Mazda 3 Key Fob Replacement
There are instances when a Mazda 3 owner might need to change the battery in their key fob. You can easily perform this task yourself.
Find the small button on the back of your key fob. Press the button, then remove the cover.
Lost Keys
The loss of your car keys was a minor inconvenience. It was fairly inexpensive to replace them at any hardware store, dealer, or locksmith. Your car's top-of-the-line key fob does more than just secure the vehicle and open it. However, that added convenience comes with the cost of replacements.
The key fob is equipped with an encryption chip that sends an unique code to the computer of the car that allows it to unlock and start it. The key fob can also control other features such as rolling down your windows when you are in hot parking spaces and summoning the car to you, allowing you to reverse into a tight space (a feature available on some Genesis GV60 sedans and Hyundai Sonata sedans).
Mazda's remote controls don't cost nearly as expensive as other automakers'. You can even change the battery in your key fob yourself, with a bit of knowledge. To accomplish this, you'll require the smallest flathead screwdriver an updated CR2025 battery, and your key fob. Make sure to use the directional buttons as well as the red button to unlock and lock the doors before changing the battery.
If you're looking for a way to save money look for an Mazda 3 keyfob online that is OEM. It doesn't need programming by an authorized locksmith or dealer. You'll find many options on eBay but they might not be the same logo or color as the key fob you currently have.
Lockouts
A driver who is locked out of their vehicle is among the most unpleasant scenarios that could occur. There are a few tricks drivers can use to gain access into their car. The first step is calling their local locksmith or Mazda dealership. This is a great option because it's likely to be less expensive and faster than calling a tow-truck. The dealer or locksmith will need to buy a key code from the database to cut you a new key fob, which is usually around $100. This is the reason it's essential to keep the key code in a safe location.
Another thing that drivers can do when stuck outside of their vehicle is to look at the underneath of the key fob in search of an auxiliary button. The button is usually a small round one that can be activated. This will open the doors to the vehicle and allow the driver to open them manually.
The emergency override feature is a second way to gain access to an unlocked vehicle. This allows the key fob to take over the functions that are suspended by the theft-deterrent system. It will typically activate the hazard warning lights and beep sound for confirmation that the doors, lids for fuel-filler or liftgate are locked.
Transponder Chips
If your key fob has the chip for transpondering built into the head of the key with the L shape, you'll need to go to an authorized locksmith or dealer to have it replaced. The chips have an unique identification code that can be used to start your car.
The antenna ring emits a burst radio frequency energy when you insert your key in the metal and turn it on. This energy reaches the chip transponder in the key. The chip responds by sending an encryption code to the ring. This tells the car that the key is valid.
Most Mazdas are equipped with a rolling code transponder chip which changes its code each time you turn the key. mazda 2 spare key means that the key you're using won't work on your vehicle until you've got a duplicate using the same code inside the ignition cylinder.
It's not that difficult to make your own replacement keys. If you're able to find an operational key, put it inside your Mazda and set the ignition to ON. If the key starts your vehicle, you can copy the information to the working key. You can also try using the eraser process on the key fob to erase the current code, if required. It is important to remember that this method isn't 100% guaranteed to work, since some transponder chips from recycled systems might not work correctly.
Programming
Losing your car keys is costly and time-consuming. Mazda has made programming and adding the third car key simple. You can do this in just a few steps and you will not need to pay the dealer for the service. You can avoid paying for a tow or dealership fees if there is an additional car key.
You'll need to buy a new battery for the key fob. You can buy one from the hardware store or at a big box retailers for around $10. To open the fob, you'll need a flathead screwscrew. The screwdriver's head should fit into a small space or a space on the side of the fob. After removing the case replace the old battery.
It's time to add the new key fob for your vehicle. To do this, insert the first working key into the ignition and then turn it on. Wait about five seconds, and then switch it off. Repeat the process with another key that is working, and then the new (or extra) key. After you've completed this, the newly programmed key should be able to start your Mazda. If not, there may be another issue with your key fob or vehicle.