The process of replacing the power cell within a Subaru keyless entry remote is a common maintenance task. This procedure ensures the continued functionality of the remote, allowing for convenient locking, unlocking, and starting of the vehicle. A depleted battery can result in inconsistent or complete failure of the remote’s features.
Maintaining a functional key fob is essential for vehicle security and convenience. A working remote allows for quick access to the vehicle, remote start capabilities (if equipped), and panic alarm activation. Understanding the replacement steps prevents potential issues caused by a non-operational remote, such as being locked out of the car or unable to start it remotely. The need for battery replacement arises due to the natural depletion of the power source over time and use.
The following sections will provide a detailed guide to replacing the battery in various Subaru key fob models, outlining the necessary tools, step-by-step instructions, and considerations for different fob designs. This information will empower vehicle owners to perform this task efficiently and effectively.
1. Tools Required
The successful completion of battery replacement within a Subaru key fob is contingent upon having the appropriate tools. The tools required facilitate the safe and efficient disassembly of the fob casing and extraction of the depleted battery. The absence of proper tools can result in damage to the fob’s plastic housing or delicate internal components, leading to functional impairment or complete failure. A small, flat-head screwdriver or a plastic pry tool is typically necessary to separate the fob halves without causing cosmetic or structural damage. Furthermore, the improper use of metallic tools can create a short circuit, potentially harming the electronic components of the fob.
Specific tool requirements vary depending on the Subaru key fob model. Older models often require only a small screwdriver, while newer or more complex designs may benefit from specialized plastic opening tools. These tools are designed to minimize the risk of scratching or breaking the plastic casing. The availability and correct application of these tools directly impact the ease and effectiveness of the battery replacement process. A clean, static-free work surface is also essential to prevent damage from electrostatic discharge to the internal circuitry during the procedure.
In summary, the selection and proper utilization of tools represent a fundamental step in replacing a Subaru key fob battery. Appropriate tools ensure the fob can be disassembled safely, the battery replaced without causing damage, and the fob reassembled securely. The use of inadequate tools poses a significant risk of compromising the fob’s functionality, thereby emphasizing the importance of careful preparation and the use of correct implements.
2. Battery Type
The successful execution of the battery replacement procedure in a Subaru key fob hinges critically on identifying and utilizing the correct battery type. Using an incorrect battery type can lead to a complete failure of the key fob or, in certain circumstances, damage to its internal components. The relationship between battery type and the replacement process is causal: selecting the correct battery is a necessary precursor to proper fob functionality following the replacement. For example, the ubiquitous CR2032 battery is commonly specified for many Subaru key fobs; substituting this with a different voltage or form factor battery would render the remote inoperable. The “how to change battery in subaru key fob” process, therefore, is intrinsically tied to the correct battery specification.
Practical application of this knowledge manifests in several ways. Before initiating the replacement, the owner’s manual or the markings inside the key fob itself must be consulted to ascertain the appropriate battery type. Failure to do so may result in the purchase and attempted installation of an incompatible power source. Furthermore, understanding the battery type enables the user to source a replacement from a reputable vendor, ensuring both quality and reliability. A compromised battery, even if physically compatible, may have a shortened lifespan or provide insufficient power, thus negating the benefits of the replacement effort. The cost associated with incorrect battery type installation can range from non-functionality to permanent damage to the fob’s electronics.
In summary, the correct battery type is not merely a component of the battery replacement process; it is a foundational element. Without accurate identification and selection, the entire procedure is likely to fail, resulting in inconvenience and potential expense. Adherence to the specified battery type, coupled with careful execution of the replacement steps, is paramount to restoring the Subaru key fob’s functionality and ensuring its continued operation.
3. Fob Disassembly
Fob disassembly constitutes a critical, often delicate, step in replacing a battery within a Subaru key fob. Its direct impact on the success of the battery change is undeniable; improper disassembly can result in physical damage to the fob casing or internal electronic components, thereby rendering the device inoperable. The “how to change battery in subaru key fob” process is fundamentally predicated on the ability to access the battery compartment through careful and methodical disassembly. For instance, attempting to force open a securely sealed fob could fracture the plastic housing or dislodge sensitive circuitry. Successful completion of this stage directly enables the subsequent steps of battery removal and replacement.
