To replace the battery in a 2018 Subaru key fob, use a CR2032 battery. First, remove the metal emergency key. Next, insert a flathead screwdriver into the seam to open the fob. Swap the battery, making sure the + side is facing up. Close the fob tightly. For more guidance, watch helpful videos or use visual aids.
Once opened, take note of the orientation of the old battery. Remove the depleted battery and discard it properly. Now, insert the new battery into the slot, ensuring it matches the original orientation. Press down gently until it fits snugly in place.
Next, reassemble the key fob by aligning the two halves. Snap them back together securely, ensuring there are no gaps. Finally, test your key fob by pressing a button to confirm that the new battery works.
Replacing your key fob battery is a straightforward process. Knowing how to do this can save you time and money. If you experience further issues with your key fob or have questions about other related tasks, you may want to explore additional maintenance tips for your 2018 Subaru. These tips can enhance your vehicle ownership experience.
Why Do You Need to Replace Your 2018 Subaru Key Fob Battery?
You need to replace your 2018 Subaru key fob battery when the fob begins to lose its functionality. A weak battery can prevent the fob from unlocking or starting your vehicle.
The American Automobile Association (AAA) categorizes a key fob as a remote control device that allows keyless entry and engine starting for vehicles. It relies on a battery to power its functions.
The underlying causes for needing a battery replacement include age, usage frequency, and environmental factors. Over time, all batteries lose charge due to chemical reactions within them. Frequent use of the fob accelerates this process. Additionally, extreme temperatures can also affect battery life.
Key fob batteries are typically coin cells, which are flat and round batteries. Each key fob contains a specific type of battery, commonly a CR2032. This battery type stores energy chemically and transfers it to the fob’s electronic components to enable functions like locking and unlocking doors.
Specific conditions contributing to battery drain include leaving the key fob inactive for extended periods and exposure to moisture or extreme temperatures. For example, using the fob repeatedly in high humidity can lead to corrosion, while constant exposure to cold can hasten battery depletion.
In summary, a key fob battery in your 2018 Subaru needs replacement due to natural aging and usage patterns. Understanding these factors helps maintain the functionality of your keyless entry system.
What Are the Symptoms of a Failing Key Fob Battery?
The symptoms of a failing key fob battery include unresponsive buttons, reduced range, and the need for multiple attempts to unlock the vehicle.
- Unresponsive buttons
- Reduced range
- Need for multiple attempts
- Warning lights on the dashboard
- Key fob not recognized by the vehicle
These symptoms can indicate varying issues, but they often cluster around battery depletion. Understanding these symptoms can help pinpoint whether the problem lies with the key fob battery or another issue entirely.
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Unresponsive Buttons:
Unresponsive buttons occur when the key fob no longer communicates with the vehicle. This often signifies a weak or dying battery. A study by the Consumer Reports in 2021 indicated that many users first notice this problem when pressing the unlock button yields no response. -
Reduced Range:
Reduced range refers to the diminishing distance from which the key fob can operate its functions. As the battery weakens, the signal strength decreases. According to a 2020 survey by the Automotive Research Association, owners reported a drop in effective distance from 30 feet to as few as 10 feet when the battery was almost depleted. -
Need for Multiple Attempts:
When users find themselves needing to press the key fob buttons multiple times, it often indicates battery failure. This symptom can lead to frustration and suggests that the fob is struggling to send signals to the vehicle’s receiver. A case study published by the International Automobile Association in 2019 emphasized how frequent retries can point to key fob battery issues. -
Warning Lights on the Dashboard:
Some vehicles display warning lights on the dashboard when the key fob battery is low. This can range from a simple “key fob low battery” alert to more complex messages. Manufacturer guidelines often state that these warnings serve as an early indicator of the need to replace the battery. -
Key Fob Not Recognized by the Vehicle:
In rare cases, a key fob may not be recognized by the vehicle at all. This issue can stem from a completely dead battery or potential damage to the fob. A comprehensive study conducted by AutoTech in 2022 noted that while physical damage is less common, it can exacerbate battery-related issues and lead to complete non-functionality.
