Mazda 3 Key Fob Replacement

Mazda 3 owners may need to replace the battery in their keyfob in time. You can easily perform this task yourself.

To change the battery, look for the small button on the back of the key fob. Press the button, then remove the cover.

Lost Keys

Before the 1990s the 1990s, losing your car keys was an annoyance that was not a major inconvenience. You could replace mazda key them at any hardware store, locksmith, or dealer and it was cheap to do so. Your car's top-of-the-line key fob is able to do more than secure the vehicle and open it. However, this convenience comes at a price - more expensive replacements.

The key fob comes with an embedded security chip in it that sends a specific code to the car's computer in order to enable you to open and start the engine. The key fob is capable of controlling various other functions, like opening the windows when you're in a hot spot and summoning your car to make it easier to reverse into the tight spots (a feature available on some Genesis GV60 and Hyundai Sonata sedans).

Mazda's remote controls aren't nearly as expensive as other automakers'. With a little know-how you can replace the battery on your key fob by yourself. You'll require a flathead screwdriver as well as a brand new CR2025 for this. Use the red and directional buttons to lock and unlock your doors prior to changing the batteries.

If you want to save money on the cost of a Mazda 3 key fob replacement, look for one online that is OEM and does not require programming by a dealer or locksmith. There are a variety of options available on eBay however they may not have the same design or color as your current key fob.

Lockouts

One of the worst things that can happen to a driver can be getting locked out of their vehicle. Thankfully, there are a few tricks that drivers can apply to gain access back into their vehicle. First, they should consider calling the local locksmith or mazda key fob replacement dealership. This is a good idea for a variety of reasons, and it's likely to be less expensive and more efficient than calling a tow truck. The dealer or locksmith will require a key code from the database to cut you a new key fob which will usually cost about $100. It is crucial to ensure the security of this code.

Another thing that drivers can do when stuck outside of their car is to check the underside of the key fob to find an additional button. The button is usually smaller and round, but can be hit. This will unlock the doors of the vehicle and allow the owner to open them manually.

The emergency override function is a different method to gain access to a locked car. This allows you to use your key fob to override functions that have been disabled by the theft deterrent system. This will trigger the hazards lights and sound to prove that the doors, the lid for the fuel filler or liftgate have been shut.

Transponder Chips

If your key fob has a transponder chip embedded in the head of the metal key with the L shape, you'll need a locksmith or a dealer to replace it. These chips contain a unique identification code which is used to open your vehicle.

When you insert your key and turn it to ON the antenna ring sends out the radio frequency energy that will reach the transponder chip within the key's metal. The chip responds by sending an encryption code to the ring. This tells the car that the key is in good condition.

Most Mazdas have a transponder chip with a changing code that changes every time you turn it. This means that your key will not work with your vehicle until you have a second copy that has the exact same code in the ignition.

It's not difficult to create your own replacement keys. If you can locate an actual key, you can insert it in your Mazda and turn the ignition to ON. If the key starts your car, you'll then be able to copy the information from it to the other key that works. You can also use the eraser function on the key fob to erase the current code, if required. It's important to keep in mind that this method isn't guarantee that it will work, as some transponder chips from recycled systems might not work correctly.

Programming

Losing your car key is a costly and time-consuming experience. Luckily, Mazda has made it easy to add and program a third key. This can be accomplished in a few simple steps, and you don't need to pay an agent for this service. You can avoid paying for towing charges or dealership fees if you have an additional car key.

First, you'll need to find a replacement battery to the fob. You can purchase one at a big box retailer or a hardware store for about $10. You'll also require a flathead screwdriver in order to open the fob. The screwdriver's head must fit into a small slot or a space on the back of the fob. After you've removed your case you'll have to replace the old battery with a new one.

Now it's time to program the new key fob in your vehicle. Insert the first key that is working into the ignition and turn it on. Wait for about five seconds and then turn the ignition off. Repeat the process using a second working key, then your new (or spare) key. Once you've completed the procedure, your Mazda should have the ability to be started using the newly programmed keys. If not, it could be a problem with the key fob.