how to fix the rear window defrost in Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

516 words

Problem Statement

Learn how to diagnose and fix rear window defrost issues in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery if working on electrical components to avoid shorts.

Symptoms

•Rear window defrost indicator light does not illuminate
•Rear window remains foggy or icy despite defrost operation
•Intermittent or weak defrosting action
•No audible click or noise when activating the defrost switch
•Check for any associated warning lights on the dashboard

Diagnostic Steps

1
Inspect the rear window defrost grid visually for any visible damage or breaks.
2
Check the fuses related to the rear defrost system using the vehicle's fuse box diagram.
3
Use a multimeter to test for continuity across the rear window defrost grid.
4
Verify operation of the rear defrost switch by checking its electrical connections.
5
Scan the vehicle's computer for any error codes related to the heating system.

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

•Multimeter
•Trim removal tool
•Screwdriver set
•Rear window defrost repair kit
•Fuse puller (optional)

Parts Required

•Replacement fuse (if damaged)
•Rear window defrost repair kit (if grid is damaged)

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Diagnostic Steps

1
Inspect the rear window defrost grid visually for any visible damage or breaks.
2
Check the fuses related to the rear defrost system using the vehicle's fuse box diagram.
3
Use a multimeter to test for continuity across the rear window defrost grid.
4
Verify operation of the rear defrost switch by checking its electrical connections.
5
Scan the vehicle's computer for any error codes related to the heating system.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the ignition is off.

2. Inspect and Repair the Defrost Grid

Sub-steps:
1. Clean the rear window surface with a non-abrasive cleaner to ensure visibility of the defrost grid.
2. If breaks are found in the grid, use a rear window defrost repair kit to restore the conductive traces.
3. Follow the kit instructions for application and curing time.

3. Check and Replace Fuses

Sub-steps:
1. Locate the fuse box, typically found beneath the instrument panel or under the hood.
2. Remove the fuse associated with the rear defrost (refer to the owner's manual for the correct fuse number).
3. Inspect the fuse and replace it if blown with the same amperage rating.

4. Test the Rear Defrost Switch

Sub-steps:
1. Remove the panel covering the switch using a trim removal tool.
2. Disconnect the electrical connector from the rear defrost switch.
3. Use a multimeter to check for voltage at the connector when the switch is activated; repair or replace the switch if no voltage is detected.

5. Reassemble and Test

Sub-steps:
1. Reattach any panels or covers removed during the repair.
2. Start the vehicle and activate the rear defrost to ensure proper operation.
3. Monitor the rear window for effective defrosting.