Recognizing these symptoms early can save time and potential inconvenience. Replacing the key fob battery promptly may resolve these issues efficiently.
What Tools Are Necessary to Replace the Battery in a 2018 Subaru Key Fob?
To replace the battery in a 2018 Subaru key fob, you need specific tools. The necessary tools include a small flat-head screwdriver, a new battery, and optional tweezers for easier handling.
The main tools required are as follows:
1. Small flat-head screwdriver
2. New battery (CR2032)
3. Tweezers (optional)
Now, let’s examine each of these tools in detail.
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Small Flat-Head Screwdriver:
A small flat-head screwdriver assists in the key fob’s opening. This tool allows for a careful prying action to avoid damage. When using the screwdriver, insert it gently into the seam of the fob to separate the two halves. It is crucial to ensure you don’t apply too much force. For example, some users reported that using a plastic tool instead of metal can prevent scratching. -
New Battery (CR2032):
Replacing the old battery with a CR2032 lithium battery is essential. This type is widely available and has a voltage of 3V. It is suitable for key fobs due to its compact size and durability. Purchasing multiple batteries can be beneficial since they typically have a long shelf life. According to a report by Battery University, lithium batteries are effective in extreme temperatures, making them reliable for key fob applications. -
Tweezers (Optional):
Tweezers can help in handling the battery without getting fingerprints on it. This prevents oils from your skin from potentially disrupting the battery’s performance. While not strictly necessary, they can make the process cleaner and easier. Users who have opted to use tweezers have reported a more straightforward battery replacement experience.
In conclusion, you can successfully replace your 2018 Subaru key fob battery with a few simple tools.
Where Can You Find the Right Battery for a 2018 Subaru Key Fob?
You can find the right battery for a 2018 Subaru key fob at various locations. Start by checking your vehicle’s manual. It will specify the correct battery type, which is typically a CR2032 lithium coin cell. Next, visit an automotive store. These stores often carry key fob batteries, including the CR2032. You can also explore electronic retailers, which generally stock batteries suitable for key fobs. Additionally, consider online shopping platforms. Websites like Amazon or eBay offer a wide range of CR2032 batteries with convenient delivery options. Lastly, some Subaru dealerships provide batteries for key fobs. This ensures you get an original part designed specifically for your vehicle.
How Do You Safely Open the 2018 Subaru Key Fob?
To safely open the 2018 Subaru key fob, you should use a small flat tool to gently pry apart the two halves of the fob. Follow these steps to ensure you do it correctly:
- Locate the small notch: Look for a slot or notch on the side of the key fob. This is where you will insert the flat tool.
- Insert the tool: Use a small flathead screwdriver or a similar tool. Gently insert it into the notch, being careful not to apply too much force, which could damage the fob.
- Pry the two halves apart: Carefully twist the tool slightly to create a gap. Gradually work your way around the fob to separate the two halves evenly.
- Remove the battery: Once the fob is open, locate the battery. It will be a circular, flat battery. Note its orientation before removing it so you can install the new one correctly.
- Replace with a new battery: Insert the new battery in the same position as the old one. A common battery type for key fobs is CR2032.
- Reassemble the fob: Align the two halves of the fob and press them together firmly until they click into place.
Following these steps will help you open your 2018 Subaru key fob safely and replace the battery without causing damage.
What Should You Avoid When Opening Your Key Fob?
When opening your key fob, you should avoid damaging the circuit board, using excessive force, and exposing it to moisture.
- Damaging the circuit board
- Using excessive force
- Exposing it to moisture
Avoiding these mistakes is essential for maintaining the functionality of your key fob.
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Damaging the circuit board: Damaging the circuit board occurs when you inadvertently bend, scratch, or break the delicate components during the opening process. The circuit board houses the electronic parts that communicate with your car. A damaged board may result in the key fob becoming inoperable and unable to sync with the vehicle. For example, mishandling a circuit board can lead to broken connections, rendering the key fob useless without costly repairs or replacements.