Practical application of this understanding requires adherence to specific techniques. Typically, a small, flat-head screwdriver or a specialized plastic pry tool is employed to gently separate the fob halves. The precise location of the separation point varies between different Subaru models, necessitating prior research or consultation of the vehicle’s owner’s manual. A failure to identify this point accurately may lead to unnecessary force being applied, increasing the risk of damage. Furthermore, the presence of small screws, locking tabs, or intricate internal arrangements demands meticulous attention to detail during disassembly. Recording the orientation of components as they are separated can aid in reassembly, preventing errors that might impede functionality.
In summary, fob disassembly is not merely a preliminary step, but an integral component of the comprehensive “how to change battery in subaru key fob” procedure. A thorough understanding of the disassembly process, coupled with the use of appropriate tools and techniques, significantly enhances the likelihood of a successful battery replacement. Potential challenges, such as variations in fob design across different Subaru models, underscore the importance of informed preparation and a cautious approach. The ability to disassemble the fob safely and effectively directly determines the viability of restoring the key fob’s operational capability.
4. Polarity Alignment
Polarity alignment is a crucial aspect of the battery replacement process within a Subaru key fob. The correct orientation of the battery, aligning the positive (+) and negative (-) terminals with the corresponding markings inside the fob casing, is essential for proper functionality. Inserting the battery with reversed polarity disrupts the electrical circuit, preventing the fob from operating. This directly impacts the success of “how to change battery in subaru key fob,” as a reversed battery will render the remote useless, irrespective of whether a new and fully charged battery is used. The “how to change battery in subaru key fob” procedure, therefore, is fundamentally reliant on correct polarity during installation.
Consider a scenario where the user successfully disassembles the fob, removes the old battery, and installs a new one. However, the battery is inadvertently placed with the positive and negative terminals reversed. In this situation, despite all other steps being executed correctly, the fob will fail to operate. The vehicle will not unlock remotely, and remote start capabilities (if equipped) will be non-functional. The cost of this error is not monetary but rather in time, frustration, and potential inconvenience. Furthermore, in some scenarios, repeated attempts with incorrect polarity may, in rare cases, damage the fob’s internal circuitry, although this is less common with modern designs. The practical application of this understanding involves careful observation of the polarity markings within the fob during the battery installation process.
In summary, polarity alignment represents a non-negotiable element of the “how to change battery in subaru key fob” procedure. It directly affects the functionality of the fob post-replacement. While the process of replacing a battery appears straightforward, overlooking polarity can lead to failure, negating the benefits of the replacement. Attention to detail and adherence to correct polarity is, therefore, paramount. The challenge lies in the small size of some fobs and the corresponding markings, demanding focused attention from the individual performing the battery replacement. Ensuring correct polarity during battery insertion is essential to a successful and functional key fob battery replacement.
5. Secure Closure
Secure closure is an integral component of the procedure to replace the power source within a Subaru key fob. The integrity of the key fob casing, once reassembled, directly impacts its resistance to environmental factors and the security of internal components. A properly secured closure ensures the battery remains in place, prevents moisture or debris ingress, and maintains the structural integrity of the fob itself.
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Physical Protection
Secure closure is the primary defense against physical damage to the key fob’s internal components. A loose or improperly closed fob is vulnerable to impacts, pressure, or torsion that could dislodge the battery or damage the circuit board. For example, a fob that is not securely closed might come apart when dropped, exposing the battery and electronics to potential harm. The “how to change battery in subaru key fob” procedure, therefore, necessitates a closure that restores the original level of protection.
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Environmental Sealing
A securely closed key fob provides a degree of protection against environmental factors, such as moisture, dust, and extreme temperatures. Moisture ingress, in particular, can corrode the battery terminals and electronic circuits, leading to premature failure. An incomplete closure offers a direct pathway for these elements to enter the fob. Therefore, ensuring a tight seal is critical to extending the lifespan of the replacement battery and the fob itself.
