why does my Ford Explorer Fifth Generation (2011-2019) transmission slip when driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

526 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 slipping issues in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure the vehicle is on a level surface.
•Allow the engine to cool before opening the transmission pan.

Symptoms

•Transmission slipping during acceleration
•Delayed or harsh shifting
•Unusual engine revving without corresponding vehicle speed increase
•Warning lights illuminated (e.g., check engine light)
•Fluid leaks under the vehicle
•Overheating of the transmission

Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect the transmission fluid level and condition (color and smell).
3
Examine the transmission filter for clogs or blockages.
4
Check for any visible leaks around the transmission seals and gaskets.
5
Test the vehicle's throttle position sensor (TPS) for proper operation.
6
Inspect the transmission control module (TCM) for faults.

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

•OBD-II scanner
•Socket set
•Transmission fluid dipstick
•Torque wrench
•Multimeter

Parts Required

•Transmission filter
•Transmission fluid
•Gasket for transmission pan
•Throttle Position Sensor (if faulty)

Related Faults

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Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect the transmission fluid level and condition (color and smell).
3
Examine the transmission filter for clogs or blockages.
4
Check for any visible leaks around the transmission seals and gaskets.
5
Test the vehicle's throttle position sensor (TPS) for proper operation.
6
Inspect the transmission control module (TCM) for faults.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, transmission fluid dipstick, torque wrench.
Safety Warnings: Disconnect the battery before working on electrical systems. Ensure the vehicle is on a level surface.

2. Address Fluid Issues

Check the transmission fluid level using the dipstick.
- If low: Add the manufacturer-recommended transmission fluid to the correct level.
- If dirty or burnt: Drain the fluid and replace it.
Steps to change the fluid:
1. Raise the vehicle on jack stands.
2. Remove the transmission pan bolts.
3. Carefully lower the pan and drain the old fluid.
4. Replace the filter (remove old filter, install new filter).
5. Reinstall the pan with a new gasket and torque bolts to manufacturer specifications.
6. Fill with new transmission fluid.

3. Inspect and Replace Components

Inspect the Transmission Control Module (TCM):
1. Remove the TCM from its mounting.
2. Check wiring harness for damage.
3. Replace if necessary.
Throttle Position Sensor (TPS) Check:
1. Locate the TPS on the throttle body.
2. Disconnect the electrical connector.
3. Use a multimeter to test the resistance; replace if it is out of specification.

4. Check for Mechanical Issues

Inspect the Transmission Bands:
1. Access the transmission by removing the necessary components.
2. Check the bands for proper adjustment and wear.
3. Adjust or replace bands as needed.

5. Road Test

After repairs, conduct a road test.
- Monitor for any slip conditions during acceleration and shifting.