why is my Tesla Outback's fan running continuously?

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, and basic hand tools.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Coolant Level

• Locate the coolant reservoir and check the fluid level.
• If low, add the appropriate type of coolant as specified in the owner's manual until it reaches the full mark.
• Reconnect the battery terminal.

3. Inspect and Replace Cooling Fan Relay

• Locate the fuse box and identify the cooling fan relay using the diagram on the cover.
• Remove the relay using a socket or pliers and inspect for damage.
• If faulty, replace it with a new relay of the same type.

4. Test and Replace Coolant Temperature Sensor

• Use a multimeter to test the resistance of the coolant temperature sensor.
• If the readings are outside the manufacturer's specifications, remove the sensor.
• Install a new coolant temperature sensor and reconnect the wiring harness.

5. Reassemble and Test

• Reconnect any disconnected components and ensure everything is secure.
• Reconnect the negative battery terminal.
• Start the vehicle and observe the fan operation.