Tesla Model 3 Highland (2024-present) transmission slips when accelerating what's the cause

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secured with wheel chocks.
• Disconnect the battery before starting any electrical work.

2. Check and Replace Transmission Fluid

• Locate the transmission fluid access point.
• Using a fluid pump, extract fluid to check for quality and level.
• If the fluid is dirty or low, replace it with the manufacturer's recommended transmission fluid.
• Refill to the appropriate level and check for leaks.

3. Inspect Transmission Components

• Remove any protective covers to access the transmission assembly.
• Check the condition of the clutch packs/gear assemblies for wear.
• Inspect all seals and gaskets for signs of leaks and replace as needed.

4. Update Software

• Connect the vehicle to a Tesla service terminal or use the Tesla app to check for software updates.
• Follow on-screen instructions to install any available updates, ensuring that the transmission control software is current.

5. Reassemble and Test

• Reinstall any removed components or covers securely.
• Reconnect the battery.
• Conduct a test drive to confirm that the transmission slipping issue has been resolved.