how to troubleshoot power windows not working in my Tesla Model 3 Highland (2024-present)

Solution

1. Preparation

• Tools Required: Basic socket set, multimeter, trim removal tools.
• Ensure the vehicle is in a safe, stationary position and turn off the ignition.
• Disconnect the 12V battery to prevent any electrical shorts.

2. Inspect and Replace Fuse

• Locate the fuse box under the dashboard or in the front trunk area.
• Use the fuse puller tool to remove the power window fuse (refer to the owner’s manual for the exact fuse location).
• Inspect the fuse for continuity using a multimeter. If blown, replace it with a new fuse of the same amperage.

3. Check Window Control Switches

• Remove the door panel using trim removal tools to access the window control switches.
• Disconnect the wiring harness to the window switch.
• Use a multimeter to test the switch for continuity when pressed. Replace if faulty.

4. Inspect Wiring and Connectors

• While the door panel is removed, inspect all wiring harnesses and connectors for signs of fraying, corrosion, or disconnection.
• Repair or replace any damaged wiring and ensure all connectors are securely fastened.

5. Test Window Motor Operation

• Connect the wiring harness back to the window motor.
• Use a multimeter to check for voltage at the motor when the switch is activated.
• If no voltage is present, further diagnose the wiring or the switch itself.
• If voltage is present but the motor does not operate, replace the window motor.