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Changing the Battery in Your Mazda 3 Key Fob
It's a pain to get into your car at the end of a long day and find that the key fob is dead. Fortunately, it is simple to fix it with simple battery replacement from the hardware store or big box retailer.
Adding a spare key fob to your Mazda 3 can be an cost-effective way to stay away from the hassle of being towed to the dealership and having them reprogram your keys.
Battery Replacement
You can replace the battery on your Mazda 3 keyfob at home. mazda key fob replacement price should only replace it when the battery fails or you get a message that reads "Low keyfob battery" on the multi-information display. Replace battery."
You'll need to use a flathead screwdriver, tape and patience to open the case. Find a gap or notch in the bottom metal part of the Mazda 3's key fob and insert the head of the screwdriver in it to remove the lower part. Repeat the process for the top piece of metal Be careful not to scratch the rubber ring that is on the bottom of the case.
Once the fob case is open, you'll see the slot on either side of the case, which houses the battery. Start on the other side of the case and then gently pry it open. Remove the old battery, and put in a new CR2025 and make sure it's in the right orientation for the correct polarity. Install the cap on the battery again, and then attach both sides of your key fob case by pressing until they click.
After you've replaced the battery Test the fob to verify that it is working by locking and unlocking your doors. If everything appears to be working, you can start using the Mazda 3's remote features on the road again!
Pairing Issues
If your key fob has stopped suddenly it could mean that the transmitter inside the car is damaged. It is usually a job for a professional and you require a new key fob.
If you've tried to change the battery and reprogramme the key fob, but it hasn't worked it is possible that the chip inside the key fob may be faulty. This can happen if your keyfob was dropped or exposed to saltwater or the touch of dirty fingers.
You'll need the tiny "key" that is built into the seam to remove the circuit board and identify the issue. Then, you can examine the electronic chip for damage or corrosion. To avoid damaging the chip, it's best to use a fresh paper towel.
You can also take a closer look at the battery connector's terminals to examine if they're cracked or broken. If this is the case, soldering the terminals back into place will typically 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 resoldered into position, unless they've physically snapped.
Interference Signals
There are few things more frustrating than looking at the "No Fob Detected" message when trying to start your car. This can happen at the most inconvenient possible times, like the time you're late to work or you're trying to collect your children from school/daycare. There are some things you can do to help figure out what's causing the issue.
Interference signals can interfere with the remote key fob signal from the vehicle and cause it to not work properly. It can be caused by objects such as weather conditions, buildings and transmitters using the same frequency. Interference can occur if your vehicle has aftermarket equipment that transmits at the same frequency as your key fob.
In addition, if the key fob is exposed to salt or water it may be damaged. Water can get into the rubber seals of the electronic chip, particularly when the key fob has been submerged in water for a long duration. The chip could stop working and require replacement of the keyfob. If you own a programmable key cleaning the chip with isopropyl Alcohol or an electronic cleaner to aid in its get back to its original functionality. If this doesn't help the chip, it's likely to be fried and will require to be replaced.
Locking and Unlocking of Doors
The buttons on the key fob transmit electronic signals to a solenoid within the car, which converts that signal into a mechanical action that locks and unlocks the doors. If your door lock does not work, it could be an issue with the solenoid. This will require professional repair shops to look into.
A dead 12 volt battery could also stop the fob from working properly. This could happen if the battery fails to charge or if the contacts are corrosion-prone. The good news is that a new battery can resolve this issue in a matter of minutes.
The receiver module could be the cause of the issue if the key fob won't work after replacing the battery or reprogram the device. This device receives radio frequency signals from the key fob and interprets them to control the functions of the vehicle. It could be expensive to repair if it becomes faulty.
To determine if this is true, put your spare key into the key slot. Then turn the ignition on. Press the key fob two times in a period of 10 seconds, without removing it. The Mazda 3 system synchronizes the key with the vehicle and you can now use it as your primary remote for driving. You can program up to three keys this way.