how to troubleshoot Tesla Model Y Current (2020-present) lighting issues

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface and turned off.
• Disconnect the 12V battery to prevent electrical shock.

2. Replace Faulty Bulbs

• Sub-steps:
  • Access the headlight and taillight assemblies by removing the necessary panel or cover.
  • Remove the old bulb by twisting it counterclockwise and pulling it out.
  • Install the new bulb by inserting it into the socket and twisting it clockwise until secure.
• Tools Required:
  • Screwdriver set (if necessary for panel removal)
• Safety Warnings:
  • Avoid touching the glass part of the new bulbs with bare hands to prevent premature failure due to oil contamination.

3. Repair or Replace Wiring and Connectors

• Sub-steps:
  • Identify any damaged wiring or corroded connectors.
  • Use wire strippers to remove damaged sections and splice in new wire where necessary, ensuring to use heat-shrink tubing for insulation.
  • Reconnect any loose connectors or replace them if they are damaged.
• Tools Required:
  • Wire strippers
  • Soldering iron (if soldering is required)

4. Replace Blown Fuses

• Sub-steps:
  • Locate the fuse box (usually found under the dashboard or in the trunk).
  • Identify the fuse related to the lighting system using the fuse diagram.
  • Remove the faulty fuse using fuse pullers and replace it with a new fuse of the same amperage.
• Tools Required:
  • Fuse puller (or needle-nose pliers)

5. Reconnect Battery and Test

• Sub-steps:
  • Reconnect the vehicle’s 12V battery.
  • Start the vehicle and test all lighting functions, including headlights, taillights, and interior lights.
• Safety Warnings:
  • Ensure all tools are removed from the engine bay before reconnecting the battery.