10 Situations When You'll Need To Be Aware Of Mazda 6 Key Fob

Changing the Battery in Your Mazda 3 Key Fob

There is nothing more frustrating than getting to your car after a long day and discovering that the key fob battery is dead. This is a simple fix that can be done at a big box retailer or at a hardware store.

Adding a spare key fob to your mazda 5 key fob 3 can be an inexpensive way to save yourself from the hassle of being towed to the dealership and having them re-program your keys.

Battery Replacement

You can change the battery on your Mazda 3 keyfob at home. However, you should replace the battery if it is dead, or if the key fob displays a message on the multi-information display, "Low key fob battery. Replace battery."

You'll need a flathead screwdriver, tape and patience to open the case. The head of the flathead screwdriver into a notch, program or gap on the bottom of the metal of the Mazda 3 key fob to remove the lower part. Repeat this process for the top metal piece however, be careful not to damage the rubber ring on the bottom of the key fob's case.

There is a slot on each side of the fob case, where you can find the battery. Start on the other side of the case and gently open it. Take out the old CR2025 and replace it with a brand new one, making sure that you put it on its face to ensure the correct orientation. Install the cap on the battery again and attach both sides of your key fob case by pressing until they click.

After replacing the battery check the fob to confirm it is working by locking and unlocking your doors. If everything seems to be in good order, your Mazda 3 remote features can be used again.

Pairing Issues

If your key fob stops functioning suddenly, this could indicate that the transmitter inside the car is damaged. It is typically a need for an expert to repair it and will likely require a new replacement key fob.

If you have tried replacing the battery and reprogramming the key fob, but did not resolve the issue it is possible that the chip in the key fob is defective. This can happen if your keyfob was dropped, exposed to saltwater, or the touch of dirty fingers.

You'll need to find the tiny "key", which is inserted into the seam to remove the circuit board and diagnose the problem. You will then be able to examine for any corrosion or damage on the chip. To prevent damaging the chip, it's recommended to clean the chip with a new paper towel.

If you aren't sure it is possible to check the battery connector terminals for cracks or breakage. If this is the situation it is possible to solder the terminals back into place can usually bring back functionality to the key fob. You can also examine the buttons for wear or damage. If the buttons are loose, they can be soldered back regardless of whether the button has actually snapped off.

Interference Signals

There's nothing more frustrating than trying to start your car only to see the message "No Fob Detected". It can happen at the most unfavorable situations, like when you're late for work or have to pick up your children from daycare/school. There are some things you can do to find out the root of the issue.

Interference signals can disrupt the remote key fob signal from the vehicle which causes it to not function properly. This can be caused by objects such as weather conditions, buildings, and transmitters operating on the same frequency. Interference can also occur when you have an aftermarket device installed in the vehicle that transmits at the same frequency as the key fob.

The key fob might be damaged if it is exposed to salt water or water. The rubber seals on the electronic chip may be damaged by water, particularly if it is submerged for an extended period of time, like in a swimming pool or at the beach. The chip can stop working and require replacement of the keyfob. If you have a programmable key you can clean the chip with isopropyl Alcohol or an electronic cleaner to aid in its get back to its original functionality. If this does not work the chip, it is likely to be fried and will require to be replaced.

Locking or Unlocking the Doors

The buttons on the keys send electronic signals to a solenoid in the car that then transforms the signal into a mechanical action that locks and unlocks doors. If the door lock is not working, the issue could be a solenoid malfunction that requires some investigation by an expert auto repair shop.

A dead 12 volt can also stop the fob from functioning effectively. This can happen when your battery fails to charge or if the contacts become corroded. This issue can be resolved in just a few minutes by purchasing a new battery.

If the key fob isn't working after you replace the battery or re-program it the problem could be with the receiver module. This device receives radio frequency signals from the key fob and interprets them to control the vehicle's functions. If it malfunctions it could be costly to fix.

To determine if this is the case, start by inserting your spare keys into the key slot and setting the ignition to ON. Press the key fob button twice within 10 seconds, without removing it. The Mazda 3 system will now be able to synchronize the key with your car and allow you to use it as your primary remote for driving. You can program up to three keys in this way.