Mazda 3 Key Fob Replacement
There are instances when an Mazda 3 owner might need to change the battery in their key fob. This is a simple job you can perform yourself.
To change the battery, look for the small button located on the back of the key fob. Press it and then take off the cover.
Lost Keys
Before the 1990s losing your car keys was an annoyance that was not a major inconvenience. You could replace keys at any hardware store, locksmith shop, or dealer, and it was fairly affordable to do this. Your car's top-of-the-line key fob does more than just lock and start the vehicle. However, that added convenience comes with cost - higher prices for replacements.
The key fob contains an electronic security chip that sends an unique code to the computer in the car that allows it to unlock and start it. The key fob is also able to control other functions, such as the windows being rolled down in a hot parking area and requesting that the car come to you so that you can reverse out of a tight spot (a feature that is available on certain Genesis GV60 sedans and Hyundai Sonata sedans).
Luckily, Mazda's remote fobs aren't nearly as expensive as those from other automakers. You can even replace the battery of your key fob yourself, with a bit of know-how. You'll require a flathead screwdriver along with a new CR2025 to complete this. Make sure to use the directional buttons as well as the red button to lock and unlock the doors prior to changing the battery.
If you're looking to cut costs look for a Mazda 3 keyfob online that is OEM. It doesn't need programming by a locksmith or dealer. eBay has many options, but they might not be the exact color of your current key fob.
Lockouts
A driver being locked out of their car is among the worst scenarios that could happen. Luckily, there are few techniques that drivers can employ to gain access back into their vehicle. First, they should try calling their local locksmith or Mazda dealership. This is a good idea because it's less expensive than calling a tow truck and will be faster as well. Locksmiths or dealers must purchase a key code from the database to be able to create a new fob. It will cost around $100. This is the reason it's essential to save the code in a safe place.
The other thing that people can do when they are stuck outside of their vehicle is to check the underneath of the key fob to locate an additional button. There is typically an oblong, small button that can be press and held. This will unlock the vehicle's doors and allow the driver to open them manually.
The emergency override feature is a second method to gain access to an unlocked vehicle. This allows you to use the key fob to bypass any functions that are suspended by the theft deterrent system. This usually triggers the hazards warning lights and make a to confirm that the doors, lids for fuel-filler, or liftgate are closed.
Transponder Chips
If the key fob you have has an embedded transponder chip in the head of the L-shaped key, you'll have to visit a locksmith or dealer in order to have it replaced. These chips come with a unique identification code that can be used to start your vehicle.
When you insert your key and then turn it to the ON position the antenna ring sends out a burst of radio frequency energy that gets to the transponder chip that's in the metal key. The chip responds by sending a code to the antenna ring. This tells the car that the key is in good condition.
Most Mazdas have transponder chips with a code that is changing every time you turn it. This means that your key will not function with your vehicle until you have a second copy with the exact code in the ignition.
It's not too difficult to create your own replacement key. If you find an original key that works then insert it into your Mazda. Then turn the ignition on. If the key starts your vehicle, you can copy the data from it onto the other key that works. You can also try using the eraser method on the key fob to erase the current code, if needed. It's important to keep in mind that this method is not 100% guaranteed to work, since some recycled transponder chips might not function correctly.
Programming
The loss of your car keys can be an expensive and time-consuming experience. Fortunately, Mazda has made it easy to program and add an additional key. You can do this in only a few steps and you will not need to pay the dealer for the service. If you have an extra car key, this is the ideal way to avoid paying for a tow and dealership costs.
First, you'll need to purchase an additional battery for the key fob. You can buy one at the big box retailer or hardware store for around $10. To open the fob, you'll require a flathead screwscrew. The screwdriver's head must fit into small slots on the back of the fob. After removing the case replace the old battery.
Now mazda 2 battery key can program your new key fob. Insert the first key that operates into the ignition and turn it ON. After about five seconds, and then turn off the ignition. Repeat the process with a different working key, then your new (or spare) key. After you've done this, your Mazda should now be able to be started using the newly programmed keys. If it's not, it could be a problem the key fob.