Key Fob Battery Replacement: What Size Battery for 2017 Mazda 5 Remote?

The 2017 Mazda 5 key fob requires a CR2025 battery. To replace it, use a small screwdriver to open the fob. Remove the back cover, swap the old battery for a new CR2025, and reassemble. Be sure to handle the fob carefully during the battery replacement process.

Replacing the battery involves opening the key fob casing. This can usually be done with a small flat-head screwdriver or a similar tool to gently pry apart the two halves of the key fob. Once open, carefully remove the old battery and insert the new CR2025 battery, ensuring the positive side faces the correct direction as indicated.

After replacing the battery, reassemble the key fob and test its functionality. A successful test indicates that the battery replacement was done correctly and the remote is ready to use.

Understanding the key fob battery replacement process is essential for maintaining vehicle access. Next, we will discuss helpful tips for prolonging battery life and troubleshooting common key fob issues.

What Size Battery Does the 2017 Mazda 5 Key Fob Require?

The 2017 Mazda 5 key fob requires a CR2025 battery.

1. Battery Type: CR2025
2. Battery Dimensions: 20mm diameter, 2.5mm thickness
3. Battery Voltage: 3 volts
4. Battery Replacement Process: Simple, user-friendly
5. Cost of Battery: Generally low; varies by retailer

Understanding the battery specifications is essential for successful replacement and maintenance of your key fob.

1. Battery Type: CR2025: The battery required for the 2017 Mazda 5 key fob is a CR2025. This lithium coin cell battery is commonly used in various electronic devices. It is crucial to select the correct type to ensure proper functionality of the key fob.

2. Battery Dimensions: 20mm Diameter, 2.5mm Thickness: The CR2025 battery has a specific size—20mm in diameter and 2.5mm in thickness. These dimensions ensure a snug fit within the key fob. Using a battery of different size could lead to poor performance or damage to the device.

3. Battery Voltage: 3 Volts: The CR2025 operates at 3 volts. This voltage rating is standard for most key fob batteries. A battery with a lower voltage may not provide enough power for the key fob to function properly. Therefore, sourcing the correct voltage is critical.

4. Battery Replacement Process: Simple, User-Friendly: Replacing the CR2025 battery in the 2017 Mazda 5 key fob is relatively simple. Typically, the process involves opening the fob, removing the old battery, and inserting the new one. Care should be taken to ensure proper orientation when installing the new battery.

5. Cost of Battery: Generally Low; Varies by Retailer: The cost of a CR2025 battery is generally low, with prices ranging from $2 to $5, depending on the retailer. Some consumers may prefer to buy in bulk to save costs. Checking different retailers for deals may provide more economical options.

Using a compatible and functional battery ensures the reliability of your key fob for operating your Mazda 5.

How Can I Tell When My 2017 Mazda 5 Key Fob Battery Needs Replacement?

You can tell when your 2017 Mazda 5 key fob battery needs replacement by observing several key signs. These signs include a weak signal when locking or unlocking the doors, a decrease in range for functionality, or dashboard warnings that indicate a low battery.

• Weak signal: If the key fob requires multiple attempts to lock or unlock your vehicle, it may be an indication that the battery is losing power. A fully functional key fob should operate seamlessly from a distance.
• Decreased range: If you find that you must be closer to the car for the key fob to work, this could signal that the battery is weakening. A strong battery typically allows you to operate the fob from several feet away.
• Dashboard warnings: Some vehicles feature indicators that will alert you when the key fob battery is low. If your dashboard displays a warning light related to the key fob, it is prudent to replace the battery soon.
• Physical signs of battery exhaustion: An inspection may reveal symptoms such as corrosion or leaks around the battery compartment. This is often a clear indicator that your key fob battery needs to be replaced for safety and functionality.

If you notice any of these signs, it is advisable to replace your key fob battery promptly to ensure continued operation without interruptions.

What Steps Do I Follow to Replace the Battery in My 2017 Mazda 5 Key Fob?

To replace the battery in your 2017 Mazda 5 key fob, follow these general steps: Obtain the correct battery type, open the key fob, replace the battery, and reassemble the key fob.

