why do the wipers on my Ford Explorer only work on high speed

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

475 words

Problem Statement

Learn how to diagnose and fix windshield wipers that only work on high speed in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shocks or short circuits.

Symptoms

•Wipers only operate on high speed
•Wipers do not function in low or intermittent settings
•Possible noise or grinding sound when wipers are engaged
•No response from the wiper switch in lower settings
•Potential flickering or erratic behavior when switching settings

Diagnostic Steps

1
Inspect the wiper control switch for any visible damage or wear.
2
Use an OBD-II scanner to check for any related fault codes.
3
Test the wiper motor operation by applying direct power to it.
4
Check the wiper relay for functionality and proper operation.
5
Inspect the wiring harness for damage or loose connections.
6
Examine the wiper transmission for wear or binding.

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
•Socket set
•Flathead screwdriver
•Phillips screwdriver
•Wire connectors

Parts Required

•Wiper control switch (if faulty)
•Wiper relay (if defective)

Related Faults

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Diagnostic Steps

1
Inspect the wiper control switch for any visible damage or wear.
2
Use an OBD-II scanner to check for any related fault codes.
3
Test the wiper motor operation by applying direct power to it.
4
Check the wiper relay for functionality and proper operation.
5
Inspect the wiring harness for damage or loose connections.
6
Examine the wiper transmission for wear or binding.

Solution

1. Preparation

Gather tools and parts:
- Tools: Multimeter, socket set, flathead screwdriver, Phillips screwdriver, wire connectors
- Parts: Wiper control switch (if faulty), wiper relay (if defective)

2. Remove the Wiper Control Switch

Disconnect the vehicle's battery to avoid any electrical shock.
Remove the steering column cover using a Phillips screwdriver.
Locate the wiper control switch and disconnect the wiring harness from the switch.
Remove the screws securing the control switch and carefully pull it out.

3. Inspect and Test the Wiper Control Switch

Use a multimeter to test the control switch for continuity in all settings (low, high, and intermittent).
If the switch shows no continuity in the low or intermittent settings, replace it with a new unit.

4. Check the Wiper Relay

Locate the wiper relay in the fuse box (refer to the owner's manual for the exact location).
Remove the relay and test it using a multimeter for proper operation.
Replace the relay if it shows signs of failure.

5. Reassemble Components

If any parts were replaced, install the new wiper control switch and relay.
Reattach the steering column cover with screws.
Reconnect the vehicle’s battery.