how to fix the speedometer not working in my Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Gather necessary tools and parts before starting the repair.
• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, Phillips screwdriver.
• Safety Warnings: Disconnect the battery before working on electrical systems.

2. Remove Instrument Cluster

• Use a Phillips screwdriver to remove the screws securing the instrument cluster bezel.
• Carefully detach the bezel and set it aside.
• Unscrew the instrument cluster from the dashboard.
• Gently pull the instrument cluster forward to access the wiring harness.

3. Inspect and Replace Speed Sensor

• Locate the speed sensor, typically found on the transmission housing.
• Disconnect the electrical connector from the speed sensor.
• Remove the speed sensor using a socket set (typically requires a 10mm socket).
• Compare the new speed sensor with the old one to ensure it matches.
• Install the new speed sensor by reversing the removal process and torque it to the manufacturer's specification (usually around 8-10 ft-lbs).
• Reconnect the electrical connector.

4. Reassemble Instrument Cluster

• Reinsert the instrument cluster into its housing.
• Secure it with screws and reattach the cluster bezel.
• Ensure all connectors are firmly in place.

5. Reconnect Battery and Test

• Reconnect the battery and turn on the ignition.
• Check for any dashboard warning lights and ensure the speedometer operates correctly.