear: gloves and goggles.
Disconnect the negative battery terminal to prevent electrical shock.

2. Battery Inspection and Replacement

Sub-steps:
1. Inspect the battery for bulging or leaks; replace if damaged.
2. Clean battery terminals using a wire brush and a baking soda solution to remove corrosion.
3. If necessary, replace the battery with a new one that meets OEM specifications.

3. Alternator Inspection and Replacement

Sub-steps:
1. Remove the serpentine belt by loosening the tensioner pulley with a socket wrench.
2. Disconnect the electrical connections from the alternator (note the wiring layout).
3. Remove the mounting bolts securing the alternator and take it out.
4. Install the new alternator by reversing the removal steps, ensuring all connections are secure.

4. Serpentine Belt Inspection and Replacement

Sub-steps:
1. Inspect the serpentine belt for cracks, fraying, or signs of wear; replace if necessary.
2. Install the new serpentine belt by routing it according to the belt routing diagram found under the hood.
3. Ensure proper tension is applied to the belt using the tensioner.

5. Final Checks

Sub-steps:
1. Reconnect the negative battery terminal.
2. Start the vehicle and check for the charging system light; it should remain off.
3. Monitor the voltage at the battery with the engine running to ensure it stays within the correct range.

Tools Required:

OBD-II scanner
Multimeter
Socket set
Torque wrench
Battery terminal cleaner
Wire brush

Parts Required:

New battery (if needed)
New alternator (if needed)
New serpentine belt (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems to prevent shocks.
Allow the engine to cool before working on components near the engine bay.