my Ford Explorer Fifth Generation (2011-2019) transmission fluid is leaking, what to do?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

546 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 diagnose and fix transmission fluid leaks in Ford Explorer (2011-2019). 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 and transmission to cool before starting work.
•Always wear safety glasses and gloves when working on the vehicle.

Symptoms

•Transmission fluid puddles under the vehicle
•Warning light illuminated on the dashboard
•Slipping gears during acceleration
•Delayed or harsh shifting
•Unusual transmission noise (grinding or whining)

Diagnostic Steps

1
Inspect the transmission fluid level using the dipstick to determine if it is low.
2
Visually check around the transmission case for signs of leaks or wet spots.
3
Examine transmission cooler lines and connections for any cracks or loose fittings.
4
Inspect the transmission pan for damage or signs of corrosion.
5
Look for leaks at the transmission output shaft seal and input shaft seal.
6
Use a UV dye test if necessary to identify the source of the leak.

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
•Drain pan
•Gasket scraper
•Funnel

Parts Required

•Transmission fluid (Ford MERCON LV)
•Transmission pan gasket or RTV sealant

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Diagnostic Steps

1
Inspect the transmission fluid level using the dipstick to determine if it is low.
2
Visually check around the transmission case for signs of leaks or wet spots.
3
Examine transmission cooler lines and connections for any cracks or loose fittings.
4
Inspect the transmission pan for damage or signs of corrosion.
5
Look for leaks at the transmission output shaft seal and input shaft seal.
6
Use a UV dye test if necessary to identify the source of the leak.

Solution

1. Preparation

Gather Tools and Parts: Ensure you have the necessary tools and replacement parts ready.
Safety Precautions: Park the vehicle on a level surface, engage the parking brake, and wear safety glasses and gloves.

2. Drain Transmission Fluid

Sub-steps:
1. Place a drain pan under the transmission pan.
2. Remove the transmission pan bolts using a socket set.
3. Carefully lower the pan to drain the fluid completely.

3. Inspect and Replace Gasket or Seal

Sub-steps:
1. Remove the old gasket material from the pan and the transmission case using a scraper or gasket remover.
2. Inspect the pan for any cracks or damage and replace if necessary.
3. Apply a new gasket or RTV sealant according to the manufacturer’s specifications.

4. Reinstall Transmission Pan

Sub-steps:
1. Position the transmission pan back onto the transmission.
2. Hand-tighten the bolts and then torque them to the manufacturer's specified torque value (usually around 10-12 ft-lbs).
3. Ensure that the gasket is evenly compressed.

5. Refill Transmission Fluid

Sub-steps:
1. Using a funnel, refill the transmission with the appropriate type and amount of fluid (Ford MERCON LV fluid is typically required).
2. Start the engine and allow it to reach operating temperature.
3. With the engine running, shift through the gears to circulate the fluid.

6. Check for Leaks

Sub-steps:
1. After refilling, inspect the transmission area for any signs of leaking fluid.
2. If no leaks are present, lower the vehicle and take it for a short test drive.