why does my Tesla Model S Plaid/Refresh (2021-present) headlights flicker intermittently?

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle in a safe, well-lit area.
• Disconnect the negative terminal of the battery to ensure safety during electrical work.

2. Inspect and Replace Headlight Bulbs

• Remove the headlight assembly by unscrewing the retaining screws.
• Carefully disconnect the wiring harness from the bulb socket.
• Remove the old bulb by twisting it counterclockwise and replace it with a new bulb of the same type.
• Reconnect the wiring harness and reassemble the headlight assembly.

3. Check and Repair Wiring Connections

• Inspect the wiring harness connected to the headlights for any signs of wear, fraying, or corrosion.
• Clean any corroded connectors with electrical contact cleaner.
• Tighten any loose connections or repair damaged wiring using appropriate splicing techniques.

4. Test and Replace Headlight Relay

• Locate the headlight relay in the fuse box as per the vehicle's manual.
• Remove the relay and test it for continuity using a multimeter.
• If faulty, replace the relay with a new one of the same specification.

5. Update Vehicle Software

• Connect the vehicle to Wi-Fi and check for software updates in the settings menu.
• Follow on-screen prompts to install any available updates which may address electrical system bugs.