how to tell if my Ford Explorer has a transmission fluid leak

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

520 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to identify and fix transmission fluid leaks in your Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before working on the transmission.
•Ensure the vehicle is securely lifted on jack stands if working underneath.

Symptoms

•Puddles or spots of red or brown fluid under the vehicle
•A noticeable burning smell when the engine is running
•Slipping or delayed engagement when shifting gears
•Check engine light illuminated
•Unusual noise when the vehicle is in gear (grinding or whining)
•Low transmission fluid level when checked

Diagnostic Steps

1
Inspect the ground underneath the vehicle for fluid puddles.
2
Check the transmission fluid level using the dipstick; note the color and consistency of the fluid.
3
Visually inspect the transmission pan and seals for signs of wear or damage.
4
Look for leaks around the transmission cooler lines and connections.
5
Start the engine and observe for any signs of fluid spraying or dripping.
6
Use a flashlight to examine the transmission case for wetness or fluid accumulation.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Socket set
•Torque wrench
•Seal puller
•Funnel
•Degreaser

Parts Required

•Transmission fluid
•New transmission seals
•New transmission pan gasket (if replacing the pan)

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Symptoms

•Puddles or spots of red or brown fluid under the vehicle

•A noticeable burning smell when the engine is running

•Slipping or delayed engagement when shifting gears

•Check engine light illuminated

•Unusual noise when the vehicle is in gear (grinding or whining)

•Low transmission fluid level when checked

Diagnostic Steps

1
Inspect the ground underneath the vehicle for fluid puddles.
2
Check the transmission fluid level using the dipstick; note the color and consistency of the fluid.
3
Visually inspect the transmission pan and seals for signs of wear or damage.
4
Look for leaks around the transmission cooler lines and connections.
5
Start the engine and observe for any signs of fluid spraying or dripping.
6
Use a flashlight to examine the transmission case for wetness or fluid accumulation.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Wear safety gloves and goggles.

2. Clean the Area

Use a degreaser to clean the area around the transmission pan and components to identify fresh leaks.
Rinse and dry thoroughly.

3. Inspect and Replace Seals

Inspect Seals:
- Remove the transmission pan if necessary.
- Check for worn or damaged seals around the pan and input/output shafts.
Replace Seals:
- Remove old seals using a seal puller.
- Install new seals, ensuring they are properly seated.
- Use appropriate sealant if required.

4. Repair or Replace Transmission Pan

Inspect Pan:
- Check for cracks or deformations in the transmission pan.
Repair Pan (if applicable):
- Clean and use a sealant to patch small cracks.
Replace Pan (if necessary):
- Remove the old pan and clean the surface.
- Install a new transmission pan with a new gasket, torquing bolts to manufacturer specifications (typically around 8-12 ft-lbs).

5. Refill Transmission Fluid

Use a funnel to add the correct type of transmission fluid through the dipstick tube.
Check the owner's manual for the specific fluid type and capacity.