2020 Ford F-150 Rattling Noise? Here's How to Fix It

How to Fix Rattling Noise

Experiencing a rattling noise in your 2020 Ford F-150 can be frustrating. It can be hard to determine the exact source of the noise, making diagnosis tricky. One of the reported areas of concern by owners is the fuse box. The good news is, with a bit of investigation, you can often pinpoint and address the rattle yourself. "Accidental 6x6 created by google street view is...wild On google street view," notes Linden4President, indicating that even unexpected things can sometimes be the source of unusual issues.

Symptoms

Rattling noises can manifest in various ways in your 2020 Ford F-150. Some owners describe it as a consistent vibration, while others experience it as an intermittent clatter. The intensity of the sound may also change depending on road conditions or vehicle speed. Pay close attention to when and where you hear the noise to help narrow down the source.

Specific areas where the rattling has been reported include the fuse box. The glovebox, the bed storage system and even inside the doors. The noises vary, from a low buzz to a distinct rattle. Describing the exact sound and conditions in which it occurs will be essential for both you and any mechanic assisting you.

These noises are more than just annoying; they can be indicative of loose components or potential issues. Ignoring these noises can sometimes lead to further damage, which will cost even more money. Early identification and repair is the most cost effective solution.

You may experience additional symptoms. For example, you might notice a tear in a component near the source of the noise. Other symptoms might be that it causes you to feel pain.

Most Likely Cause

Based on owner reports, a primary cause of rattling noise in the 2020 Ford F-150 is the fuse box. The fuse box contains numerous fuses and relays, which may become loose or vibrate against each other, generating a rattling sound. In some cases, the fuse box cover itself might not be properly secured, also creating noise.

Over time, the fuse box mounting points can also degrade, leading to increased movement and noise. This is especially true if the vehicle is frequently driven on rough roads or subjected to vibrations. Internal damage or loose wiring within the fuse box can also contribute to the problem.

It's important to note that while the fuse box is a common culprit, the specific source of the rattle could vary. Other components in the engine compartment or interior could also be responsible, requiring a more comprehensive inspection to pinpoint the exact location. The ignition could also cause these noises.

How to Diagnose

Diagnosing a rattling noise originating from the fuse box requires a systematic approach:

1. Gather Information: Ask yourself: When do you hear the rattle? Is it constant, or does it occur under specific conditions, like when hitting bumps or accelerating? Does it sound like plastic vibrating, or a metallic clatter?
2. Locate the Fuse Box: Consult your owner's manual to find the location of the fuse box(es) in your 2020 Ford F-150. There's usually one in the engine compartment and another inside the cabin.
3. Visual Inspection: Start by visually inspecting the fuse box. Look for any obvious signs of damage, loose connections, or missing fasteners. Make sure the cover is securely fastened.
4. Manual Check: With the vehicle stationary and the engine off, gently press on different parts of the fuse box. Try wiggling individual fuses and relays to see if you can replicate the rattling sound.
5. Sound Isolation: If you can't pinpoint the source with the engine off, start the engine and let it idle. Carefully listen near the fuse box to identify the exact area where the rattle is coming from. A mechanic's stethoscope can be helpful for isolating sounds.
6. Road Test: If the rattle only occurs while driving, conduct a controlled road test. Try different speeds and road surfaces to see if you can reproduce the noise consistently. Have a passenger assist with pinpointing the sound while you drive.
7. Wiring Check: Inspect the wiring harness connected to the fuse box. Ensure all connectors are firmly seated and that there are no loose or damaged wires. Gently tug on the wires to check for secure connections.
8. Professional Assistance: If you're unable to locate the source of the rattle, or if you suspect internal damage to the fuse box, consider seeking professional assistance from a qualified mechanic.

Tools you might need include:

• Mechanic's stethoscope
• Flashlight
• Screwdrivers
• Socket set
• Wiring tester (optional)

Step-by-Step Fix

Once you've identified the fuse box as the source of the rattling noise, here's a step-by-step guide to addressing the issue:

1. Safety First: Disconnect the negative terminal of your battery before working on the fuse box to prevent electrical shock or damage to the vehicle's electrical system.
2. Remove the Fuse Box Cover: Carefully remove the fuse box cover. Note the orientation of the cover and any clips or fasteners that need to be disengaged.
3. Inspect Fuses and Relays: Check each fuse and relay to ensure it's properly seated in its slot. Press down firmly on each one to make sure it's fully engaged. Replace any damaged or corroded fuses or relays.
4. Secure Loose Components: If you find any loose fuses or relays, use a small piece of foam or rubber to provide a snug fit and prevent vibration.
5. Address Wiring Issues: If you find any loose or damaged wires, repair or replace them as needed. Use electrical tape or heat shrink tubing to insulate any exposed wires. Ensure all connectors are securely fastened.
6. Secure the Fuse Box: If the fuse box itself is loose, tighten the mounting screws or bolts. If the mounting points are damaged, use shims or rubber washers to provide a more secure fit.
7. Apply Dampening Material: Apply foam or rubber dampening material to the inside of the fuse box cover to absorb vibrations and reduce noise. You can also apply dampening material to the fuse box housing.
8. Reassemble and Test: Reinstall the fuse box cover and reconnect the battery. Start the engine and let it idle. Listen carefully to see if the rattling noise is gone. Conduct a road test to confirm the repair.
9. Professional Inspection: If the rattling persists, consult a qualified mechanic for further diagnosis and repair.

