How to Turn Off Back Seat Seatbelt Alarm in a Subaru

Turning off the back seat seatbelt alarm in a Subaru can be helpful in certain situations, like transporting heavy cargo or using child seats. While the alarm is designed for safety, there are legitimate reasons to disable it temporarily—and doing so correctly ensures you stay compliant with local laws and maintain vehicle functionality.

Key Takeaways

• Understand the purpose of the seatbelt alarm: It’s a safety feature meant to encourage seatbelt use, especially for passengers in the rear seats.
• Check your local laws first: In many areas, disabling seatbelt alarms is legal only under specific conditions, such as using approved child restraints or carrying cargo.
• Use the Subaru Multi-Use Display (M.U.D.) or dashboard controls: Most modern Subarus allow temporary deactivation through the vehicle settings menu.
• Consider using a seatbelt clip or extender: These can simulate a buckled seatbelt and silence the alarm without altering vehicle settings.
• Avoid permanent modifications: Cutting wires or disabling sensors can void warranties and compromise safety systems like airbags.
• Re-enable the alarm when no longer needed: Always restore normal operation once the reason for disabling it has passed.
• Consult your owner’s manual: Subaru provides model-specific instructions that should always be your first reference.

Why Does My Subaru Have a Back Seat Seatbelt Alarm?

If you’ve ever driven a Subaru with passengers in the back—or even placed a heavy bag on the rear seat—you may have heard an annoying chime and seen a warning light on the dashboard. That’s the back seat seatbelt alarm, and it’s there for a good reason: safety.

Subaru, like many automakers, has implemented advanced occupant detection systems to promote seatbelt use. The rear seatbelt reminder system monitors whether seatbelts are fastened in the back seats. If the system detects weight on a seat and the corresponding seatbelt isn’t buckled, it triggers an audible alert and a visual warning on the instrument cluster. This feature became standard in most Subaru models starting around 2015, including popular vehicles like the Outback, Forester, Crosstrek, and Ascent.

While this system helps reduce injuries in the event of a crash, it can be inconvenient in everyday situations. For example, you might be carrying groceries, luggage, or a pet carrier in the back seat. Or perhaps you’re using a child safety seat that doesn’t require the seatbelt to be fastened because it uses the LATCH system. In these cases, the alarm can become a constant distraction.

Understanding why the alarm exists is the first step to managing it responsibly. It’s not just a nuisance—it’s part of Subaru’s commitment to passenger safety. But that doesn’t mean you can’t temporarily disable it when appropriate. The key is knowing how to do it safely, legally, and without damaging your vehicle.

Is It Legal to Disable the Back Seat Seatbelt Alarm?

Before you consider turning off the alarm, it’s important to know the legal landscape. In the United States, federal law does not prohibit disabling seatbelt alarms, but state laws vary widely. Some states allow it under certain conditions, while others consider it a violation of vehicle safety regulations.

For instance, in California, it’s legal to disable a seatbelt alarm as long as the vehicle still meets federal safety standards and the modification doesn’t interfere with airbag deployment. However, in states like New York and Illinois, tampering with safety systems can result in fines or failed inspections. Always check your local Department of Motor Vehicles (DMV) or equivalent agency for up-to-date regulations.

Additionally, insurance companies may view unauthorized modifications as a risk factor. If an accident occurs and it’s discovered that safety systems were altered, your claim could be affected. That’s why it’s crucial to use only manufacturer-approved methods or temporary workarounds.

The safest approach is to disable the alarm only when necessary—such as when using a child seat or transporting cargo—and to re-enable it as soon as possible. This ensures you remain compliant with the law and maintain the integrity of your vehicle’s safety systems.

How to Turn Off the Back Seat Seatbelt Alarm Using Subaru’s Built-In Settings

The easiest and most reliable way to disable the back seat seatbelt alarm in a Subaru is through the vehicle’s built-in settings menu. Most Subaru models from 2015 onward come equipped with a Multi-Use Display (M.U.D.) or a similar infotainment system that allows you to customize safety alerts.

Step-by-Step Guide for Models with Multi-Use Display (M.U.D.)

1. Start your vehicle and ensure the ignition is on. You don’t need to be driving—just have the engine running or the key in the “on” position.

2. Press the “Home” button on your steering wheel or touchscreen to access the main menu.

3. Navigate to “Settings” using the directional pad or touchscreen.

4. Select “Vehicle” from the settings menu. This section contains options related to safety, lighting, and driver assistance features.

5. Look for “Seatbelt Reminder” or “Rear Seatbelt Alert”. The exact wording may vary by model and year.

6. Toggle the setting to “Off” for the rear seats. Some models allow you to disable the alert for individual seats (e.g., left rear, right rear, center).

