how to fix the speedometer not working on Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

537 words

Problem Statement

Learn how to diagnose and fix a non-functioning speedometer in a 2020-present Ford Explorer. Step-by-step guide with tools and procedures.

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 shorts.
•Allow the engine to cool before performing any repairs on the transmission components.

Symptoms

•Speedometer needle remains at zero
•Check engine light illuminated
•Erratic speedometer readings
•Vehicle speed not displayed on the digital dashboard
•Possible transmission shifting issues

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Inspect the vehicle’s speed sensor for damage or disconnection.
3
Check the wiring and connectors leading to the speed sensor for any signs of wear or corrosion.
4
Test the speed sensor output with a multimeter to confirm functionality.
5
Verify the functionality of the Instrument Cluster by checking for other gauge issues.
6
Inspect the vehicle’s fuses related to the instrument cluster and speedometer.

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
•Socket set
•Multimeter
•Wire strippers and connectors
•Torque wrench

Parts Required

•New speed sensor
•Electrical connectors (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Inspect the vehicle’s speed sensor for damage or disconnection.
3
Check the wiring and connectors leading to the speed sensor for any signs of wear or corrosion.
4
Test the speed sensor output with a multimeter to confirm functionality.
5
Verify the functionality of the Instrument Cluster by checking for other gauge issues.
6
Inspect the vehicle’s fuses related to the instrument cluster and speedometer.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the negative battery terminal to prevent electrical shorts.
Allow the engine to cool before working on any components.

2. Inspect and Replace Speed Sensor

Locate the Speed Sensor:
- Refer to the vehicle's service manual for the exact location of the speed sensor (usually found on the transmission).
Remove the Speed Sensor:
- Disconnect the electrical connector from the speed sensor.
- Use a socket set to remove the speed sensor from its mounting.
Inspect the Speed Sensor:
- Check the sensor for physical damage or wear.
- If the sensor appears faulty, proceed to replace it.
Install the New Speed Sensor:
- Apply a small amount of engine oil to the O-ring of the new speed sensor to ensure a good seal.
- Position the new sensor and tighten it to the manufacturer’s specified torque (typically around 10-15 lb-ft).
- Reconnect the electrical connector securely.

3. Check Wiring and Connectors

Inspect Wiring:
- Follow the wiring harness from the speed sensor to the instrument cluster.
- Look for any frayed wires, loose connections, or signs of corrosion.
Repair or Replace Damaged Wiring:
- If any wiring issues are identified, repair or replace the damaged sections using appropriate electrical connectors and heat-shrink tubing.
- Ensure all connections are secure.

4. Reconnect Battery and Test

Reconnect the negative battery terminal.
Start the vehicle and allow it to reach normal operating temperature.
Observe the speedometer for proper functionality.