As one owner shared, "Took my 2020 F-150 to dealer, cited TSB 19-2346 for transmission shudder. They did a complete fluid flush with the updated Mercon ULV fluid - FREE under warranty!" – TSBFixedIt. While not directly related to the fuse box, this shows the value of checking for technical service bulletins that may address similar issues.

Parts and Tools Needed

• Replacement fuses and relays (if needed) - Check your owner's manual for the correct type and amperage.
• Foam or rubber dampening material
• Electrical tape or heat shrink tubing
• Screwdrivers
• Socket set
• Mechanic's stethoscope (optional)

Real Owner Costs

The cost of addressing a rattling noise from the fuse box can vary depending on the severity of the issue and whether you choose to perform the repair yourself or take it to a mechanic. Here are some examples:

• DIY Repair: If the issue is simply loose fuses or relays, the cost could be as low as $10-$20 for replacement parts and dampening material.
• Professional Diagnosis: A mechanic might charge $50-$150 for diagnosing the rattling noise.
• Fuse Box Replacement: If the fuse box itself needs to be replaced, the cost could range from $200-$500, including parts and labor.
• Wiring Repair: If the issue involves damaged or loose wiring, the cost could range from $100-$300, depending on the extent of the damage.

Keep in mind that these are just estimates, and the actual cost could vary depending on your location and the specific shop you choose.

Prevention

Preventing rattling noises from the fuse box involves regular maintenance and inspection:

• Regular Inspection: Periodically inspect the fuse box for loose connections, damaged wires, and signs of corrosion.
• Secure Mounting: Ensure the fuse box is securely mounted and that the mounting points are in good condition.
• Proper Fuse Installation: When replacing fuses, make sure they are fully seated and of the correct type and amperage.
• Avoid Overloading Circuits: Avoid overloading electrical circuits, as this can cause excessive heat and damage to the fuse box.
• Dampening Material: Apply dampening material to the fuse box and cover to absorb vibrations and reduce noise.

What Owners Say

Real experiences from FORD owners:

Owner Experiences

"Accidental 6x6 created by google street view is...wild On google street view, makes me wonder if this has ever been done quick use of the googler machine and theres a bunch of course" — Linden4President (source)

"On google street view, makes me wonder if this has ever been done quick use of the googler machine and theres a bunch of course" — Linden4President (source)

"Took my 2020 F-150 to dealer, cited TSB 19-2346 for transmission shudder. They did a complete fluid flush with the updated Mercon ULV fluid - FREE under warranty!" — TSBFixedIt (source)

Pro Tips from Owners

💡 "If you're having this issue, get to the dealer ASAP before warranty ends. Pro tip: the shudder is caused by the clutch packs in the transmission." — TSBFixedIt (source)

Real Repair Costs

"I saw it at a dealership in Phoenix for $50,000, brand new… leather upholstery, 4x4. Seemed cheap to me for a modern truck." — AcuraIntegraTypeR (source)

FAQ

Q: How long does it take to fix a rattling noise from the fuse box?

A: The repair time can vary depending on the source and severity of the rattle. Simple fixes, such as tightening loose fuses or applying dampening material, can be completed in as little as 30 minutes. More complex repairs, such as replacing a damaged fuse box or repairing wiring, could take several hours.

Q: Can I drive with a rattling noise coming from the fuse box?

A: It's generally safe to drive with a rattling noise, but it's important to address the issue as soon as possible. The rattle could be a sign of a loose connection or damaged component, which could eventually lead to electrical problems or a fire hazard.

Q: Is this a common issue on the 2020 Ford F-150?

A: While not every 2020 Ford F-150 owner experiences rattling noises from the fuse box, it is a known issue that has been reported by some owners. Factors such as road conditions and driving habits can contribute to the problem.

Q: DIY vs mechanic - what's recommended?

A: If you're comfortable working on electrical systems and have some mechanical experience, you can attempt to diagnose and fix the rattling noise yourself. However, if you're unsure about any part of the process, it's best to seek professional assistance from a qualified mechanic. "Very good sir and nice truck. Still can't believe we cant get leather for a truck pushing 60k....actually I can." – askandhelpaccount, notes the common frustration.