how do I diagnose the transmission slipping in my Ford Explorer Fifth Generation (2011-2019)?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

558 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 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

•Disconnect the battery before working on electrical components
•Allow the engine to cool before opening the transmission or working on fluid systems

Symptoms

•Transmission hesitates during acceleration
•Unusual engine revving without corresponding vehicle speed increase
•Harsh or delayed shifts
•Transmission fluid leaks under the vehicle
•Warning lights illuminated on the dashboard

Diagnostic Steps

1
Check transmission fluid level and condition
2
Scan for error codes using OBD-II scanner
3
Inspect transmission fluid for contamination
4
Examine the transmission filter
5
Test the transmission solenoids
6
Perform a road test

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
•Multimeter
•Fluid catch pan
•Funnel
•Safety gloves

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter (if applicable)
•Transmission solenoids (if needed)

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Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, multimeter, fluid catch pan, funnel, and safety gloves.
Park the vehicle on a level surface, ensure the engine is cool, and engage the parking brake. Disconnect the battery.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Use a fluid catch pan to drain the old transmission fluid through the pan drain plug.
3. Replace the transmission fluid filter if applicable.
4. Refill with the manufacturer-recommended transmission fluid (typically Mercon LV for Ford vehicles) using a funnel.

3. Test and Replace Transmission Solenoids

Sub-steps:
1. Remove the transmission pan to access the solenoids.
2. Disconnect the electrical connectors from the solenoids.
3. Use a multimeter to test each solenoid for proper resistance.
4. Replace any solenoids that are out of specification.

4. Reassemble and Test

Sub-steps:
1. Reattach the transmission pan using a new gasket and tighten the bolts to the manufacturer's torque specifications (typically 10-12 ft-lbs).
2. Reconnect the battery.
3. Start the vehicle and check for leaks, then perform a road test to ensure the slipping has resolved.