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Battery Retention
Secure closure is essential for maintaining proper contact between the battery and the fob’s internal terminals. An improperly closed fob may allow the battery to shift or become dislodged, resulting in intermittent or complete loss of power. Consider a scenario where the fob casing is not fully snapped together; vibrations from daily use could cause the battery to lose contact, leading to unpredictable fob behavior. A robust closure mechanism prevents this issue.
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Structural Integrity
The secure closure of the key fob contributes to its overall structural integrity. A properly assembled fob is more resistant to stress and strain, reducing the likelihood of cracking or breaking under normal use. This is particularly important for fobs that are frequently carried in pockets or attached to keychains, where they are subjected to constant movement and friction. The “how to change battery in subaru key fob” process necessitates reassembly that restores or enhances this structural strength.
These facets collectively demonstrate the importance of secure closure in relation to “how to change battery in subaru key fob”. A comprehensive understanding of these elements ensures the replacement procedure not only restores the fob’s functionality but also preserves its long-term reliability. Furthermore, the application of appropriate techniques during reassembly, such as ensuring all seams are properly aligned and snapped together, is crucial for achieving a secure and effective closure.
6. Testing Functionality
Verification of the replaced battery’s effectiveness is paramount following any attempt to replenish the power source of a Subaru key fob. Confirming operational status validates the success of the replacement procedure, mitigates potential inconveniences, and ensures the key fob’s intended functionalities are restored.
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Remote Locking and Unlocking
The immediate test after battery replacement involves attempting to remotely lock and unlock the vehicle doors. This confirms that the key fob is transmitting a signal and the vehicle is responding accordingly. For instance, failure of this test suggests issues with battery polarity, fob assembly, or battery compatibility, negating the intended outcome of “how to change battery in subaru key fob”.
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Remote Start Verification (if equipped)
If the Subaru vehicle is equipped with remote start capabilities, testing this function provides an additional layer of validation. Activation of remote start demonstrates the fob’s ability to send a more complex command to the vehicle’s computer system. A failure in remote start after executing “how to change battery in subaru key fob” may indicate a need for fob reprogramming or deeper diagnostic assessment.
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Panic Alarm Confirmation
Activating the panic alarm serves as a functional test of the key fob’s emergency features. This tests both the transmitting power and the vehicle’s ability to interpret the signal for alert activation. A non-functioning panic alarm after battery replacement suggests a failure to properly complete “how to change battery in subaru key fob”, potentially compromising safety features.
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Proximity Functionality Check (if applicable)
Some Subaru models feature proximity keyless entry and start. Testing this involves verifying that the vehicle unlocks when the fob is in close proximity and that the vehicle can be started with the fob inside. Failure of this proximity test after “how to change battery in subaru key fob” could point to issues beyond simple battery replacement, potentially requiring professional intervention.
These facets collectively highlight the vital role that testing plays in confirming the success of “how to change battery in subaru key fob”. Successful completion of these tests indicates a functional key fob, while failures provide diagnostic information for addressing potential issues. Therefore, functional testing following the replacement is essential to ensuring the desired result of restoring the fob’s operational capacity.
7. Emergency Key
The emergency key, typically a mechanical key concealed within the Subaru key fob, serves as a crucial failsafe when the remote is non-functional. Its relevance is directly connected to “how to change battery in subaru key fob” because a depleted battery is the primary reason for key fob failure. When the battery is dead, the emergency key provides a means to manually unlock the vehicle. The potential inability to access the vehicle without the emergency key underscores its importance. The “how to change battery in subaru key fob” process aims to avoid reliance on this failsafe, but awareness of the emergency key’s location and operation is paramount.
Consider a scenario where an individual is traveling and the key fob battery unexpectedly dies. Without prior knowledge of the emergency key, access to the vehicle would be impossible, potentially leading to significant inconvenience and expense. The availability of the emergency key allows for immediate access, mitigating this risk. Furthermore, the emergency key also facilitates accessing the vehicle even when the electronic locking system malfunctions due to other issues, such as electrical problems within the car itself. Thus, while “how to change battery in subaru key fob” focuses on maintaining remote functionality, understanding the emergency key’s operation ensures access under all circumstances.
