Changing the Battery in Your 2007 mazda 6 key replacement 3 Key Fob
It’s frustrating to how do i get a replacement mazda key in your car at the end of a long day and find that the key fob is dead. Luckily, this is an easy fix by purchasing an easy battery replacement at a hardware store or big box retailer.
Incorporating a spare key fob to your Mazda 3 can be an affordable solution to free yourself from the hassle of being towed to the dealership and having them re-program your keys.
Battery Replacement
You can replace the battery on your Mazda 3 keyfob at home. However, you should only replace the battery if it fails, or when the key fob displays a message in the multi-information display saying, “Low key fob battery. Replace battery.”
To open the key fob’s case you’ll need a tape-wrapped flathead screwdriver and some patience. Locate a notch or gap in the bottom part of the metal of the Mazda 3’s key fob and then insert the head of the screwdriver to cut off the lower part. Repeat this process for the top part of the metal however, be careful not to scratch the rubber ring on the bottom of the key fob’s case.
There is a slot on both sides of the fob case, where you can find the battery. Use the tape-wrapped flathead screwdriver to gently the case open, beginning with one side and moving to the opposite. Remove the old battery, and put in the new CR2025 and make sure it’s face-up for the correct polarity. 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 verify that it functions by locking and unlocking your doors. If everything is in order you’re now able to use your Mazda 3’s remote capabilities in the road!
Pairing Issues
This could mean that the transmitter in your car may have been damaged. This usually requires the assistance of a professional for repair and will likely require a new replacement key fob.
If you have tried replacing the battery and programming the key fob but isn’t solving the issue, it is possible that the chip in the key fob could be damaged. This could happen if the key fob has been dropped on hard surfaces, exposed to salt water or even touched by dirty hands.
To identify the issue You will need to locate a tiny “key” that is embedded into the seam of the fob which allows you to open it and remove the circuit board. You will then be able to examine for any corrosion or damage on the chip. It is best to use a clean paper towel to avoid damaging the microchip.
If you’re unsure then you should also examine the battery connector terminals for cracks or broken. If this is the case, then carefully attaching them back will usually restore the function of the key fob. Additionally, you can look at the buttons to determine whether they’ve been worn out or damaged. If the buttons are loose, they can be soldered back into place regardless of whether a button has physically snapped off.
Interference Signals
There’s nothing more frustrating than trying to get the engine started in your car and seeing the message “No Fob Detected”. It happens at the worst situations, like when you’re late for work or have to pick up your children from school/daycare. The good thing is that there are a few steps you can take to pinpoint the issue and determine the cause.
Interference signals can cause the remote key fob not to function in a proper manner. This can be caused from things like weather conditions, buildings, and transmitters operating on the same frequency. Interference may occur if your vehicle is equipped with aftermarket equipment that transmits at the same frequency as your key fob.
The key fob could be damaged if it is exposed to salt water or water. Water can penetrate the rubber seals of the electronic chip, especially when the key fob has been submerged in water for a long period of time. This could cause the chip’s function to cease and require replacement of the key fob. If you have a programmable key it is possible to clean the chip with isopropyl alcohol or an electronic cleaner to aid in its return to functionality. If this doesn’t help you can be sure that the chip has fried and requires replacement.
Locking or Unlocking the Doors
The key fob’s buttons send electronic signals to a solenoid in the car that then converts that signal into mechanical action that locks and unlocks the doors. If the door lock isn’t working, the issue could be a solenoid issue that requires investigation with the help of an expert repair shop for autos.
A dead 12 volt battery could also stop the fob from working effectively. This can happen when your battery is not charged or if your contacts become corrosion-prone. The good news is that a new battery is able to fix this problem in just minutes.
If the key fob isn’t working after you replace the battery or program it again the problem could be in the receiver module. The device interprets radio frequency signals transmitted by the key fob to control the vehicle. It can be a costly repair if it malfunctions.
To verify if this is true, place your spare key in the key slot. Then, turn the ignition ON. Press the key fob twice within 10 seconds, but without removing it. The Mazda 3 system will now synchronize the key with the car, and you can use it as your primary remote for driving. This lets you program up three keys.
