my Ford F-150 13th Generation (2015-2020) won’t go into gear what could be the issue

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

532 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 2015-2020. 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 components.
•Allow the engine to cool before checking or replacing transmission fluid.

Symptoms

•Gear shift lever not responding
•Warning lights on the dashboard (e.g., transmission light)
•Engine revs without vehicle movement
•Unusual noises coming from the transmission area
•Fluid leaks under the vehicle
•Transmission slipping during operation

Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle’s onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
3
Inspect the gear shift linkage for any visible damage or disconnection.
4
Verify electrical connections to the transmission control module (TCM).
5
Test the brake light switch to ensure it's functioning properly.
6
Perform a pressure test on the transmission to check for internal 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
•Funnel
•Transmission fluid pump
•Pliers
•Screwdriver

Parts Required

•Transmission fluid (Ford Mercon LV)
•Brake light switch (if faulty)
•Any damaged linkage components (if applicable)

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Diagnostic Steps

1
Check the transmission fluid level and condition using the dipstick.
2
Scan the vehicle’s onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
3
Inspect the gear shift linkage for any visible damage or disconnection.
4
Verify electrical connections to the transmission control module (TCM).
5
Test the brake light switch to ensure it's functioning properly.
6
Perform a pressure test on the transmission to check for internal issues.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is on a level surface and the parking brake is engaged.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Wipe the dipstick clean and reinsert it to check fluid level.
3. If low, add the recommended transmission fluid (Ford Mercon LV).
4. If fluid is burnt or dirty, proceed to replace it.
Tools Required: Funnel, transmission fluid pump.

3. Inspect and Adjust Gear Shift Linkage

Sub-steps:
1. Remove the cover from the gear shift assembly.
2. Inspect the linkage for any signs of wear or disconnection.
3. Adjust the linkage as necessary to ensure proper alignment.
4. Reassemble the gear shift cover.
Tools Required: Socket set, pliers.

4. Replace Faulty Brake Light Switch

Sub-steps:
1. Locate the brake light switch near the brake pedal.
2. Disconnect the electrical connector from the switch.
3. Remove the switch from its mounting bracket.
4. Install the new brake light switch and reconnect the electrical connector.
Tools Required: Socket set, screwdriver.

5. Reconnect Battery and Test

Sub-steps:
1. Reconnect the negative battery terminal.
2. Start the engine and test the transmission by attempting to shift through the gears.
3. Monitor for any warning lights on the dashboard.
Tools Required: None.