how to diagnose Ford Explorer Sixth Generation (2020-present) transmission slipping issues

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

591 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 (2020-present). 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 systems.
•Allow the engine to cool before opening the transmission fluid system.

Symptoms

•Slipping or delayed engagement during gear shifts
•Unusual engine revving without corresponding vehicle acceleration
•Check engine light illuminated
•Rough or harsh shifting between gears
•Fluid leaks under the vehicle, particularly near the transmission

Diagnostic Steps

1
Scan the vehicle's onboard computer with an OBD-II scanner to check for any error codes related to the transmission.
2
Check the transmission fluid level and condition; ensure it is at the correct level and inspect for discoloration or burnt smell.
3
Inspect the transmission fluid for leaks around the pan, seals, and cooler lines.
4
Test the transmission control module (TCM) for proper operation using a multimeter.
5
Perform a road test to assess the conditions under which the slipping occurs, noting specific speeds and load conditions.
6
Check for any recalls or service bulletins related to the transmission for this generation of the Explorer.

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
•Torque wrench
•Multimeter
•Drain pan
•Fluid pump

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter
•Gasket for transmission pan
•Transmission control module (if faulty)

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Diagnostic Steps

1
Scan the vehicle's onboard computer with an OBD-II scanner to check for any error codes related to the transmission.
2
Check the transmission fluid level and condition; ensure it is at the correct level and inspect for discoloration or burnt smell.
3
Inspect the transmission fluid for leaks around the pan, seals, and cooler lines.
4
Test the transmission control module (TCM) for proper operation using a multimeter.
5
Perform a road test to assess the conditions under which the slipping occurs, noting specific speeds and load conditions.
6
Check for any recalls or service bulletins related to the transmission for this generation of the Explorer.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent electrical shorts.

2. Fluid Change

Sub-steps:
1. Locate the transmission drain plug and place a drain pan underneath.
2. Remove the drain plug and allow the fluid to drain completely.
3. Replace the drain plug and torque it to the manufacturer's specifications.
4. Remove the transmission fluid dipstick and add new transmission fluid that meets Ford specifications (typically Mercon LV).
5. Start the engine and cycle through the gears with the brake applied to ensure fluid circulates.
6. Check the fluid level again and adjust as necessary.

3. Transmission Filter Replacement

Sub-steps:
1. Remove the transmission pan by loosening the bolts and carefully prying it off.
2. Remove the old filter from the transmission and clean the mounting surface.
3. Install the new filter, ensuring it is seated properly.
4. Clean the transmission pan and install a new gasket.
5. Reinstall the transmission pan and torque the bolts to the recommended specifications.

4. TCM Inspection and Replacement

Sub-steps:
1. Locate the transmission control module, typically found near the transmission or under the dashboard.
2. Disconnect the wiring harness and remove any mounting bolts.
3. Install the new TCM and reconnect the wiring harness.
4. Reconnect the battery and clear any error codes using the OBD-II scanner.