how to fix Ford Explorer Sixth Generation (2020-present) CVT overheating issues

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

642 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 CVT overheating 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 to ensure safety.
•Ensure the vehicle is parked on a level surface and the engine is cool.

Symptoms

•Transmission warning light illuminated on the dashboard
•Slipping or erratic shifting during acceleration
•Engine revving higher than normal without corresponding vehicle speed increase
•Burning smell coming from the transmission area
•Reduced power or inability to accelerate properly

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the transmission.
2
Check the transmission fluid level and condition using the dipstick; look for discoloration or burnt smell.
3
Inspect the transmission cooling system for blockages or leaks, including the cooler and lines.
4
Verify the operation of the transmission cooler fan to ensure it is functioning properly.
5
Check for any signs of external damage or fluid leaks around the transmission assembly.
6
Run the engine and monitor the transmission temperature with a digital thermometer or temperature gauge.

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
•Fluid extractor or socket set for drain plug
•Digital thermometer or temperature gauge
•Wrenches and sockets for fan removal
•Cleaning solution for the cooler

Parts Required

•Transmission fluid (as specified in the owner’s manual)
•Transmission cooler (if damaged)
•Transmission cooler fan (if necessary)

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the transmission.
2
Check the transmission fluid level and condition using the dipstick; look for discoloration or burnt smell.
3
Inspect the transmission cooling system for blockages or leaks, including the cooler and lines.
4
Verify the operation of the transmission cooler fan to ensure it is functioning properly.
5
Check for any signs of external damage or fluid leaks around the transmission assembly.
6
Run the engine and monitor the transmission temperature with a digital thermometer or temperature gauge.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is cool.
Gather all necessary tools and parts.
Disconnect the battery to ensure safety.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and wipe it clean.
2. Insert the dipstick back into the tube and remove it again to check the fluid level.
3. If the fluid is low, add the appropriate type of transmission fluid (refer to the owner’s manual for specifications).
4. If the fluid is dark or burnt, proceed to change the fluid.
5. Drain the old fluid using a fluid extractor or by removing the drain plug, if equipped.
6. Replace with new transmission fluid, filling it to the proper level as indicated on the dipstick.

3. Inspect and Clean Transmission Cooler

Sub-steps:
1. Locate the transmission cooler and lines.
2. Remove any debris or obstructions around the transmission cooler.
3. Disconnect the transmission cooler lines and inspect for blockages.
4. Flush the cooler with a cleaning solution if needed, or replace it if damaged.

4. Replace Transmission Cooler Fan (If Necessary)

Sub-steps:
1. Remove the front grille and any components obstructing access to the cooler fan.
2. Disconnect the electrical connector from the fan motor.
3. Unbolt and remove the old fan assembly.
4. Install the new fan assembly, ensuring a secure fit.
5. Reconnect the electrical connector.

5. Reconnect Battery and Test Drive

Sub-steps:
1. Reconnect the battery terminals.
2. Start the engine and allow it to reach operating temperature.
3. Test drive the vehicle under various conditions to monitor for overheating and shifting issues.