Key Steps to Replace the Battery:
1. Obtain a CR2025 battery.
2. Open the key fob using a flathead screwdriver.
3. Remove the old battery.
4. Insert the new battery.
5. Close the key fob.

These steps provide a straightforward approach to battery replacement, but there are different opinions on the need for professional assistance.

1. Professional Assistance: Some users recommend seeking help from a dealership or locksmith if you are unsure about the process.
2. DIY Approach: Others prefer the DIY method for convenience and savings.
3. Battery Quality: Some individuals emphasize the importance of using high-quality batteries to ensure longevity.

Key Steps to Replace the Battery:
1. Obtain a CR2025 battery: The 2017 Mazda 5 key fob requires a CR2025 battery. This battery type is widely available and can be found in most electronics stores or online stores.

2. Open the key fob using a flathead screwdriver: To access the battery compartment, you need to open the key fob. Insert a flathead screwdriver into the seam of the key fob at the designated opening point. Gently twist the screwdriver to pry open the fob without damaging it.

3. Remove the old battery: Once open, locate the old battery. Take note of its orientation—positive side up. Carefully remove the old battery by sliding it out of its compartment.

4. Insert the new battery: Place the new CR2025 battery in the same orientation as the old one. Ensure that the positive side is facing up, as indicated in the battery compartment. Firmly press the battery into place.

5. Close the key fob: Align the two halves of the fob and press them together until you hear a click, indicating that the fob is securely closed. Test the key fob by pressing the buttons to ensure it operates correctly.

By following these steps, you can successfully replace the battery in your 2017 Mazda 5 key fob and restore its functionality.

What Tools Are Essential for Replacing the Key Fob Battery?

To replace a key fob battery, you will need a few essential tools.

1. Small flathead screwdriver
2. Replacement battery (specific type varies by fob)
3. Tweezers (optional)

Having the right tools is crucial for an effective and hassle-free battery replacement process.

1. Small Flathead Screwdriver: A small flathead screwdriver is essential for prying open the key fob casing. It allows you to access the internal components safely and effectively.

2. Replacement Battery: The replacement battery type depends on the specific key fob model. Common battery types include CR2032 or CR2025, which are coin cell batteries. Always check your key fob’s manual for the exact battery requirements.

3. Tweezers (Optional): Using tweezers can help you handle small batteries easily. This tool can be especially useful if the battery compartment is compact or difficult to reach.

By understanding these tools, you’ll be equipped to successfully change your key fob battery.

1. Small Flathead Screwdriver: The small flathead screwdriver is used to separate the two halves of the key fob. Caution is necessary to avoid damaging the fob’s casing. A light, gentle pressure is recommended.

2. Replacement Battery: The replacement battery is crucial for restoring the key fob’s functionality. For example, a CR2032 battery is commonly used in various fobs. These batteries are widely available at electronics stores and online retailers. Data from the Battery Association indicates that the typical lifespan of these batteries is about 3 to 5 years, depending on usage.

3. Tweezers (Optional): The use of tweezers can make battery installation easier, especially in a tight compartment. They allow for precise handling without the risk of dropping the small battery. Using a pair of non-conductive tweezers is advisable to avoid any accidental short circuits.

Understanding these tools will ensure you complete the battery replacement efficiently and safely.

How Do I Open the Key Fob to Access the Battery?

To open the key fob and access the battery, locate the seam and use a flat tool or coin to gently pry apart the two halves of the fob.

Start by identifying the seam, which is the thin gap running along the edge of the fob. Be cautious while doing this to avoid damage. Next, here are the steps:

• Flat Tool or Coin: Use a flathead screwdriver, a plastic pry tool, or even a coin. These tools provide the necessary leverage without damaging the plastic casing.

• Positioning: Insert the tool into the seam. Position it at a slight angle to create a small gap.

• Prying: Gently twist the tool to separate the halves of the fob. Work slowly to avoid using excessive force, as this can crack the fob casing.

• Internal Components: Once the fob separates, observe the placement of the battery inside. Often, the battery will be held in place by a clip or a removable panel.

• Replacing the Battery: Remove the old battery carefully. Note the orientation of the battery to ensure proper installation of the new one.