In summary, the emergency key’s presence and functionality are inextricably linked to the practical need to address the potential failure of a key fob due to battery depletion. While “how to change battery in subaru key fob” outlines procedures for battery replacement, the emergency key provides a critical backup. Knowledge of its location and method of use is essential, ensuring the vehicle can be accessed even when the electronic remote system is inoperable. This understanding contributes to vehicle security and owner peace of mind, particularly in unexpected situations.
8. Fob Model
The specific design of a Subaru key fob, referred to as the fob model, significantly influences the process to replace its battery. Variations in fob construction dictate the tools and techniques required, impacting the ease and success of “how to change battery in subaru key fob.”
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Disassembly Method
Different fob models employ diverse disassembly methods. Some require sliding a mechanical release, while others necessitate prying open the casing with a tool. A 2015 Subaru key fob, for instance, may utilize a screw-based closure, contrasting with the snap-fit design prevalent in 2020 models. This variance demands specific knowledge to avoid damage during “how to change battery in subaru key fob.”
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Battery Compartment Access
The location and accessibility of the battery compartment differs considerably across fob models. Certain designs expose the battery immediately upon opening the casing, while others conceal it beneath a circuit board or behind a separate retaining clip. The complexity of reaching the battery affects the dexterity and precision needed to complete “how to change battery in subaru key fob” successfully.
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Battery Type Requirement
The battery type required for operation is contingent on the fob model. Older models may utilize CR2025 batteries, while newer versions commonly employ CR2032. Incorrect battery selection can render the fob inoperable or even damage its internal components. Verification of the appropriate battery for the fob model is crucial before initiating “how to change battery in subaru key fob.”
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Emergency Key Integration
The integration of the emergency key varies across fob models. Some designs allow for easy removal of the key, while others require a specific unlocking mechanism. Accessing the emergency key may be necessary to initiate the disassembly process in certain models. Thus, understanding the key’s integration is pertinent to executing “how to change battery in subaru key fob” effectively.
These model-specific variations underscore the necessity of identifying the specific Subaru key fob model before attempting battery replacement. Consulting the owner’s manual or online resources tailored to the specific fob model can provide the necessary guidance for a successful “how to change battery in subaru key fob” procedure.
9. Battery Disposal
The responsible management of spent batteries constitutes an essential, yet often overlooked, component of the overall process to replace the power source in a Subaru key fob. Improper disposal can introduce hazardous materials into the environment, posing risks to both human health and ecological systems. Therefore, adherence to established battery disposal guidelines is not merely a suggestion, but a necessity, when engaging in “how to change battery in subaru key fob.” Discarding batteries in standard household waste streams can lead to the leaching of heavy metals, such as lithium, into soil and groundwater, creating long-term contamination issues. The act of replacing a battery within a key fob necessitates a corresponding responsibility for the ethical and compliant disposition of the spent power cell.
Practical application of this responsibility manifests through several avenues. Retail establishments that sell batteries often offer collection programs for used batteries. Furthermore, municipal waste management authorities typically provide designated collection sites or scheduled hazardous waste disposal events. Utilizing these channels ensures batteries are recycled or processed in a manner that minimizes environmental impact. Consider the example of an individual who successfully replaces the battery in their Subaru key fob and then simply discards the old battery into their trash can. This seemingly innocuous act contributes to the broader problem of environmental pollution. In contrast, the individual who takes the additional step to deposit the spent battery at a designated recycling center actively participates in responsible waste management.
In summary, battery disposal is an integral and indispensable element of “how to change battery in subaru key fob.” Neglecting this aspect undermines the environmental benefits of responsible vehicle maintenance. Understanding the appropriate disposal methods, and actively engaging in these practices, is critical for mitigating the potential harm associated with spent batteries. The challenge lies in promoting awareness and ensuring convenient access to disposal options, fostering a culture of environmental responsibility among vehicle owners performing this routine maintenance task. The proper disposal of spent batteries ensures the “how to change battery in subaru key fob” process is environmentally conscious from start to finish.