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Using excessive force: Using excessive force means applying too much pressure when trying to open the key fob. Key fobs are typically designed with clips or small grooves for easy opening. Forcing them apart can break these clips and create gaps, allowing dirt and moisture to enter. A 2012 study by AutoTech reported that many key fobs returned for replacement were damaged primarily due to improper opening methods.
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Exposing it to moisture: Exposing it to moisture occurs when liquid enters the key fob, leading to potential short-circuits and damage. Most key fobs are not waterproof. If moisture seeps into the internal components, it can corrode the electronic parts or cause them to malfunction. According to a 2019 report by TechSecure, moisture damage is one of the leading causes for key fob failures, affecting over 10% of users who inadvertently exposed their fobs to rain or spills.
What Steps Should You Follow to Replace the Battery in Your 2018 Subaru Key Fob?
To replace the battery in your 2018 Subaru key fob, follow these steps: Get the right battery type, open the key fob, remove the old battery, insert the new battery, and finally close the key fob securely.
- Get the right battery type.
- Open the key fob.
- Remove the old battery.
- Insert the new battery.
- Close the key fob securely.
Understanding these steps will help ensure a smooth battery replacement process.
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Get the right battery type: To replace the battery, you first need to determine the specific type required for your key fob. The 2018 Subaru key fob typically uses a CR2032 or similar lithium battery. This small, round battery is widely available in most electronics or automotive stores.
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Open the key fob: Opening your key fob involves finding the seam on its sides. You can use a small flathead screwdriver or a fingernail to gently pry it apart, being careful not to damage the plastic casing. If your fob has a metal key inside, you may need to remove it first.
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Remove the old battery: Once you have the key fob open, look for the battery compartment. Carefully lift the old battery out, noting its orientation. Correct orientation is crucial for installing the new battery, ensuring that the positive (+) side faces the correct direction.
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Insert the new battery: Insert the new battery into the compartment, making sure it is placed in the same orientation as the old battery. You should hear a slight click or feel it seat firmly in place when done correctly.
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Close the key fob securely: Finally, align the two halves of the key fob and press them together until you hear a snap. Ensure the fob is securely closed and check that all buttons function properly.
By following these steps, you can easily replace your key fob battery and ensure your keyless entry system operates effectively.
How Can You Ensure Proper Installation of the New Battery?
To ensure proper installation of a new battery, follow these steps: read the manufacturer’s instructions, use the correct battery type, handle the battery carefully, install it in the correct orientation, and test the device after installation.
Reading the manufacturer’s instructions is crucial. These instructions provide specific steps tailored to the device you are working on. They often include details about the type of battery required and how to safely access the battery compartment.
Using the correct battery type is essential. Many devices specify battery size and chemistry, such as alkaline or lithium. Incorrect battery use can damage the device or lead to poor performance. A guideline by the National Electrical Manufacturers Association (NEMA, 2020) suggests always checking compatibility to avoid issues.
Handling the battery carefully is important. Batteries can be sensitive to physical shock and moisture. Dropping or exposing a battery to water can lead to leakage or reduced lifespan. Therefore, always handle batteries with clean, dry hands and avoid touching terminals directly.
Installing the battery in the correct orientation is necessary for functionality. Most batteries have a plus (+) and minus (-) symbol indicating positive and negative ends. Installing the battery backward can damage the device or prevent it from working.
Testing the device after installation is a final step to ensure everything is functioning properly. Turn on the device and verify that it operates as expected. If it does not power on, check the battery placement and connections again.
By following these steps, you can ensure the new battery is installed correctly and efficiently, maximizing the performance and lifespan of your device.
How Can You Test the New Battery Functionality After Replacement?
You can test the new battery functionality after replacement by following specific steps to ensure the battery works properly in your device.
First, ensure the battery is installed correctly. Check the orientation of the battery; it should match the positive (+) and negative (-) terminals indicated in the compartment. If the battery is inserted incorrectly, the device will not function.
Next, power on the device. For most devices, this usually involves pressing the primary button to see if it activates. If the device powers on, the battery is likely functioning correctly.
After that, check the responsiveness of all functions. Test all buttons or features of the device to ensure every part is working. For example, if it’s a remote, try to use every button. Inconsistent responses may indicate a weak battery or improper installation.
