how to deal with an error code B1470 in my Tesla Model S Original (2012-2020)?

Solution

1. Preparation

• Gather necessary tools: OBD-II scanner, multimeter, and appropriate hand tools.
• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.

2. Inspect Battery Pack

• Step 1: Open the trunk and remove the access cover to the battery pack.
• Step 2: Visually inspect the battery for any signs of damage, leaks, or corrosion.
• Step 3: If corrosion is present, clean the terminals with a mixture of baking soda and water, using a brush, and ensure they are dry before reassembly.

3. Test Battery Cells

• Step 1: Carefully connect the multimeter probes to the battery pack terminals.
• Step 2: Record the voltage of each cell and compare them; cells significantly out of balance may need replacement.
• Step 3: If any cell is reading below the manufacturer's specifications, plan for replacement of the battery module.

4. Check Temperature Sensors

• Step 1: Access the battery temperature sensors through the service panel.
• Step 2: Disconnect the connectors and inspect for damage, corrosion, or loose connections.
• Step 3: Reconnect or replace any faulty sensors.

5. Clear Error Code

• Step 1: Use the OBD-II scanner to clear the B1470 error code from the system.
• Step 2: Perform a test drive to ensure the error does not reappear.