Frequently Asked Questions
The following addresses common inquiries regarding the procedure to replace the battery in a Subaru key fob. These answers aim to provide clarity and ensure a successful maintenance process.
Question 1: How frequently should the battery within a Subaru key fob be replaced?
Battery replacement frequency is dependent on usage patterns and environmental factors. Typically, a battery lasts between one to three years. Decreased range or inconsistent operation signals the need for replacement.
Question 2: What consequences arise from utilizing an incorrect battery type?
Employing an incorrect battery type can result in non-functionality, reduced range, or potential damage to the key fob’s internal circuitry. The designated battery type, usually CR2032, must be adhered to.
Question 3: Can a Subaru key fob be reprogrammed by an individual after battery replacement?
In most instances, battery replacement does not necessitate reprogramming. However, certain models might require synchronization. Consulting the owner’s manual provides specific guidance.
Question 4: What measures are recommended to prevent damage during key fob disassembly?
Using appropriate tools, such as plastic pry tools or small screwdrivers, is essential. Applying excessive force should be avoided. Consulting model-specific disassembly guides is advisable.
Question 5: Is there a method to verify if the replaced battery is properly installed?
After replacement, testing all key fob functionalities, including remote locking, unlocking, and remote start (if equipped), confirms proper installation.
Question 6: What steps should be taken if the key fob remains non-functional after battery replacement?
Re-verify battery polarity and secure closure of the fob. If issues persist, professional diagnostic services or fob replacement may be necessary.
These frequently asked questions aim to provide a practical understanding of the key fob battery replacement process. Adhering to these guidelines ensures a higher likelihood of success.
The subsequent section provides a concise summary of the key considerations discussed in this article.
Key Considerations for Subaru Key Fob Battery Replacement
The following represents essential guidance to ensure a successful battery replacement within a Subaru key fob. Adherence to these recommendations minimizes potential complications and optimizes the procedure’s outcome.
Tip 1: Acquire the correct tools and battery type before commencing. Identifying the appropriate tools minimizes the risk of damaging the fob casing. Verifying the battery specification prevents compatibility issues.
Tip 2: Prioritize meticulous fob disassembly. Employ gentle techniques and appropriate tools to avoid damaging the casing or internal components. Document the disassembly process, if necessary, to aid reassembly.
Tip 3: Ensure accurate battery polarity alignment. Double-check the positive and negative terminal orientation before securing the battery in place. Reversed polarity prevents functionality.
Tip 4: Achieve a secure closure of the fob casing. Confirm that all seams are properly aligned and that the casing is fully snapped together. Secure closure protects internal components and maintains functionality.
Tip 5: Thoroughly test all fob functionalities post-replacement. Verify remote locking, unlocking, remote start (if equipped), and panic alarm activation. Functional testing confirms the success of the replacement process.
Tip 6: Locate and understand the function of the emergency key. Familiarity with the emergency key’s operation ensures vehicle access in the event of fob failure. This information provides a crucial backup solution.
Tip 7: Dispose of the spent battery responsibly. Utilize designated recycling centers or collection programs to minimize environmental impact. Proper disposal is essential for ethical waste management.
These considerations represent fundamental guidelines for a successful battery replacement within a Subaru key fob. Implementing these measures enhances the likelihood of achieving a fully functional remote.
The subsequent section concludes this discussion, summarizing the key points presented.
Conclusion
The preceding exploration of “how to change battery in subaru key fob” has detailed the essential steps, tools, and considerations for successful battery replacement. Key aspects encompass careful disassembly, correct battery selection and polarity alignment, secure closure, and thorough functional testing. Adherence to these guidelines maximizes the probability of restoring key fob functionality.
Mastering the process to change a battery is crucial for maintaining convenient vehicle access and functionality. Armed with the knowledge presented, vehicle owners can proactively address battery depletion, ensuring continued reliable operation of their Subaru key fobs. Regular maintenance, including timely battery replacement, contributes significantly to vehicle security and user convenience.
