how to fix transmission fluid leaking on Ford F-150 Fourteenth Generation (2021-present)?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical issues.
• Ensure the vehicle is on a level surface and use jack stands for safety if raising the vehicle.

2. Identify the Leak Source

• Thoroughly clean the transmission area with a degreaser to remove old fluid.
• Use a UV light if dye was added to the fluid to pinpoint the leak source.

3. Replace Damaged Components

A. Transmission Pan Gasket Replacement

1. Drain Fluid:
   • Place a drain pan under the transmission pan.
   • Remove the transmission pan bolts and carefully lower the pan to drain fluid.
2. Remove Old Gasket:
   • Scrape off the old gasket material from the pan and transmission housing.
3. Install New Gasket:
   • Apply a thin layer of gasket maker to one side of the new gasket (if required) and position it on the transmission pan.
4. Reattach the Pan:
   • Reinstall the transmission pan and torque the bolts to the manufacturer's specifications (typically around 10-12 ft-lbs).

B. Replace Seals or Lines

1. Inspect Seals:
   • If there are any damaged seals, remove the old seal and install a new one, ensuring a proper fit.
2. Replace Cooler Lines:
   • If any lines are damaged, remove the affected line by loosening the fittings, replacing it with a new line, and tightening to specifications.

4. Refill Transmission Fluid

1. Refill:
   • Use a funnel to refill the transmission with the appropriate type of fluid as specified in the owner’s manual.
2. Check Level:
   • Start the engine and allow it to reach operating temperature. While in park, check the fluid level with the dipstick and add fluid as necessary.