7. Confirm your selection and exit the menu. The change should take effect immediately.

This method is temporary and will reset the next time you turn off the vehicle. That means you’ll need to repeat the process if you want to disable the alarm again. It’s a safe, reversible solution that doesn’t require any tools or modifications.

Models Without Touchscreen: Using Steering Wheel Controls

If your Subaru doesn’t have a touchscreen (such as older Forester or Impreza models), you can still access the settings using the steering wheel controls.

1. Press the “Info” or “Menu” button on your steering wheel to cycle through the dashboard displays.

2. Navigate to the “Settings” menu using the arrow buttons.

3. Scroll to “Vehicle Settings” and press “OK” or “Enter.”

4. Find “Seatbelt Reminder” and select it.

5. Choose “Rear” and set it to “Off.”

6. Exit the menu by pressing the “Back” or “Cancel” button.

This method works on most Subaru models with a digital instrument cluster, including the 2017–2020 Outback and Legacy. Always refer to your owner’s manual for model-specific instructions, as menu layouts can differ slightly.

Alternative Methods: Seatbelt Clips and Extenders

If you can’t access the settings menu or prefer a quicker fix, seatbelt clips or extenders can be a practical alternative. These devices simulate a buckled seatbelt by completing the circuit in the seatbelt buckle, effectively silencing the alarm.

How Seatbelt Clips Work

A seatbelt clip is a small plastic or metal device that plugs into the seatbelt buckle. When inserted, it tricks the vehicle’s sensor into thinking the seatbelt is fastened. This stops the chime and warning light without disabling the entire system.

These clips are widely available online and in auto parts stores. They’re inexpensive—usually under $10—and easy to use. Simply insert the clip into the buckle of the seat where you want to disable the alarm. Remove it when you no longer need it.

Using Seatbelt Extenders

Seatbelt extenders are longer versions of the standard seatbelt latch. They’re often used by people who find factory seatbelts too short. However, they can also be used to silence the alarm by providing a buckled connection even when the seat is empty.

Extenders must be compatible with your Subaru’s seatbelt system. Look for OEM (Original Equipment Manufacturer) or certified aftermarket extenders that meet FMVSS 209 safety standards. Avoid cheap, uncertified products, as they may not function properly in a crash.

Pros and Cons of Clips and Extenders

Pros:

• Quick and easy to install
• No need to access vehicle settings
• Reusable and portable
• Affordable

Cons:

• May not work on all Subaru models (some have advanced sensors)
• Could interfere with airbag deployment if used incorrectly
• Not a permanent solution—must be removed for passengers
• Some insurers may view them as tampering

Always use these devices responsibly. Never leave a clip in place when a passenger is sitting in the seat without a seatbelt. This defeats the purpose of the safety system and puts lives at risk.

What Not to Do: Avoiding Common Mistakes

While it’s tempting to find a quick fix, some methods of disabling the seatbelt alarm can do more harm than good. Here are common mistakes to avoid:

Cutting or Disconnecting Wires

Some people attempt to disable the alarm by cutting the wires connected to the seatbelt sensor. This is dangerous and strongly discouraged. Doing so can:

• Void your vehicle’s warranty
• Disable airbag systems that rely on seat occupancy sensors
• Trigger error codes in the vehicle’s computer
• Cause the check engine light or airbag warning light to stay on

Modern Subarus use sophisticated sensor networks. Tampering with one component can affect others, leading to costly repairs and reduced safety.

Using Unapproved Aftermarket Devices

Avoid “seatbelt alarm eliminators” sold online that claim to permanently disable the system. Many of these devices are not tested for safety and may not be compatible with your vehicle. They can also interfere with Subaru’s EyeSight driver assistance system, which relies on accurate sensor data.

Ignoring the Owner’s Manual

Your Subaru’s owner’s manual is the best source of information. It contains model-specific instructions for disabling alerts, warranty details, and safety warnings. Skipping this step can lead to incorrect procedures or unintended consequences.

Leaving the Alarm Off Permanently

Even if you find a way to disable the alarm permanently, it’s not advisable. The seatbelt reminder system exists to protect passengers. Disabling it long-term increases the risk of injury in an accident and may violate safety regulations.

Always re-enable the alarm when it’s no longer needed. Make it a habit to check your settings after transporting cargo or using child seats.

Model-Specific Tips for Popular Subaru Vehicles

Subaru’s seatbelt alarm system varies slightly between models and model years. Here’s a quick guide to help you navigate the process based on your vehicle.

Subaru Outback (2015–2024)

The Outback uses the Multi-Use Display system. To disable the rear seatbelt alarm:

• Go to Settings > Vehicle > Seatbelt Reminder
• Select Rear and toggle to Off
• The setting resets after each ignition cycle

Note: The 2021+ Outback with the updated STARLINK system may have the option under Driver Assistance > Seatbelt Reminder.

