how to fix a slipping transmission in a Ford F-150 13th Generation (2015-2020)?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Fluid pump
• Transmission fluid pressure gauge
• Screwdrivers
• Transmission filter kit
• Safety glasses
• Gloves

2. Check and Replace Transmission Fluid

1. Inspect Fluid Level: Remove the transmission dipstick and wipe it clean. Reinsert and pull it out again to check the fluid level.
2. Add Fluid If Low: If the fluid is low, use a fluid pump to add the manufacturer's recommended transmission fluid until the correct level is reached.
3. Change Fluid If Contaminated: If the fluid is dark or has a burnt smell, proceed to replace it.
   • Drain Fluid: Remove the transmission pan bolts and carefully lower the pan to drain the old fluid.
   • Replace Filter: Remove the old transmission filter and install the new one from the filter kit.
   • Clean Pan and Magnet: Clean the transmission pan and remove any debris from the magnet inside the pan.
   • Reinstall Pan: Replace the pan, ensuring to use a new gasket for a proper seal. Torque bolts to manufacturer specifications.

3. Inspect and Repair Transmission Components

1. Check the Transmission Control Module (TCM): Inspect for any wiring issues or faults. Replace if necessary.
2. Test Transmission Pressure: Use a pressure gauge to check for proper fluid pressure while the engine is running. Replace the pressure solenoid if pressure is below specifications.
3. Conduct a Road Test: After completing fluid and filter changes, perform a test drive to verify the slipping issue is resolved.