Changing the Battery in Your Mazda 3 Key Fob
There's nothing more frustrating than stepping into your vehicle after a long day, and discovering that your key fob battery is dead. This is a simple fix that can be found at a big box retailer or at a hardware store.
A spare key fob for your Mazda 3 is an inexpensive option to not have to take your vehicle to a dealership in order to have them re-program the keys.
Battery Replacement
You can replace the battery on your Mazda 3 keyfob at home. It is recommended to replace it when the battery fails or you notice a message stating "Low keyfob battery" on the multi-information display. Replace battery."
To open the key fob 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 tip of the screwdriver to break off the lower part. Repeat this procedure for the top metal part however, be careful not to damage the rubber ring at the bottom of the key fob's case.
There's a slot each side of the case that contains the battery. Start on the opposite side of the case, and then gently push it open. Remove the old battery and then put in a new CR2025 and make sure it's facing up to ensure proper orientation. Then, put the battery cap back on and then reattach both sides of the key fob case, pressing until you hear them click.
After replacing the battery After replacing the battery, lock and unlock your doors to verify whether the fob works. If everything is in order the Mazda 3 remote features can be used again.
Pairing Issues
If your key fob stops working suddenly, this could indicate that the transmitter in the car is damaged. It is usually a job to a professional and you require a new key fob.
If you've tried to change the battery and reprogramme the key fob, but it's not working the chip inside the key fob could be defective. This could happen if the keyfob has been dropped, exposed to saltwater, or was touched by dirty fingers.
You'll need an extremely small "key" that is inserted into the seam, in order to remove the circuit board to identify the problem. You will then be able to look for any corrosion or damage on the electronic chip. To avoid damaging the chip, it is recommended to use a clean paper towel.
You may also take a close look at the battery connector's terminals and see if they are cracked or broken. If this is the case, then 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 in place and also if a button has physically snapped off.
Interference Signals
There is nothing more frustrating than glancing at an "No Fob Detected" message when trying to start your vehicle. replacement mazda key happens at most inconvenient moments, like when you're running late for work or when you have to pick up children from daycare or school. There are some things you can do to help figure out what's the cause.
Interference signals can cause the remote key fob to cease working in a proper manner. This can be caused by objects like weather conditions, buildings, and transmitters that operate on the same frequency. Interference can occur when 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 water or salty water. Water can penetrate the rubber seals of the electronic chip especially when the key fob is submerged in water for an extended period of time. This could cause the chip to stop working, requiring replacement of the key fob. If you have a programmable key cleaning the chip with isopropyl Alcohol or an electronic cleaner to aid in its return to working. If this does not work the chip, it's likely to be damaged and will need to be replaced.
Locking and unlocking of the Doors
The buttons on the keys send electronic signals to a solenoid inside the car. It then converts that signal into a mechanical action that locks and unlocks the doors. If the door lock doesn't work it could be because of an issue with the solenoid. This will require professional auto repair shops to investigate.
A low-voltage battery can also prevent the fob from functioning correctly. This happens when the battery loses charge or if the contactors become corroded, and stop transferring electricity. 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 change the battery or reprogram it the problem could be in the receiver module. The device receives radio frequency signals from the key fob and interprets them to control the functions of the vehicle. It could be a costly repair if the device becomes defective.
To determine if this is true, place your spare key in the key slot. Then turn the ignition on. Press the key fob twice in 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 this manner.