Changing the Battery in Your Mazda 3 Key Fob
It is frustrating to get into your car at the end of a long, hard day and discover that the key fob is dead. This is a straightforward fix that is easily done at a big box retailer or at a hardware store.
A spare key fob for your Mazda 3 is an inexpensive alternative to not having to take your vehicle to a dealership in order to have them re-program your keys.
Battery Replacement
You can replace the battery on your Mazda 3 keyfob at home. But, you should only replace the battery when it goes out of service, or if the key fob displays a message on the multi-information display that reads, "Low key fob battery. Replace battery."
You'll need to use a flathead screwdriver with tape and patience to open the case. Find a gap or notch in the bottom portion of the metal of your Mazda 3's key fob and then insert the head of the screwdriver in it to pry off the lower half. Repeat this step for the top portion of the metal however, be careful not to damage the rubber ring at the bottom of the key fob's case.
There's a slot the opposite side of the case that contains the battery. Start on the other side of the case, and then gently lift it up. Remove the old battery and then put in a new CR2025 to ensure that it's facing up to ensure proper orientation. Install the cap on the battery again and attach both sides of your key fob case by pressing until they click.
After you've replaced the battery Check the fob to make sure it is working by locking and unlocking your doors. If everything is working then you're able to use your Mazda 3's remote features for the first time!
Pairing Issues
This could be a sign that the transmitter in your car may have been damaged. This is usually a matter for a professional, and you require a new key fob.
If you've attempted to replace the battery and reprogramme the key fob but it hasn't worked then the chip in the key fob may be faulty. This could happen if the key fob was dropped on hard surfaces, exposed to salt water or even brushed by dirty hands.
You'll need to find an extremely small "key" that is built into the seam, to remove the circuit board and determine the problem. Then, you can check the electronic chip for corrosion or damage. To avoid damaging the chip, it is recommended to use a clean paper towel.
You can also take a close look at the battery connector terminals to examine if they're cracked or broken. If this is the case, carefully reconnecting them can generally restore the functionality of the key fob. You can also inspect the buttons for damage or wear. If the buttons are loose, they can be soldered back into place and also if the button has actually snapped off.
Interference Signals
There are few things more difficult than trying to start your car only to see the message "No Fob Detected". It typically happens at most awkward times, such as when you're running late for work or picking up children from daycare/school. The good thing is that there are steps you can take to troubleshoot the issue and figure out what is causing it.
Interference signals can interfere with the remote key fob's signal to the vehicle and cause it to not work correctly. This can be caused by objects such as weather conditions, buildings, and transmitters that use the same frequency. Interference can occur when your vehicle has aftermarket equipment that transmits at the same frequency as your key fob.
The key fob may also be damaged if exposed to salt water or water. Water can penetrate the rubber seals of the electronic chip particularly in the event that the key fob is submerged in water for a lengthy time. The chip could stop working and require replacement of the keyfob. If you have a programable key cleaning the chip with isopropyl alcohol or an electronic cleaner to help it get back to its original functionality. If this does nothing, it is likely that the chip has been damaged and must be replaced.
Locking and Unlocking of Doors
The key fob's buttons send electronic signals to the solenoid inside the car. It converts that signal into mechanical action that locks and unlocks doors. If your door lock isn't working it could be because of an issue with the solenoid. This will require experts from repair shops to analyze.
A dead 12 volt can also prevent the fob from working properly. This can occur if your battery fails to charge or if your contacts become damaged. This issue can be solved in a matter of minutes by replacing the battery.
The receiver module may be the cause of the issue if the key fob won't work after you replace the battery or reprogram the device. This device receives radio frequency signals from the key fob and interprets them into controlling the vehicle's functions. If mazda verisa key replacement fails it could be costly to repair.
To confirm if this correct, place your spare key into the key slot. Then, turn the ignition on. Press the key fob twice in a period of 10 seconds, without taking it out. The Mazda 3 system synchronizes the key with the vehicle, so you can use it as your primary driving remote. This lets you program up three keys.