how to fix my Ford Explorer Fifth Generation (2011-2019) transmission slipping when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

511 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 (2011-2019). 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 before working on electrical systems.
•Allow the engine and transmission to cool before opening any components.

Symptoms

•Slipping sensation during acceleration
•Delayed or harsh shifting
•Check engine light illuminated
•Fluid leaks under the vehicle
•Unusual noises (grinding or whining) during gear changes

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect for fluid leaks around the transmission and transmission cooler lines.
4
Test the battery voltage and charging system to ensure proper electrical function.
5
Examine the transmission filter for clogs or contamination.
6
Conduct a visual inspection of the transmission for any signs of damage or wear.

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 dipstick
•Fluid catch pan

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter
•Gasket for transmission pan (if applicable)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect for fluid leaks around the transmission and transmission cooler lines.
4
Test the battery voltage and charging system to ensure proper electrical function.
5
Examine the transmission filter for clogs or contamination.
6
Conduct a visual inspection of the transmission for any signs of damage or wear.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, torque wrench, transmission fluid dipstick, fluid catch pan.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Inspect the fluid level; if low, add the manufacturer-recommended transmission fluid (typically Mercon LV for Ford).
3. If the fluid is dark or burnt, proceed to replace it.
4. Remove the transmission drain plug (if equipped) or the pan to drain the old fluid into a catch pan.
5. Replace the transmission filter, ensuring the replacement matches OEM specifications.
6. Reinstall the drain plug or transmission pan, torque to manufacturer specifications (typically around 10-12 ft-lbs).
7. Refill the transmission with new fluid through the dipstick tube until the correct level is reached.

3. Inspect and Repair Transmission Components

Sub-steps:
1. If slipping persists, remove the transmission and check for worn or damaged clutches and bands.
2. Inspect the torque converter for proper function; replace if faulty.
3. If the transmission control module shows fault codes, reprogram or replace as necessary.
4. Reinstall the transmission, ensuring all connections are secure.
5. Reconnect the battery.