how to fix a Ford Explorer Fifth Generation (2011-2019) that won't go into 4WD

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

594 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 4WD engagement 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

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting the transfer case to prevent burns.

Symptoms

•4WD indicator light does not illuminate when selected
•Vehicle remains in 2WD mode despite 4WD selection
•Grinding or clicking noises when attempting to engage 4WD
•Unresponsive 4WD switch or control panel
•Check engine light illuminated (related to 4WD system)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect the 4WD control switch for physical damage or malfunction.
3
Check the vehicle's fuse box for blown fuses related to the 4WD system.
4
Examine the transfer case fluid level and condition.
5
Test the 4WD actuator motor for proper operation.
6
Inspect wiring and connectors for corrosion or loose connections.

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
•Fuse puller or needle-nose pliers
•Torx screwdriver
•Socket set
•Multimeter
•Fluid pump

Parts Required

•Replacement fuses (as needed)
•4WD control switch (if faulty)
•Transfer case fluid
•4WD actuator motor (if faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect the 4WD control switch for physical damage or malfunction.
3
Check the vehicle's fuse box for blown fuses related to the 4WD system.
4
Examine the transfer case fluid level and condition.
5
Test the 4WD actuator motor for proper operation.
6
Inspect wiring and connectors for corrosion or loose connections.

Solution

1. Preparation

Gather required tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the battery to ensure safety during electrical work.

2. Inspect and Replace Fuses

Tools Required: Fuse puller or needle-nose pliers
Locate the fuse box and identify the fuses associated with the 4WD system.
Inspect each fuse for continuity; replace any blown fuses with the correct amperage as specified in the owner's manual.

3. Check the 4WD Control Switch

Tools Required: Torx screwdriver
Remove the trim panel around the 4WD control switch.
Disconnect the wiring harness from the switch.
Use a multimeter to test for continuity across the switch terminals. Replace the switch if it fails the test.

4. Inspect the Transfer Case Fluid

Tools Required: Socket set, fluid pump
Remove the drain plug from the transfer case and inspect the fluid for contamination.
If the fluid is low or dirty, drain the old fluid and refill with the specified transfer case fluid (refer to the owner's manual for type and quantity).

5. Test the 4WD Actuator Motor

Tools Required: Multimeter, socket set
Locate the actuator motor on the transfer case.
Disconnect the motor and test for proper voltage using a multimeter while attempting to engage the 4WD.
If no voltage is present, inspect wiring. If voltage is present but the motor does not operate, replace the actuator motor.

6. Reassemble and Reconnect Battery

After completing the necessary repairs, reattach any disconnected components.
Reconnect the battery and restore power to the vehicle.