why does my Tesla Model 3 Highland (2024-present) engine misfire during acceleration

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
• Disconnect the 12V battery to ensure safety.

2. Inspect and Replace Spark Plugs

• Locate the spark plugs on the engine.
• Using a spark plug socket, carefully remove each spark plug.
• Inspect the condition of each spark plug for fouling or damage.
• Replace any worn or damaged spark plugs with OEM specifications.
• Torque the new spark plugs to the manufacturer’s specifications (usually around 15-20 Nm).

3. Inspect Ignition Coils

• Remove the ignition coil connectors.
• Unbolt the ignition coils using a socket wrench.
• Inspect each ignition coil for cracks or signs of overheating.
• Replace any faulty ignition coils with new units.
• Reinstall the ignition coils and reconnect the connectors.

4. Update Software

• Ensure the vehicle is connected to Wi-Fi.
• Access the vehicle's software update menu through the touchscreen.
• Follow the prompts to install any available updates.
• Restart the vehicle after the update is complete.

5. Check High-Voltage Battery

• Use a diagnostic tool to assess the battery's state of health and any fault codes.
• If there are indications of battery issues, consult a Tesla service center for further evaluation and potential replacement.