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

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

468 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 symptoms and solutions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Allow the engine and transmission to cool before performing any repairs.

Symptoms

•Check engine light illuminated
•Engine revs without an increase in speed
•Delayed or harsh shifting between gears
•Transmission fluid leaks under the vehicle
•Unusual noises during operation, such as whining or grinding
•Increased fuel consumption

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related codes.
2
Check the transmission fluid level and condition; look for signs of contamination or burnt smell.
3
Inspect the transmission fluid for leaks around seals and lines.
4
Test the transmission's electrical connections and wiring for damage or corrosion.
5
Verify that the transmission control module (TCM) is functioning correctly by checking its inputs and outputs.
6
Conduct a road test to observe transmission behavior and note any irregularities in shifting.

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
•Transmission fluid pump
•Electrical contact cleaner

Parts Required

•Transmission fluid
•Transmission filter
•Transmission pan gasket

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related codes.
2
Check the transmission fluid level and condition; look for signs of contamination or burnt smell.
3
Inspect the transmission fluid for leaks around seals and lines.
4
Test the transmission's electrical connections and wiring for damage or corrosion.
5
Verify that the transmission control module (TCM) is functioning correctly by checking its inputs and outputs.
6
Conduct a road test to observe transmission behavior and note any irregularities in shifting.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and secured with wheel chocks.
Disconnect the battery to prevent electrical shorts while working.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and wipe it clean.
2. Insert the dipstick back and remove it again to check fluid level.
3. If low, add the correct type of transmission fluid (consult the owner's manual for specifications).
4. If fluid is burnt or contaminated, drain the old fluid completely.
5. Replace with new transmission fluid, ensuring the correct fill level.

3. Inspect and Replace Transmission Filter

Sub-steps:
1. Remove the transmission pan by unscrewing the bolts (use a socket set).
2. Carefully lower the pan to avoid spilling fluid.
3. Remove the old filter and replace it with a new one.
4. Clean the pan and the gasket surface on the transmission.
5. Reinstall the pan with a new gasket, tightening bolts to the manufacturer’s torque specifications.

4. Repair Electrical Connections

Sub-steps:
1. Inspect the wiring harness connected to the transmission for frays or corrosion.
2. Clean any corroded connectors with electrical contact cleaner.
3. Repair or replace any damaged wiring as necessary.

5. Reprogram Transmission Control Module (if applicable)

Sub-steps:
1. Connect an automotive scan tool to the vehicle.
2. Follow the manufacturer's instructions to reprogram the TCM.
3. Clear any diagnostic trouble codes from the system.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Transmission fluid pump
Electrical contact cleaner

Parts Required:

Transmission fluid
Transmission filter
Transmission pan gasket

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always disconnect the battery before working on electrical systems.
Allow the engine and transmission to cool before performing any repairs.