how to diagnose Ford Explorer Fifth Generation (2011-2019) transmission slipping

Ford Explorer Fifth Generation (2011-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

566 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 in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the transmission pan.

Symptoms

•Engine RPM increases without corresponding acceleration
•Delayed engagement when shifting from park to drive or reverse
•Harsh or erratic shifting between gears
•Check engine light illuminated
•Fluid leaks under the vehicle
•Burning smell from the transmission area

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the transmission fluid level and condition; look for discoloration or burnt smell.
3
Check for any visible leaks around the transmission pan and seals.
4
Test the transmission solenoids using a multimeter to ensure proper resistance.
5
Perform a road test to replicate the slipping and note any patterns in shifting behavior.
6
Inspect the transmission filter for clogs or obstructions, if applicable.

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
•Drain pan
•Multimeter

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter
•Transmission pan gasket
•Transmission solenoids (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the transmission fluid level and condition; look for discoloration or burnt smell.
3
Check for any visible leaks around the transmission pan and seals.
4
Test the transmission solenoids using a multimeter to ensure proper resistance.
5
Perform a road test to replicate the slipping and note any patterns in shifting behavior.
6
Inspect the transmission filter for clogs or obstructions, if applicable.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and securely lifted using jack stands.
Disconnect the battery to prevent electrical issues during the repair.

2. Fluid Change

Drain Transmission Fluid:
- Place a drain pan under the transmission pan.
- Remove the transmission pan bolts using a socket set.
- Carefully lower the pan and allow the old fluid to drain completely.
Replace Transmission Filter:
- Remove the old filter by unfastening any retaining bolts.
- Replace it with a new filter, ensuring it is seated properly.

3. Inspect and Repair

Inspect Gaskets and Seals:
- Remove the old transmission pan gasket and clean the mating surfaces.
- Inspect the transmission output shaft and input shaft seals; replace if damaged.
Install New Fluid:
- Install a new gasket on the transmission pan.
- Reattach the transmission pan and torque the bolts to manufacturer specifications (usually around 10-12 ft-lbs).
- Refill the transmission with the appropriate type of fluid (Mercon LV is typically used for this model).

4. Electrical Connections

Check Transmission Solenoids:
- If solenoids are faulty, remove the transmission valve body (follow manufacturer specifications for removal).
- Replace any faulty solenoids and reassemble the valve body.

5. Final Assembly

Reconnect the battery.
Start the vehicle and allow it to idle, checking for any leaks around the transmission pan.
Shift through all gears to ensure proper operation.