If your car’s key fob requires multiple button presses to unlock or lock, its battery may be running low and needs replacing – available from most retailers that sell batteries. You can purchase replacements at most retail locations that sell batteries.
Needed items include a precision screwdriver and thin tool (a toothpick or metal cake tester works), as well as the slot on either side of the case to use with it in prying it apart using the screwdriver.
How to replace it
As soon as your key fob battery dies, its functions become inoperable – which can be extremely annoying! However, replacing it yourself is relatively straightforward and only costs a few dollars to complete the task.
Pressing the auxiliary key button on the back of your fob to release its metal key is the first step toward opening its case. Next, find a notch in one of its halves and poke in a tape-wrapped flathead screwdriver to pry open its case.
Once the two halves of your key fob are separate, change out the CR2032 battery by placing its positive side facing upward. Reassemble your key fob pieces until you hear a click; this should allow you to start your car! These steps should work for all Mazda flip keys; for specific instructions please refer to your owner’s manual.
Tools you’ll need
Key fobs are essential in starting up your vehicle and are responsible for sending an electronic signal whenever either the lock or start button is pressed. When they stop functioning correctly, it’s often due to battery drain.
To replace it, you will require a new CR2032 battery – also used in clocks, calculators and photo equipment. Additionally, you’ll require a flathead screwdriver and something to pry apart the two halves of the key fob.
Look for a small space or notch on the seam that separates the front and back of your key fob case. Use either a coin, screwdriver, or thin knife to pry open this opening. Once removed from its case, locate its square compartment holding batteries, remove old one then insert new battery in same way – also be sure to set its orientation correctly!
Where to buy it
If you are having difficulty opening or starting your car using the keys fob buttons, a weak fob battery could be to blame. A new battery can usually be purchased at your local hardware store or big box retailer for around $10.
A 3-Volt coin battery like the CR2025 or CR2032 should work in most fobs; to find out which battery you need for your particular fob, consult its owner’s manual. Once you find the appropriate type, install it with its positive side facing up, ensuring its positive terminal faces up; snap two halves of its case closed again after installation.
If you don’t feel confident opening and replacing the battery yourself, most dealerships provide services to do it for you. However, they may decline programming an aftermarket fob remote key (with an aftermarket key blade). Therefore, for best results it would be wise to visit an automotive accessory or battery specialist shop who specialize in parts for your vehicle as they will also help find you a replacement key fob and cut its original key so as to fit with it.
How to install it
Add this remote start module to enhance your driving experience and cut fuel costs! Compatible with vehicles manufactured between 1999-Present, this remote start solution should fit most Mazda vehicles perfectly.
If your car won’t start, the problem could be due to a dead battery in its key fob. Replacing it is generally quick and simple: take these steps: (1) Unlock your manual key from its fob, using a small flathead screwdriver in either slot; gently twisting with one hand should separate both halves of the fob;
Next, remove and install a new battery into its place ensuring it faces positively before reassembling the fob pieces with care not to damage the rubber ring that holds it together.
FAQ
What type of battery does the Mazda 2 2011 key fob use?
The 2011 Mazda 2 key fob uses a CR1620 lithium coin battery. This compact battery provides reliable power and is widely available at hardware stores and online retailers.
How do I know if my Mazda 2 2011 key fob battery needs replacing?
If the key fob becomes unresponsive, the range decreases, or the vehicle shows a “key fob battery low” warning, it’s time to replace the battery to restore functionality.
Can I replace the Mazda 2 2011 key fob battery myself?
Yes, replacing the battery is simple and can be done at home. You’ll need a new CR1620 battery and a small flat-head screwdriver or plastic pry tool to open the fob.
How do I open the Mazda 2 2011 key fob to replace the battery?
To open the key fob, remove the mechanical key by pressing the release button. Then, use a small flat tool to gently pry open the case along the seam.
Where can I buy a replacement battery for my Mazda 2 2011 key fob?
CR1620 batteries are available at hardware stores, supermarkets, electronics shops, and online marketplaces. Choose a reputable brand for better performance and longevity.
How long does the battery in the Mazda 2 2011 key fob last?
The CR1620 battery typically lasts two to three years, depending on usage. Frequent use of remote functions, like unlocking or trunk access, can reduce battery life.
Do I need to reprogram the key fob after replacing the battery?
No, changing the battery will not affect the programming. The key fob should work normally once the new battery is installed correctly.
What should I do if the key fob doesn’t work after replacing the battery?
