Delving into how to replace battery in subaru key fob, this is a crucial task that often gets overlooked until our remote key fobs suddenly stop working. We will guide you through every step, ensuring you get it right the first time.
The process is not complicated, but there are some safety precautions and basic knowledge you need to know before starting. In this article, we will cover everything from safety precautions to replacing the old battery with a new one.
Safety Precautions for Replacing Subaru Key Fob Battery
When replacing the battery in your Subaru key fob, it is essential to take safety precautions to prevent damage to the device and injury to yourself. The key fob contains electronic components that can be sensitive to static electricity, and handling batteries requires care to avoid cuts and puncture wounds.
Working in a Safe Environment
To ensure a safe working environment, follow these guidelines. Start by working in a well-lit area with adequate ventilation. This will prevent any potential electrical hazards and reduce the risk of inhaling battery fumes.
- Choose a well-lit area with minimal shadows, reducing the risk of tripping or slipping.
- Maintain a comfortable working temperature between 20-25°C (68-77°F) to prevent battery damage.
- Ensure good ventilation by keeping windows open or using an exhaust fan to prevent inhaling battery fumes.
Safety Precautions for Electronic Components
When working with electronic devices, it is crucial to handle them carefully to prevent damage. Static electricity can cause damage to sensitive components, so take measures to ground yourself and prevent static discharge.
- Touch a grounded metal object, such as a tap or a door handle, to discharge static electricity from your body.
- Wear protective gloves to prevent cuts and puncture wounds when handling batteries.
Special Precautions for Handling Batteries
Batteries can be hazardous if not handled properly. Always follow safety precautions when handling batteries to prevent accidents.
| Action | Precaution | Reason |
|---|---|---|
| Handling batteries with metal objects | Use plastic or wooden tools to avoid sparks | Prevent risk of explosion or fire |
| Leaving batteries in a charging device | Ensure batteries are removed before charging | Prevent damage to charging device or battery |
Precautions for Static Electricity
To prevent damage to electronic components caused by static electricity, follow these guidelines.
- Ground yourself by touching a grounded metal object before handling the key fob.
- Use an anti-static wrist strap or mat to prevent static electricity discharge.
Locating the Key Fob Battery Compartment: How To Replace Battery In Subaru Key Fob
To replace the battery in your Subaru key fob, it is essential to identify and locate the battery compartment. The process is straightforward and requires a few simple tools, but the correct approach will prevent damage to the key fob or the surrounding components.
Location of the Battery Compartment
The battery compartment on a standard Subaru key fob is typically located on the backside of the remote control. It is usually marked with a small screw or a tab that can be easily removed using a flathead screwdriver or a small coin. In some cases, the compartment might be hidden behind a small plastic piece that needs to be removed or pulled back.
- Flip the key fob over and locate the backside. Look for a small screw, a tab, or a slight depression where the compartment is situated.
- Insert a flathead screwdriver or a small coin into the marked area and gently pry the compartment open.
- Slide the compartment cover off, taking care not to damage any internal components or push out any screws.
The battery compartment is usually a small plastic piece containing the old battery and other internal components. Take care not to damage the surrounding parts when disassembling and reassembling the key fob.
Type of Battery Used
The type of battery used in Subaru key fobs varies depending on the model year and specific remote control configuration. Typically, standard Subaru key fobs use a small CR1620 or CR2032 battery, but this can vary in certain cases.
- For CR1620 batteries, you can expect around 3-5 years of battery life based on normal usage.
- CR2032 batteries usually last between 2-4 years under normal conditions.
It is crucial to verify the type of battery used in your key fob before purchasing a replacement. You can consult your owner’s manual or contact a local Subaru dealership for more information on the recommended battery type.
Disassembling the Key Fob, How to replace battery in subaru key fob
Disassembling the key fob to access the battery compartment requires gentle and careful handling. Use a soft cloth or a plastic pry tool to avoid scratching the key fob.
- Hold the key fob firmly with one hand, and use the other hand to gently pry the compartment cover off.
- Once the cover is removed, use a small screwdriver to carefully push out the battery and other internal components.
- Take care not to damage the key fob or the internal components during the process.
Make sure to follow proper reassembly procedures to ensure the key fob functions correctly after the battery replacement.
In the next section, we will cover how to replace the battery in your Subaru key fob with a new one, including any necessary precautions and considerations.
Removing the Old Battery
When replacing the battery in your Subaru key fob, it’s essential to safely remove the old battery to avoid damaging the surrounding components. This requires patience and caution, as the key fob’s interior is sensitive to scratches and damage.
