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

3 min read

539 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

•Always disconnect the battery before working on electrical components.
•Allow the engine to cool down before opening the radiator or working on the transmission.

Symptoms

•Check engine light illuminated
•Slipping or harsh shifting during acceleration
•Unusual transmission noises (grinding or whining)
•Overheating warning message on the dashboard
•Decreased fuel efficiency
•Burning smell from the transmission area

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for error codes related to the transmission.
2
Inspect the transmission fluid level and condition; low or burnt fluid can indicate overheating.
3
Check for any visible leaks in the transmission cooler lines and seals.
4
Inspect the radiator and transmission cooler for obstructions or damage.
5
Test the operation of the transmission cooler fan to ensure it activates as needed.
6
Review service history to determine if the transmission fluid has been changed according to the manufacturer's recommendations.

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 pump
•Socket set
•Screwdriver set
•Torque wrench
•Multimeter (for fan testing)

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter (if applicable)
•Replacement hoses (if necessary)
•Transmission cooler fan (if defective)

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for error codes related to the transmission.
2
Inspect the transmission fluid level and condition; low or burnt fluid can indicate overheating.
3
Check for any visible leaks in the transmission cooler lines and seals.
4
Inspect the radiator and transmission cooler for obstructions or damage.
5
Test the operation of the transmission cooler fan to ensure it activates as needed.
6
Review service history to determine if the transmission fluid has been changed according to the manufacturer's recommendations.

Solution

1. Fluid Inspection and Replacement

Inspect Fluid: Check the transmission fluid level using the dipstick. If the fluid is low, fill it to the correct level.
Fluid Condition: If the fluid is burnt or contaminated, proceed with a fluid change.
Fluid Replacement:
1. Drain the old transmission fluid using a fluid pump or by removing the drain plug.
2. Replace the transmission filter if applicable.
3. Refill with the manufacturer-recommended transmission fluid (typically Mercon LV for Ford).
4. Check for leaks after filling.

2. Cooling System Check

Inspect Coolers:
1. Visually inspect the transmission cooler lines for kinks or damage.
2. Remove any debris or blockages from the radiator and transmission cooler.
3. Replace damaged hoses if necessary.
Test Fan Operation:
1. Start the vehicle and allow it to reach operating temperature.
2. Check if the transmission cooler fan activates when the transmission reaches high temperatures.
3. If the fan does not operate, replace the fan or relay as needed.

3. Software Update

Check for any available software updates for the transmission control module (TCM) that may address overheating issues.
Update the software using a Ford-specific diagnostic tool if required.