Why does my 2020 Ford Explorer have a transmission fluid leak?

Transmission Fluid Leak in a 2020 Ford Explorer

Symptoms:

1. Puddles or Spots: Noticeable transmission fluid stains on the ground where the vehicle is parked, typically reddish in color.
2. Low Transmission Fluid Level: Check the dipstick for low fluid levels; if it's below the recommended range, it indicates a leak.
3. Gear Shifting Issues: Slipping gears, delayed engagement, or rough shifting may occur if the fluid level is significantly low.
4. Warning Lights: Transmission warning lights may illuminate on the dashboard.

Tools Required

• Hydraulic jack and jack stands
• Transmission fluid dipstick
• Torque wrench
• Socket set (including metric sizes)
• Screwdrivers (flat and Phillips)
• Torque converter seal tool (if applicable)
• Clean rags
• Transmission fluid (Ford Mercon ULV recommended)

Repair Instructions

Step 1: Fixing External Leaks

1. Transmission Pan Gasket Replacement:

   • Drain Fluid: Place a drain pan under the transmission and remove the transmission pan bolts. Carefully lower the pan to drain fluid.
   • Remove Old Gasket: Scrape off the old gasket material from both the pan and the transmission surface using a gasket scraper.
   • Install New Gasket: Place a new transmission pan gasket onto the pan and align it properly.
   • Reattach Pan: Lift the pan back into place and torque the bolts to the manufacturer's specifications (typically between 10-12 ft-lbs).
   • Refill Transmission Fluid: Refill with the appropriate type and amount of transmission fluid through the dipstick tube.

2. Cooler Line Replacement:

   • Disconnect Lines: Using appropriate wrenches, disconnect the cooler lines from the transmission.
   • Replace Lines: Install new lines, ensuring that seals are properly seated to prevent leaks.
   • Reattach and Tighten: Connect the lines back to the transmission and tighten securely.

Step 2: Addressing Internal Leaks (if necessary)

1. Torque Converter Seal Replacement:

   • Remove Transmission: If the torque converter is suspected, the transmission may need to be removed from the vehicle.
   • Replace Seal: Remove the old torque converter seal and install a new one.
   • Reinstall Transmission: Carefully reinstall the transmission, ensuring that the torque converter is seated correctly to avoid future leaks.

2. Valve Body Inspection/Repair:

   • If internal issues are suspected, consult the service manual for detailed disassembly and inspection of the valve body and associated components.

Final Steps

1. Test Drive:

   • After repairs, start the vehicle and allow it to reach operating temperature.
   • Check for any leaks by monitoring the transmission area.
   • Take the vehicle for a test drive to ensure smooth operation and proper shifting.

2. Monitor Fluid Levels:

   • After the test drive, check the transmission fluid level again and adjust as necessary.

By following these steps, you should be able to locate and repair the transmission fluid leak in your 2020 Ford Explorer. If issues persist, further diagnostic testing may be required, potentially by a professional technician.