To begin, locate the battery compartment, which is usually marked with a small symbol or label. Make sure to identify the type of battery used in your key fob, as this will determine the removal process.
Using a Battery Puller
A battery puller is a specialized tool designed to safely remove batteries from key fobs and other electronic devices. To use a battery puller, place the tool around the old battery and gently twist it until the battery is removed. This method is effective, but it may damage the surrounding components if not done carefully.
| Method | Benefits | Drawbacks |
|---|---|---|
| Using a battery puller | Easily removes old battery | May damage surrounding components |
Using a Screwdriver
If you don’t have a battery puller, you can use a screwdriver to remove the old battery. This method is cost-effective, but it requires caution to avoid damaging the key fob. Insert the screwdriver into the small opening and carefully pry out the old battery.
| Method | Benefits | Drawbacks |
|---|---|---|
| Using a screwdriver | Cost-effective | May cause damage to key fob |
Importance of Proper Disposal
When removing the old battery, it’s crucial to properly dispose of it to prevent environmental harm. Check local regulations for guidelines on disposing of batteries, and consider recycling them whenever possible. Batteries contain toxic materials, such as mercury and lead, which can contaminate soil and water if not disposed of correctly.
Comparison of Battery Types
The type of battery used in your Subaru key fob can affect its performance and durability. Alkaline batteries are widely available and relatively inexpensive, but they have a shorter lifespan compared to rechargeable batteries. Rechargeable batteries, on the other hand, can be reused multiple times, reducing waste and saving money in the long run. However, they can be more expensive upfront and may require specialized charging equipment.
In summary, safely removing the old battery from your Subaru key fob requires patience and caution. Use a battery puller or screwdriver to remove the old battery, and ensure proper disposal of the battery to prevent environmental harm. Consider the type of battery used in your key fob and its potential impact on performance and durability.
Installing the New Battery

Replacing the battery in your Subaru key fob is a straightforward process that requires attention to detail and caution. Proper alignment and connection of the terminals are crucial for ensuring the new battery functions correctly.
Step-by-Step Installation
When installing the new battery, first, take the new battery and align it with the terminal on the key fob. Make sure the positive terminal (+) is facing up and the negative terminal (-) is facing down.
- Carefully insert the positive terminal into the positive terminal hole on the key fob. Ensure it is securely seated and not loose.
- Align the negative terminal with the negative terminal hole and insert it into the hole. Again, ensure it is securely seated and not loose.
- Once both terminals are in place, gently push the battery into its compartment, making sure it is secure and not loose.
Properly Securing the New Battery
After installing the new battery, take a moment to ensure it is properly secured in its compartment. The battery should be held in place by a small spring or plastic clip, depending on your key fob model. Verify that the battery is secure and not loose to avoid damaging the surrounding components.
Properly securing the new battery ensures that the key fob functions correctly and the surrounding components remain safe.
Testing the New Battery
After installing the new battery, test its functionality using a multimeter. Ensure the multimeter is set to DC volts (20V) and the probes are connected to the positive and negative terminals.
- Set the multimeter to DC volts (20V).
- Connect the red probe (positive) to the positive terminal of the battery.
- Connect the black probe (negative) to the negative terminal of the battery.
- Take a reading on the multimeter. If the reading is within the expected voltage range (typically 3-5 volts), the battery is functioning correctly.
Remember to consult your key fob’s user manual for specific instructions and guidelines for replacing the battery, and ensure you follow all necessary safety precautions.
Ending Remarks

In conclusion, replacing the battery in your Subaru key fob is a relatively simple process that can be completed with the right tools and knowledge. By following the steps Artikeld in this article, you should be able to successfully replace the battery and get back to driving your trusted Subaru vehicle. Remember to always prioritize safety and take necessary precautions when working with electronic components and batteries.
Clarifying Questions
What if my key fob is waterlogged, should I replace the whole thing?
No, if your key fob is waterlogged, try drying it out first by removing any batteries and leaving it in a dry place for a few days. If it still doesn’t work, you might need to replace it, but it’s worth a shot before getting a new one.
Can I replace the battery myself or do I need a professional?
You can definitely replace the battery yourself, but if you’re not comfortable with electronics or don’t have the right tools, it’s always best to consult a professional mechanic or the dealership.
How often should I replace my key fob battery?
The frequency of replacing your key fob battery depends on usage, but typically every 2-3 years. If your key fob starts to lose its signal or you experience frequent battery drain, it’s likely time for a replacement.