Ensure the new battery is inserted with the positive (+) side facing up. If the fob is still unresponsive, try another new battery or contact your local Mazda dealer.
How much does a replacement CR1620 battery cost?
A CR1620 battery usually costs between $3 and $8, depending on the brand and where you purchase it. Replacing the battery yourself is cost-effective compared to dealer services.
How do I dispose of the old key fob battery?
Used batteries should be recycled at designated drop-off points to prevent environmental harm. Do not throw lithium batteries in regular trash.
What tools do I need to replace the Mazda 2 2011 key fob battery?
You will need a CR1620 lithium battery and a small flat-head screwdriver or plastic pry tool to open the key fob safely.
Can I use a different brand of CR1620 battery for my key fob?
Yes, as long as it is a CR1620 lithium coin battery. High-quality batteries from reputable brands offer better performance and a longer lifespan.
How often should I replace the key fob battery?
It’s recommended to replace the key fob battery every two to three years or sooner if you notice reduced performance or responsiveness.
Can extreme temperatures affect the key fob battery?
Yes, extreme heat or cold can impact battery performance. To prolong battery life, store the key fob in a cool, dry place away from direct sunlight.
What should I do if the battery dies while I’m away from home?
Use the mechanical key inside the fob to unlock the driver’s door. If the vehicle has push-start functionality, hold the fob close to the start button to start the engine.
Can I use rechargeable batteries for my key fob?
Rechargeable batteries are not recommended, as they don’t provide consistent voltage like non-rechargeable lithium batteries. Stick with a CR1620 lithium battery for best results.
How can I test if the new battery is working?
Press any button on the key fob. If the vehicle responds, the battery is installed correctly. If not, recheck the installation or try a different battery.
What happens if I install the battery incorrectly?
The key fob will not function if the battery is installed with the wrong polarity. Ensure the positive (+) side faces up when inserting the CR1620 battery.
How do I align the key fob casing after battery replacement?
After inserting the new battery, align the two halves of the key fob and press them together until they click securely into place.
What should I do if the key fob casing breaks during battery replacement?
If the casing breaks, you may need to replace the key fob. Contact your Mazda dealership for a replacement and programming assistance.
How do I unlock all doors if the key fob battery is dead?
Use the mechanical key to unlock the driver’s door, then press the unlock button inside the vehicle to unlock the remaining doors.
Does the key fob battery affect the car alarm?
Yes, a dead battery may prevent the fob from arming or disarming the alarm. Replace the battery promptly to ensure all functions work correctly.
How do I prevent the key fob battery from draining too quickly?
Store the key fob away from other electronic devices that could interfere with it. Avoid pressing buttons accidentally when not in use.
How do I store spare key fob batteries?
Store spare batteries in a cool, dry place away from moisture and extreme temperatures to ensure they remain functional when needed.
Can I reset the key fob after replacing the battery?
No reset is typically needed. If the fob doesn’t work, hold it near the push-start button to re-establish the connection with the vehicle.
How do I know if my key fob needs a new battery?
Signs include reduced range, unresponsive buttons, or a dashboard warning message indicating a low key fob battery.
What is the range of the Mazda 2 2011 key fob?
The typical range is 100 to 300 feet. A new battery will restore the fob’s optimal range, ensuring reliable remote functionality.
Will the key fob light up after replacing the battery?
Some key fobs have an LED indicator that flashes when a button is pressed. If it doesn’t light up, recheck the battery installation or try another battery.
Can I drive the car if the key fob battery is dead?
Yes, if the vehicle has a push-start system, hold the dead key fob near the start button while pressing the brake to start the engine.
How do I unlock the trunk if the key fob battery is dead?
Use the mechanical key to unlock the driver’s door, then access the trunk release button inside the vehicle.
Will replacing the battery affect the key fob’s programming?
No, the key fob’s programming will remain intact. Replacing the battery will not erase or alter any settings.
What should I do if the “key fob battery low” warning stays on after replacement?
Restart the vehicle to clear the warning. If it persists, remove and reinstall the battery. If the issue continues, contact your dealership.
Can the key fob battery drain even when not in use?
Yes, if the fob is stored near other electronics or accidentally pressed. Store it in a safe place to conserve battery life.
What should I do if I lose my key fob?
Contact your Mazda dealership for a replacement. A new key fob will need to be programmed to your vehicle to restore full functionality.
How do I ensure the battery is installed correctly?
Check that the positive (+) side of the battery is facing up. Some key fobs also have markings inside the battery compartment to guide installation.