• Closing the Fob: After replacing the battery, align the halves of the fob securely. Press them together until you hear a click, indicating the fob is closed properly.

Following these steps ensures you can access and replace the battery in your key fob safely and effectively.

Where Can I Find the Correct Replacement Battery for My 2017 Mazda 5 Key Fob?

To find the correct replacement battery for your 2017 Mazda 5 key fob, follow these steps. First, identify the battery type required. The 2017 Mazda 5 key fob typically uses a CR2025 lithium battery. Next, visit local stores that sell automotive supplies or batteries. Stores like Walmart, AutoZone, or Batteries Plus usually carry this type of battery. You can also check online retailers such as Amazon or eBay for easy ordering. Finally, verify that the battery matches the specifications. Look for the CR2025 label on the packaging to ensure proper fit. By following these steps, you can successfully replace your key fob battery.

What Are the Options if I Choose Not to Replace My 2017 Mazda 5 Key Fob Battery?

If you choose not to replace your 2017 Mazda 5 key fob battery, several options are available.

1. Use the key blade.
2. Access the vehicle via the door lock.
3. Rely on the spare key fob.
4. Seek assistance from a locksmith.
5. Contact a Mazda dealership for support.

These options can serve various needs and preferences depending on your situation and resources.

1. Using the Key Blade: You can use the key blade that is sometimes integrated into the key fob. This key can manually unlock the driver’s side door. However, it will not allow you to start the engine unless the immobilizer recognizes an operational key fob.

2. Accessing the Vehicle via the Door Lock: If you prefer to avoid key fob usage entirely, simply use the physical key to unlock the car door. This method is reliable, but remember that it bypasses the electronic locking system.

3. Relying on the Spare Key Fob: If you have a spare key fob, you can use it to operate the vehicle. This is the easiest solution if you intend to keep the key fob on hand while deciding whether to replace the battery in your primary unit.

4. Seeking Assistance from a Locksmith: A locksmith can provide a range of services, from battery replacement to reprogramming. This is beneficial if the key fob has complex issues beyond just a battery problem.

5. Contacting a Mazda Dealership for Support: If none of the above options are appealing, visiting a Mazda dealership offers professional help. The dealership can replace the key fob battery, program a new fob, or offer additional solutions based on your needs.

In summary, weighing these options can help you make the best decision based on your specific circumstances.

What Should I Do if My 2017 Mazda 5 Key Fob Does Not Function After Battery Replacement?

If your 2017 Mazda 5 key fob does not function after battery replacement, follow these steps to troubleshoot the issue.

1. Verify the battery orientation and type.
2. Reprogram the key fob.
3. Check for physical damage to the fob.
4. Inspect the vehicle’s receiver.
5. Consult a professional technician.

To better understand the issue, let’s delve into each step in detail.

1. Verifying Battery Orientation and Type: Verifying battery orientation and type ensures that the key fob receives the correct power supply. Key fobs often require specific battery types, such as CR2025 or CR2032. If the battery is installed backward or is not the correct size, the fob will fail to function.

2. Reprogramming the Key Fob: Reprogramming the key fob may restore its functionality. Sometimes, after battery replacement, the key fob loses its connection with the vehicle’s system. Many Mazda vehicles need the key fob to be reprogrammed using specific sequences, which may involve inserting the key into the ignition and performing steps within a certain timeframe.

3. Checking for Physical Damage to the Fob: Checking for physical damage to the fob is essential. Dropping the key fob can cause internal damage that affects its performance. Signs of damage include cracks or unresponsive buttons. If damaged, the fob may need repair or replacement.

4. Inspecting the Vehicle’s Receiver: Inspecting the vehicle’s receiver checks if the car’s system is communicating effectively with the key fob. If the receiver is malfunctioning, it may not recognize the fob even if the fob is functional. Electrical issues in the car, such as blown fuses, can also impact performance.

5. Consulting a Professional Technician: Consulting a professional technician is advisable if troubleshooting fails. Technicians have specialized tools and knowledge to diagnose and resolve key fob issues. Sometimes, they can also identify whether the issue lies with the fob or the vehicle’s electronics.

By following these steps, you can identify and potentially resolve the issue with your 2017 Mazda 5 key fob after battery replacement.

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