Mazda 3 Key Fob Replacement

There are times when a Mazda 3 owner might need to change the battery on their key fob. This is a simple job that you can do yourself.

To replace the battery, press the small button on the back of the key fob. Press it and then remove the cover.

Lost Keys

Losing your car keys was an issue of minor importance. You could replace keys at any hardware store, locksmith shop, or dealer, and it was fairly cheap to do so. Today, your car's high-tech key fob does more than just unlock and start your car, and that added convenience comes at a cost and that's more expensive replacements.

The key fob contains an encryption chip that sends an exclusive code to the computer of the car to allow it to be unlocked and start it. The key fob can also control other functions, such as rolling down your windows in the hottest parking space and requesting that the car come to you, allowing you to reverse into a tight space (a feature that is available on certain Genesis GV60 sedans and Hyundai Sonata sedans).

Mazda's remote controls aren't nearly as costly as other car manufacturers'. If you have the right knowledge, you can replace the battery in your key fob on your own. To accomplish this, you'll require the smallest flathead screwdriver an updated CR2025 battery, and your key fob. Use the red and directions buttons to lock or unlock your doors prior to changing the batteries.

If you want to save money on the cost of a Mazda 3 key fob replacement search for one on the internet that is OEM and doesn't require programming by a locksmith or dealer. eBay offers a variety of options, but they may not be the exact color of your existing key fob.

Lockouts

One of the most horrible things that can happen to a driver is getting locked out of their car. Luckily, there are a few tricks that drivers can use to gain access back into their vehicle. First, they should try calling their local locksmith or Mazda dealership. This is a good idea as it is likely to be less expensive than calling for a tow truck and will be quicker too. The locksmith or dealer will need to buy a key code from the database in order to create an additional key fob, which typically costs around $100. This is why it's vital to save the code in a secure place.

If you are stuck outside your car, one of the things to do is search for an additional button on the bottom. The button is usually small and round that can be press. This will open the doors of the vehicle, allowing the driver to open them manually.

Another way to get into a vehicle that is locked is using the emergency override feature. This allows you to use the key fob to override functions that have been suspended by the theft deterrent system. This will trigger the hazards lights and sound to ensure that the doors, lids for the fuel filler or liftgate are closed.

Transponder Chips

You'll have to replace it if the key fob is equipped with a transponder embedded in the metal head of the L-shaped key. These chips are equipped with an unique identification code that allows you to start your car.

When you insert your key and turn it to ON the antenna ring transmits a burst of radio frequency energy that is received by the transponder chip inside the key's metal. The chip responds by sending an encrypted message to the antenna ring. This informs the car that the key is legitimate.

The majority of Mazdas have a transponder chip with a rolling code that alters its code each time you turn the key. This means that the key will not work with your vehicle until you have a copy with the exact same code in the ignition.

It's not difficult to make your own replacement key. If you can locate an operational key, put it inside your mazda key fob replacement and turn the ignition to ON. If the key starts your car, you'll then be able to copy the data from it onto the other key that works. If you're in need, you can also make use of the eraser on your key fob to erase the code. It is important to remember that this method is not 100% guaranteed to work, since some transponder chips recycled from the past may not respond correctly.

Programming

Losing your car keys can be an expensive and time-consuming process. Mazda has made programming and adding a third car key easy. You can do this with just a few steps and you will not need to pay the dealer for the service. You will not have to pay for towing or dealer charges if you have an extra car key.

First, you'll need purchase a replacement battery for the fob. You can buy one from an hardware store or a big box retailers for around $10. To open the fob, you'll need an screwdriver with a flat head. The screwdriver head should fit into small slots on the back of the fob. After removing the case replace the battery that was in it.

Now you can program your new key fob. Insert the first key that is working into the ignition and turn it ON. For about five seconds, you should wait and then turn the ignition off. Repeat the process with another key that is working, and then your new (or additional) key. After this is done and the key that you have programmed should be able to start your Mazda. If not then there could be a problem with the key fob, or the vehicle.