how to diagnose Ford Explorer Fifth Generation (2011-2019) delayed engagement in transmission

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

569 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 delayed engagement in the transmission of 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 engine and transmission to cool before servicing.

Symptoms

•Delay when shifting from park to drive or reverse
•Engine revs without immediate forward or reverse motion
•Harsh or slipping shifts during acceleration
•Transmission warning light illuminated on the dashboard
•Increased engine RPM when shifting without movement

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any stored error codes related to the transmission.
2
Check the transmission fluid level and condition; look for discoloration or a burnt smell.
3
Inspect transmission fluid lines for leaks or damage.
4
Test the transmission solenoids using a multimeter to ensure they are functioning correctly.
5
Perform a visual inspection of the transmission control module (TCM) for any signs of corrosion or damage.
6
Check for any software updates or reprogramming needs for the TCM.

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
•Multimeter
•Torque wrench
•Drain pan

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Transmission solenoids (if faulty)
•Gasket for transmission pan

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for any stored error codes related to the transmission.
2
Check the transmission fluid level and condition; look for discoloration or a burnt smell.
3
Inspect transmission fluid lines for leaks or damage.
4
Test the transmission solenoids using a multimeter to ensure they are functioning correctly.
5
Perform a visual inspection of the transmission control module (TCM) for any signs of corrosion or damage.
6
Check for any software updates or reprogramming needs for the TCM.

Solution

1. Preparation

Gather tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.
Ensure the vehicle is on a level surface and secured with wheel chocks.

2. Fluid Inspection and Replacement

Remove the transmission dipstick and check fluid level.
If low, add the appropriate transmission fluid (check owner’s manual for specifications).
If fluid is burnt or contaminated, proceed to drain and replace.
1. Place a drain pan under the transmission.
2. Remove the transmission pan bolts using a socket set.
3. Carefully lower the transmission pan and drain the fluid.
4. Replace the transmission filter if applicable.
5. Clean the transmission pan and replace the gasket.
6. Reinstall the pan and tighten bolts to manufacturer specifications (typically around 10-12 ft-lbs).

3. Solenoid Testing and Replacement

Locate the transmission solenoids (usually inside the transmission).
Disconnect the electrical connectors from the solenoids.
Use a multimeter to check the resistance of each solenoid (refer to the service manual for specifications).
If any solenoid is out of range, remove and replace it.
1. Unbolt the solenoid from the transmission.
2. Install the new solenoid and secure it with bolts to the manufacturer's torque specifications.
3. Reconnect the electrical connectors.

4. TCM Inspection and Reprogramming

If no issues are found with fluid and solenoids, inspect the TCM.
Disconnect the TCM and check for corrosion or loose connections.
If the TCM is faulty, replace it by removing the mounting screws and installing a new unit.
Reconnect the battery and use a scan tool to check for software updates or reprogram the TCM as required.