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

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

526 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 the battery before working on electrical systems.
•Allow the transmission to cool before working on it to avoid burns.

Symptoms

•Check engine light illuminated
•Engine revs without corresponding increase in speed
•Delayed or harsh shifting between gears
•Unusual noises during gear changes (e.g., whining, grinding)
•Fluid leaks under the vehicle (transmission fluid)
•Poor acceleration performance

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition (color and odor); top off or replace if necessary.
3
Inspect the transmission fluid for contamination (metal shavings, burnt smell).
4
Examine the transmission cooler lines and seals for leaks or damage.
5
Test the transmission solenoids and valve body functionality with a multimeter.
6
Review the vehicle’s service history for recent repairs or maintenance that may affect transmission performance.

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
•Transmission funnel
•Fluid pump

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Transmission pan gasket
•Solenoids (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition (color and odor); top off or replace if necessary.
3
Inspect the transmission fluid for contamination (metal shavings, burnt smell).
4
Examine the transmission cooler lines and seals for leaks or damage.
5
Test the transmission solenoids and valve body functionality with a multimeter.
6
Review the vehicle’s service history for recent repairs or maintenance that may affect transmission performance.

Solution

1. Preparation

Gather all necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Tools Required: Transmission funnel, fluid pump, container for old fluid.
Remove the transmission fluid dipstick and check fluid level.
If low, add the recommended type of transmission fluid (consult owner’s manual for specifications).
If fluid is dirty, drain the old fluid by removing the transmission pan.
- Sub-steps:
  - Place a container under the transmission pan to catch fluid.
  - Remove pan bolts using a socket set, then carefully lower the pan.
  - Replace the transmission filter if applicable.
  - Reinstall the pan with a new gasket, torque bolts to manufacturer specifications (usually around 8-10 ft-lbs).

3. Inspect Transmission Components

Tools Required: Socket set, torque wrench, multimeter.
Inspect the transmission solenoids:
- Remove the electrical connector and use a multimeter to check resistance.
- If out of specification, replace the faulty solenoid.
Check the valve body for any signs of wear or damage.
Reassemble all components, ensuring no foreign objects are left inside.