how to fix a Ford F-150 13th Generation (2015-2020) that won’t shift into gear?

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

590 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 issues in Ford F-150 13th Generation (2015-2020). Step-by-step guide with symptoms, diagnostics, and solutions.

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 the engine to cool before opening the transmission system.

Symptoms

•Transmission warning light illuminated
•Engine revs without acceleration
•Gear selector moves but does not engage the transmission
•Grinding noise when attempting to shift
•Fluid leaks underneath the vehicle
•Unusual vibrations from the transmission area

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition; look for discoloration or a burnt smell.
3
Inspect the gear shift linkage for any signs of damage or disconnection.
4
Examine the transmission fluid lines for leaks or blockages.
5
Test the battery voltage and connections; low voltage can affect shifting.
6
Check for any blown fuses related to the transmission control module.

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
•Wrench set
•Screwdriver

Parts Required

•Transmission fluid (specific to Ford specifications)
•Transmission filter (if applicable)
•Gasket for transmission pan
•Transmission Control Module (if required)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition; look for discoloration or a burnt smell.
3
Inspect the gear shift linkage for any signs of damage or disconnection.
4
Examine the transmission fluid lines for leaks or blockages.
5
Test the battery voltage and connections; low voltage can affect shifting.
6
Check for any blown fuses related to the transmission control module.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Tools Required: Transmission fluid pump, funnel, socket set
Remove the transmission dipstick and check fluid level.
If low, add the appropriate type of transmission fluid (consult owner's manual for specifications).
If fluid is burnt or contaminated, drain the transmission fluid:
1. Place a drain pan underneath the transmission.
2. Remove the transmission pan bolts and carefully lower the pan.
3. Allow the old fluid to drain completely.
4. Replace the fluid filter if equipped.
5. Reinstall the pan with a new gasket and torque bolts to specifications.

3. Inspect and Adjust Gear Shift Linkage

Tools Required: Wrench set, screwdriver
Locate the gear shift linkage at the transmission.
Inspect for any loose connections or damaged components.
Adjust the linkage if necessary:
1. Loosen the adjustment nuts.
2. Align the linkage to the correct position as per the service manual.
3. Tighten the nuts securely.

4. Check and Replace Transmission Control Module (if necessary)

Tools Required: OBD-II scanner, socket set
Using the OBD-II scanner, check for fault codes related to the transmission control module (TCM).
If a fault is detected, further tests may be needed to confirm TCM failure.
If replacement is necessary:
1. Disconnect the battery.
2. Remove the old TCM by unscrewing the mounting bolts.
3. Disconnect the wiring harness.
4. Install the new TCM by reversing the removal steps and ensuring tight connections.