why does my Ford Explorer Fifth Generation (2011-2019) have a check transmission warning

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

513 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 the check transmission warning 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

•Always allow the engine to cool before working on the transmission.
•Ensure the vehicle is securely lifted and supported when working underneath.

Symptoms

•Check transmission warning light illuminated on the dashboard
•Slipping gears or delayed engagement
•Rough or erratic shifting during acceleration
•Unusual noises (grinding or whining) coming from the transmission
•Fluid leaks under the vehicle
•Increased engine RPMs without corresponding acceleration

Diagnostic Steps

1
Scan the vehicle's onboard computer for any stored error codes using an OBD-II scanner.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission for any visible signs of damage or wear.
4
Test the transmission fluid pressure with a gauge to ensure it is within specifications.
5
Examine the transmission control module (TCM) for faults or updates.
6
Verify the condition of the transmission cooler lines for leaks or blockages.

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
•Transmission fluid dipstick
•Funnel
•Catch pan
•Socket set

Parts Required

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

Related Faults

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Symptoms

•Check transmission warning light illuminated on the dashboard

•Slipping gears or delayed engagement

•Rough or erratic shifting during acceleration

•Unusual noises (grinding or whining) coming from the transmission

•Fluid leaks under the vehicle

•Increased engine RPMs without corresponding acceleration

Diagnostic Steps

1
Scan the vehicle's onboard computer for any stored error codes using an OBD-II scanner.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission for any visible signs of damage or wear.
4
Test the transmission fluid pressure with a gauge to ensure it is within specifications.
5
Examine the transmission control module (TCM) for faults or updates.
6
Verify the condition of the transmission cooler lines for leaks or blockages.

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 ensure safety.

2. Fluid Check and Replacement

Tools Required: Transmission fluid dipstick, funnel, catch pan
Remove the transmission dipstick and check the fluid level. If low, add the appropriate transmission fluid as specified in the owner’s manual.
If the fluid is dark or has a burnt smell, it should be replaced.
1. Place a catch pan under the transmission pan.
2. Remove the transmission pan bolts and carefully lower the pan.
3. Drain the old fluid completely.
4. Replace the transmission filter if applicable.
5. Reinstall the transmission pan with a new gasket.
6. Fill the transmission with new fluid through the dipstick tube using a funnel.

3. Transmission Control Module (TCM) Inspection

Tools Required: OBD-II scanner
Reconnect the battery and use the OBD-II scanner to check for any TCM-related error codes.
If codes are present, refer to the manual for specific troubleshooting steps, which may include reprogramming or replacing the TCM.

4. Physical Inspection

Inspect the wiring and connectors leading to the transmission for damage or corrosion.
Check the transmission mounts for wear or failure; replace if necessary.