why does my Tesla Model Y Current (2020-present) have poor acceleration at high speeds

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the battery is charged to at least 50%.
• Disconnect the 12V battery before beginning work on the electrical systems for safety.

2. Inspect Battery Health

• Use diagnostic software to check the battery's overall health and state of charge.
• Look for any signs of degradation or issues that could affect performance.
• If the battery shows significant wear or capacity loss, consider replacing it.

3. Check Electric Motor and Inverter

• Remove the motor cover (if applicable) to access the electric motor.
• Inspect for any signs of physical damage, wear, or overheating.
• Use a multimeter to check the motor windings for continuity and resistance; replace the motor if faulty.

4. Inspect Cooling Systems

• Check the coolant level and condition in the battery and motor cooling systems.
• Ensure that the cooling fans and pumps are operational; replace any faulty components.
• Flush and replace the coolant if it appears contaminated or below specification.