Subaru Forester (2014–2024)

The Forester follows a similar process. Use the steering wheel controls to access:

• Menu > Vehicle Settings > Seatbelt Reminder
• Choose Rear and set to Off

On 2022+ models with the larger touchscreen, the menu may be under Settings > Safety > Seatbelt Alerts.

Subaru Crosstrek (2013–2024)

The Crosstrek’s process is nearly identical to the Forester. Use the steering wheel or touchscreen to navigate to the seatbelt reminder settings. The alarm can be disabled for individual rear seats.

Subaru Ascent (2019–2024)

As a three-row SUV, the Ascent allows you to disable the alarm for the second and third rows separately. Access the settings via the central touchscreen:

• Settings > Vehicle > Seatbelt Reminder
• Select Second Row or Third Row and turn off

This is especially useful when carrying cargo in the third row or using LATCH-compatible car seats.

Older Models (Pre-2015)

Vehicles like the 2010–2014 Legacy or Impreza may not have a digital menu option. In these cases, the alarm may not be user-disabled. You may need to use a seatbelt clip or consult a Subaru dealer for assistance.

Always check your owner’s manual or contact Subaru customer service if you’re unsure. They can provide guidance based on your VIN and model year.

When Should You Disable the Back Seat Seatbelt Alarm?

Disabling the alarm should be a temporary measure, used only in specific situations. Here are common scenarios where it’s appropriate:

Transporting Heavy Cargo

If you’re moving furniture, luggage, or other heavy items in the back seat, the weight can trigger the alarm. Disabling it prevents constant beeping while you drive.

Using Child Safety Seats with LATCH

Many modern car seats use the LATCH (Lower Anchors and Tethers for Children) system instead of the seatbelt. Since the seatbelt isn’t used, the alarm may sound. Temporarily disabling it avoids distraction.

Carrying Pets in Crates

Pet carriers placed on the rear seat can activate the sensor. If your pet isn’t restrained by a seatbelt, the alarm may go off. Disabling it keeps the ride calm for both you and your pet.

Passenger with Medical Conditions

In rare cases, a passenger may have a medical condition that makes wearing a seatbelt unsafe. Consult a doctor and consider using a medical exemption seatbelt extender. Disable the alarm only with professional guidance.

In all cases, re-enable the alarm as soon as the situation changes. Safety should always come first.

Conclusion: Balance Convenience and Safety

The back seat seatbelt alarm in your Subaru is a valuable safety feature designed to protect passengers. While it can be inconvenient at times, it plays a crucial role in reducing injuries during accidents. Disabling it should be done thoughtfully, legally, and only when necessary.

Using Subaru’s built-in settings menu is the safest and most reliable method. It’s reversible, doesn’t require tools, and keeps your vehicle’s systems intact. Seatbelt clips and extenders offer a quick alternative but should be used with caution.

Avoid permanent modifications or unapproved devices that could compromise safety or void your warranty. Always consult your owner’s manual and check local laws before making any changes.

By following these guidelines, you can enjoy the convenience of a quiet cabin when needed—without sacrificing the protection that seatbelts and Subaru’s safety systems provide. Remember: the goal isn’t to eliminate the alarm forever, but to manage it wisely.

Frequently Asked Questions

Can I permanently disable the back seat seatbelt alarm in my Subaru?

Subaru does not provide a factory option to permanently disable the seatbelt alarm. Most models only allow temporary deactivation through the settings menu, which resets after each ignition cycle. Permanent modifications are not recommended and may violate safety regulations.

Will disabling the seatbelt alarm affect my airbags?

No, disabling the alarm through the vehicle settings or using a seatbelt clip should not affect airbag deployment. However, cutting wires or tampering with sensors can interfere with occupant detection systems and potentially disable airbags. Always use approved methods.

Why does my Subaru alarm go off when there’s no one in the back seat?

The alarm may trigger if there’s weight on the seat, such as a heavy bag, pet carrier, or child seat. The system detects occupancy and expects the seatbelt to be fastened. Removing the weight or disabling the alarm temporarily can resolve the issue.

Do I need a special tool to turn off the seatbelt alarm?

No special tools are needed. Most Subaru models allow you to disable the alarm using the steering wheel controls or touchscreen menu. Seatbelt clips require no tools at all—just plug them into the buckle.

Is it safe to use a seatbelt clip to silence the alarm?

Seatbelt clips are generally safe for temporary use when no passenger is present. However, never use a clip if someone is sitting in the seat without a seatbelt. This defeats the safety system and increases injury risk in a crash.

What should I do if the alarm won’t turn off?

First, check that no objects are pressing on the seat. Then, consult your owner’s manual for model-specific instructions. If the issue persists, visit a Subaru dealer—there may be a sensor malfunction or software glitch that requires professional diagnosis.