Additionally, observe the battery life. Monitor how long the device operates after replacement. If the battery lasts significantly shorter than expected, it may be a sign of a defective battery. Research by Consumer Reports (2022) shows that reliable batteries should last several months to a few years, depending on usage.
Finally, consider using a multimeter. A multimeter measures the voltage of the battery. If you are familiar with this tool, set it to measure DC voltage and touch the probes to the battery terminals. A healthy battery should show a voltage close to its rated voltage. For example, a standard AA battery rated at 1.5 volts should read around that value.
By following these steps, you can confirm that the battery is functioning properly after replacement.
What Precautions Should You Take When Handling Your Key Fob Battery?
When handling your key fob battery, take several important precautions to ensure safety and functionality.
- Wear gloves when handling the battery.
- Avoid touching the battery terminals.
- Keep the battery away from children and pets.
- Store the battery in a cool, dry place.
- Dispose of old batteries properly.
These precautions help maintain safety and prevent damage to the key fob. Understanding the reasons behind each precaution enhances overall battery handling practices.
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Wearing Gloves: Wearing gloves when handling the battery protects both your skin and the battery terminals from dirt and oil. Even a small amount of residue can affect the battery’s performance. Additionally, gloves can prevent potential acid burns from leaking batteries.
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Avoiding Touching the Battery Terminals: Avoiding contact with battery terminals prevents oxidation and corrosion. Oils and moisture from fingers can create unwanted residue. This residue can lead to poor connections and reduce the battery life.
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Keeping Battery Away from Children and Pets: Keeping batteries away from children and pets prevents accidental ingestion. Lithium batteries can be harmful if swallowed, leading to serious health issues. Safe storage measures should always be a priority.
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Storing in a Cool, Dry Place: Storing batteries in a cool and dry area can extend their shelf life. High temperatures can lead to battery leakage, while humidity can cause corrosion. The general recommendation is to store batteries in a temperature range of 10-25°C (50-77°F).
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Proper Disposal of Old Batteries: Proper disposal of batteries is crucial for environmental safety. Many localities have specific recycling programs for battery disposal. Following these regulations helps reduce harmful waste and promotes a greener planet.
In conclusion, adhering to these key precautions when handling your key fob battery can enhance safety and prolong the battery’s functionality.
What Are the Environmental Considerations for Key Fob Battery Disposal?
The environmental considerations for key fob battery disposal include the proper handling of toxic materials and the promotion of recycling initiatives.
- Toxic materials
- Recycling programs
- Environmental regulations
- Public awareness
- Alternative battery options
Understanding these considerations is crucial for minimizing environmental impact while ensuring compliance with regulations.
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Toxic Materials: Toxic materials are found in many batteries, including lithium, cadmium, and lead. These substances can cause environmental harm if not disposed of properly. The Environmental Protection Agency (EPA) highlights that improper disposal can lead to soil and water contamination. For example, lead-acid batteries can release lead into the ecosystem, posing risks to wildlife and human health.
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Recycling Programs: Recycling programs for batteries aim to recover valuable materials and reduce waste. Many retailers and municipalities offer battery recycling bins. The Rechargeable Battery Recycling Corporation (RBRC) reports that recycling can recover over 90% of battery materials. This reduces the demand for raw materials and minimizes landfill contributions.
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Environmental Regulations: Governments have set regulations for battery disposal to protect the environment. The Resource Conservation and Recovery Act (RCRA) governs the disposal of hazardous waste, including certain batteries. Compliance ensures safe handling and mitigates ecological damage.
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Public Awareness: Public awareness campaigns educate individuals about safe battery disposal. Organizations like Earth911 and local environmental groups promote methods to dispose of key fob batteries responsibly. Increased awareness can lead to higher participation in recycling initiatives.
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Alternative Battery Options: Alternative battery options, such as rechargeable batteries, can reduce environmental impact. These batteries often have a lower lifecycle footprint. Studies by the Battery University indicate that the use of rechargeable batteries can lead to a significant reduction in waste and pollution.
Addressing these considerations ensures responsible disposal of key fob batteries, protecting both the environment and human health.
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