my Ford Explorer Fifth Generation (2011-2019) has a check transmission light what should I do

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

593 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 light issue in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Check transmission light illuminated on the dashboard
•Slipping gears or delayed shifting
•Rough or harsh shifting between gears
•Unusual noises (grinding, whining) when changing gears
•Loss of power during acceleration
•Fluid leaks under the vehicle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific transmission-related trouble codes.
2
Check transmission fluid level and condition; ensure fluid is at the proper level and not burnt or contaminated.
3
Inspect the transmission fluid cooler and lines for leaks or damage.
4
Examine the transmission control module (TCM) connections for corrosion or loose wiring.
5
Perform a visual inspection of the transmission for any signs of physical damage or leaks.
6
Test drive the vehicle to observe shifting behavior and monitor for any unusual sounds or performance issues.

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 pump
•Fluid catch pan

Parts Required

•Transmission fluid (according to specifications)
•Transmission filter (if applicable)
•Transmission pan gasket

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific transmission-related trouble codes.
2
Check transmission fluid level and condition; ensure fluid is at the proper level and not burnt or contaminated.
3
Inspect the transmission fluid cooler and lines for leaks or damage.
4
Examine the transmission control module (TCM) connections for corrosion or loose wiring.
5
Perform a visual inspection of the transmission for any signs of physical damage or leaks.
6
Test drive the vehicle to observe shifting behavior and monitor for any unusual sounds or performance issues.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface, and the engine is cool.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Addressing Transmission Fluid Issues

Sub-step 1: If the transmission fluid level is low, add the appropriate type of transmission fluid as specified in the owner’s manual.
Sub-step 2: If the fluid is burnt or contaminated, proceed to drain the old fluid.
- Use a socket set to remove the transmission pan bolts and lower the pan.
- Allow old fluid to drain completely and inspect for metal shavings or debris.
Sub-step 3: Replace the transmission filter if applicable.
- Remove the old filter and install a new one, ensuring it is seated properly.
Sub-step 4: Reinstall the transmission pan with a new gasket and torque the bolts to the manufacturer’s specifications.

3. Inspecting Electrical Connections

Sub-step 1: Reconnect the negative battery terminal.
Sub-step 2: Inspect the TCM wiring harness for any signs of wear or damage.
Sub-step 3: Clean connections with an electrical contact cleaner if corrosion is present.

4. Final Checks

Sub-step 1: Refill the transmission with the appropriate fluid type if it was drained.
Sub-step 2: Start the engine and allow it to reach operating temperature.
Sub-step 3: Cycle through all gears with the vehicle stationary to ensure proper fluid circulation.