how to fix my Tesla Outback's heater that won’t turn on?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety during repairs.
• Allow the engine to cool down completely before proceeding.

2. Inspect and Replace Fuses

• Locate the fuse box according to the owner's manual.
• Remove the relevant fuse related to the HVAC system using a fuse puller.
• Inspect the fuse; if blown, replace it with a new fuse of the same amperage.

3. Check and Refill Coolant

• Identify the coolant reservoir and check the coolant level.
• If low, add the manufacturer-recommended coolant type until it reaches the proper level.
• Inspect for any visible leaks around hoses and the radiator.

4. Flush the Heater Core

• Disconnect the heater core hoses from the engine bay.
• Use a garden hose to flush the heater core with water until it runs clear.
• Reconnect the hoses ensuring they are secure.

5. Test HVAC System

• Reconnect the vehicle’s battery.
• Start the engine and adjust the climate control settings to the heater.
• Monitor the operation of the heater for proper function.