my Ford F-150 13th Generation (2015-2020) won't shift into gear what to check

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

557 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 shifting issues in Ford F-150 2015-2020. 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 engine to cool before opening the transmission fluid fill plug.

Symptoms

•Transmission warning light illuminated on the dashboard
•Engine revs without significant acceleration (slipping)
•Difficulty shifting between gears (stuck in neutral)
•Unusual noises from the transmission (grinding or whining)
•Fluid leaks under the vehicle
•Check engine light activated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect the transmission fluid level and condition; look for contamination or dark fluid.
3
Check the transmission fluid lines for leaks or damage.
4
Test the battery voltage and connections, ensuring they are not affecting the electronic control unit (ECU).
5
Inspect the shift linkage for any visible damage or misalignment.
6
Check for blown fuses related to the transmission control module (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
•Transmission fluid pump
•Socket set
•Fluid catch pan
•Wrench set
•Screwdriver set

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter (if applicable)
•Transmission Control Module (if found faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect the transmission fluid level and condition; look for contamination or dark fluid.
3
Check the transmission fluid lines for leaks or damage.
4
Test the battery voltage and connections, ensuring they are not affecting the electronic control unit (ECU).
5
Inspect the shift linkage for any visible damage or misalignment.
6
Check for blown fuses related to the transmission control module (TCM).

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and secure it with wheel chocks.
Disconnect the battery to ensure safety during electrical inspections.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and check the fluid level; add fluid if low.
2. If the fluid is dark or has a burnt smell, drain the old fluid from the transmission pan.
3. Replace the transmission filter if applicable.
4. Refill the transmission with the manufacturer-recommended fluid type (typically Mercon LV).
Tools Required: Transmission fluid pump, socket set, fluid catch pan.

3. Inspect and Repair Shift Linkage

Sub-steps:
1. Locate the shift linkage and visually inspect for damage or misalignment.
2. Adjust the linkage as necessary to ensure proper alignment with the transmission.
3. Tighten any loose connections.
Tools Required: Wrench set.

4. Replace Faulty Transmission Control Module (if necessary)

Sub-steps:
1. Disconnect the battery.
2. Remove the TCM from its mounting location.
3. Install the new TCM in reverse order, ensuring all connectors are securely attached.
4. Reconnect the battery.
Tools Required: Socket set, screwdriver set.

5. Clear Diagnostic Codes

Sub-steps:
1. Use the OBD-II scanner to clear any diagnostic trouble codes after repairs are made.
2. Re-scan to ensure no new codes appear.
Tools Required: OBD-II scanner.