Mazda 3 Key Fob Replacement
There are times when an Mazda 3 owner might need to change the battery in their key fob. This is a simple task that you can do yourself.
Find the small button at the back of your key fob. Press the button, then remove the cover.
Lost Keys
Losing your car keys used to be an inconvenience of a minor nature. It was comparatively inexpensive to replace them at any hardware store, dealer or locksmith. Your car's high tech key fob can do more than secure the vehicle and open it. However, this convenience comes at a price - more expensive replacements.
The key fob has a security chip built into it that sends a unique code to the car's system to let you unlock and start the engine. The key fob is also capable of controlling some other features, including closing the windows if you're in a hot parking lot and calling your car to you to make it easier to reverse into an area that is tight (a feature found on some Genesis GV60 and Hyundai Sonata sedans).
Fortunately, Mazda's remotes aren't as expensive as those from other automakers. If you have the right knowledge, you can replace the battery on your key fob by yourself. You'll require a flathead screwdriver as well as the new CR2025 to complete this. Be sure to use the directional buttons along with the red button to unlock and lock the doors prior to changing the battery.
If you're looking to save money on an Mazda 3 key fob replacement find one on eBay that is OEM and does not require programming by a dealer or locksmith. You'll find plenty of options on eBay however they may not be the same design or color as the key fob you currently have.
Lockouts
One of the most devastating things that can happen to a driver is getting locked out of their vehicle. There are, however, a few strategies that drivers can utilize to get back into their vehicle. First, they should call their local Mazda dealership or locksmith. This is a good idea as it's likely be less expensive and faster than calling a tow-truck. The dealer or locksmith will require a key code from the database in order to cut you a new key fob which is usually about $100. It is crucial to secure this code.
If you're stuck outside your vehicle, another thing to do is search for an auxiliary key that is located on the underside. The button is usually smaller and round, but can be hit. This will open the doors of the vehicle and allow the owner to open them by hand.
The emergency override function is another method to gain access to an automobile that is locked. This allows the key fob to override the functions that are disabled by the theft-deterrent system. This will activate the warning lights and sound to verify that the doors, the lid for the fuel filler or liftgate are closed.
Transponder Chips
You'll have to replace it if the key fob has a transponder built into the metal head of the L-shaped key. The chips have an identification code which is used to open your car.
When you insert your key and then turn it to ON the antenna ring transmits the radio frequency energy that is received by the transponder chip inside the metal key. The chip then responds with the code that's transmitted to the antenna ring telling the car that it's an authentic key.
Most Mazdas are equipped with a transponder chip with a rolling code that alters its code each time you turn the key. This means that your key will not work with your vehicle until you have a duplicate that has the exact same code in the ignition.
It's not difficult to make your own replacement key. If you're able to find a working key, place it inside your Mazda and set the ignition to ON. You can copy the information from the key to the second key in case it starts your Mazda. mazda 3 key could also try the eraser function on your key fob to erase the current code, if needed. This method isn't certain to be successful because some transponder chips can fail to function properly.
Programming
The loss of your car keys can be costly and time-consuming. Mazda has made adding and programming a third car key a breeze. This can be done in a couple of steps and you won't have to pay a dealer for this service. You will not have to pay for towing or dealership fees if there is an extra car key.
The first step is to buy a new battery for the fob. You can purchase one at the hardware store or at a big box retailers for around $10. You'll also require a flathead screwdriver in order to open the fob. The screwdriver's handle should fit in a small slot or a space on the back of the fob. Once you've removed the case, you'll need to replace the battery that was in the case with the new one.
Now it's time to set up the new key fob into your vehicle. To do this, simply insert the first working key into the ignition and turn it to ON. For about five seconds, then switch it off. Repeat the process using a second key that works, and then your new (or additional) key. Once you've completed the procedure, your Mazda should now be able to be launched using the newly programmed keys. If not, it might be a problem with the key fob.