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

4 min read

620 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 Sixth Generation (2020-present). Step-by-step guide with diagnostic procedures.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow the vehicle to cool down before working on the transmission.

Symptoms

•Engine RPMs increase without corresponding acceleration
•Harsh or delayed shifting between gears
•Unusual noises during gear changes (e.g., grinding or whining)
•Warning lights illuminated on the dashboard (e.g., check engine light)
•Fluid leaks under the vehicle
•Poor fuel economy

Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to check for any error codes related to the transmission.
2
Inspect the transmission fluid level and condition (color, odor, and presence of debris).
3
Check for any software updates available for the transmission control module (TCM).
4
Conduct a visual inspection of the transmission wiring and connectors for damage or corrosion.
5
Test drive the vehicle to replicate the slipping issue while monitoring RPM and speed.
6
Evaluate the transmission fluid temperature using a scan tool to ensure it is within normal operating range.

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
•Funnel
•Transmission fluid (as specified by manufacturer)
•Rags for cleanup

Parts Required

•Transmission fluid (specific to Ford specifications)
•Transmission filter (if applicable)
•Gasket for transmission pan (if needed)

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Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to check for any error codes related to the transmission.
2
Inspect the transmission fluid level and condition (color, odor, and presence of debris).
3
Check for any software updates available for the transmission control module (TCM).
4
Conduct a visual inspection of the transmission wiring and connectors for damage or corrosion.
5
Test drive the vehicle to replicate the slipping issue while monitoring RPM and speed.
6
Evaluate the transmission fluid temperature using a scan tool to ensure it is within normal operating range.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, funnel, transmission fluid (as specified by manufacturer), rags for cleanup.
Safely lift the vehicle using jack stands and ensure it is stable before beginning work.
Disconnect the battery to avoid electrical shorts during the process.

2. Check and Replace Transmission Fluid

Locate the transmission dipstick or fill plug, depending on the transmission type.
Remove the dipstick/plug and check the fluid level; add fluid if low.
If the fluid is discolored or has a burnt smell, proceed to replace it:
- Sub-steps:
  1. Place a drain pan under the transmission.
  2. Remove the transmission pan bolts using a socket set.
  3. Carefully lower the pan to avoid spilling fluid.
  4. Replace the filter if applicable (remove old filter and install new one).
  5. Clean the pan and the mating surface on the transmission.
  6. Reinstall the pan with new gasket and torque bolts to manufacturer specifications.
  7. Refill the transmission with new fluid using a funnel.

3. Inspect and Repair Wiring and Connectors

Visually inspect the transmission wiring harness and connectors for any signs of wear or damage.
Clean any corroded connectors using electrical contact cleaner and reconnect securely.
If damaged wiring is found, repair or replace as necessary.

4. Update Transmission Control Module (if applicable)

Using the OBD-II scanner, check for any available software updates for the TCM.
Follow manufacturer procedures to update the software as needed.

5. Reconnect Battery and Test Drive

Reconnect the battery terminals and ensure they are secure.
Start the vehicle and allow it to reach operating temperature.
Take the vehicle for a test drive to ensure the slipping issue has been resolved.