how to check Ford F-150 13th Generation (2015-2020) for transmission leaks

Ford F-150 13th Generation (2015-2020)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

523 words

Problem Statement

Learn how to check for transmission leaks in Ford F-150 13th Generation (2015-2020). Follow our step-by-step guide for diagnostics and solutions.

Affected Component

Transmission

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always ensure the vehicle is securely lifted and supported before working underneath.
•Allow the transmission to cool before checking fluid levels or inspecting for leaks.

Symptoms

•Transmission fluid spots under the vehicle
•Low transmission fluid level warning
•Slipping gears during acceleration
•Unusual noises when changing gears
•Delayed engagement when shifting into drive or reverse

Diagnostic Steps

1
Inspect the ground under the vehicle for fresh transmission fluid.
2
Check the transmission fluid level using the dipstick while the engine is running and the vehicle is in park.
3
Visually inspect the transmission pan and seals for signs of fluid leakage.
4
Examine the transmission cooler lines for cracks or loose connections.
5
Use a UV dye added to the transmission fluid, then check for leaks with a UV light if initial inspections are inconclusive.

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

•Jack
•Jack stands
•Clean rags
•Funnel
•UV dye
•UV light

Parts Required

•Transmission pan gasket
•Transmission fluid

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Diagnostic Steps

1
Inspect the ground under the vehicle for fresh transmission fluid.
2
Check the transmission fluid level using the dipstick while the engine is running and the vehicle is in park.
3
Visually inspect the transmission pan and seals for signs of fluid leakage.
4
Examine the transmission cooler lines for cracks or loose connections.
5
Use a UV dye added to the transmission fluid, then check for leaks with a UV light if initial inspections are inconclusive.

Solution

1. Preparation

Tools Required: Jack and jack stands, clean rags, funnel, UV dye (if needed), UV light (if dye is used).
Ensure the vehicle is parked on a level surface and the engine is off. Allow the transmission to cool if it has been running.

2. Raise the Vehicle

Use a jack to lift the front of the vehicle.
Securely place jack stands under the frame for safety.

3. Inspect Transmission Pan and Seals

Wipe the transmission pan with a clean rag to remove any dirt.
Check the gasket between the transmission pan and the transmission case for any signs of wear or damage.
Inspect the pan for rust, corrosion, or cracks.

4. Check Transmission Cooler Lines

Follow the cooler lines from the transmission to the radiator.
Inspect for any cracks, rust, or loose connections that could be leaking fluid.
Tighten any loose fittings with a wrench.

5. Add UV Dye (if necessary)

If no leaks are visible, add a small amount of UV dye to the transmission fluid.
Drive the vehicle for a short distance to circulate the dye.
Recheck the system using a UV light to locate any leaks.