how to fix a transmission that slips in my Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather tools and materials.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, wrench set, funnel.
• Sub-steps:
  1. Raise the vehicle securely using jack stands.
  2. Remove the transmission pan bolts and carefully lower the pan.
  3. Drain the old transmission fluid into a suitable container.
  4. Replace the transmission filter if applicable.
  5. Clean the transmission pan and magnet to remove any debris.
  6. Reinstall the pan with a new gasket and torque bolts to manufacturer specifications.
  7. Refill the transmission with the appropriate type and amount of fluid using a funnel.

3. Inspect and Replace Transmission Solenoids

• Tools Required: Socket set, torque wrench, multimeter.
• Sub-steps:
  1. Locate the transmission solenoids based on the service manual.
  2. Disconnect the wiring harness from each solenoid.
  3. Remove the solenoids and test with a multimeter for resistance; replace if faulty.
  4. Install new solenoids and reconnect the wiring harness.
  5. Torque bolts to manufacturer specifications.

4. Reprogram or Update Transmission Control Module

• Tools Required: OBD-II scanner with programming capabilities.
• Sub-steps:
  1. Connect the OBD-II scanner to the vehicle’s diagnostic port.
  2. Check for software updates or reprogramming available for the transmission control module.
  3. Follow the scanner prompts to update or reprogram the module if necessary.