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How to Add, Change, and Reprogram a Mazda 3 Spare Key
If you've dropped your key fob on the ground or it just stopped working, it's always recommended to keep a spare key handy. This article will show you how to add, alter and re-programme your Mazda 3 keyfobs.
Be aware that some keys require programming from professional locksmiths, while others don't. Make sure you only use official mazda key cutting replacements for your key fob.
How to Add a Spare Key
If you're not fortunate enough to get a spare key from the dealership when you purchase your Mazda 3 or accidentally break the one you have do not fret -- there's still a way to add another key. You'll need a flathead screwdriver and the CR2025 replacement battery. Once you've got these items you can open the key fob and replace the battery. Locate the key release auxiliary. The button is located on the underside the metal part. It's easy to locate. The cover that covers the back should come off the moment you press the button. Then, put the screwdriver head into the notch at the top or in the space, and take the metal part away.
Once the auxiliary key is removed, insert your new or spare key into the slot. Switch the ignition on and wait for five seconds, then turn it to off. This will allow the system to recognize the new key and start your vehicle in the future.
You can only program three keys in your Mazda 3. The most important thing is to have more than two working key fobs and not be in a position to get your car started. This is a safeguard to prevent unauthorized users from activating your keys and then starting your vehicle.
How to Reprogram a Spare Key
If you have a spare key it's best to know how to program it if the original key you had is lost or stolen. This will stop unauthorized persons from getting into your car and causing damage to it. This method should work on any mazda lost key however you'll need two working keys to begin the reprogramming. If you don't have two keys that work, you should take your car to a dealer to have this done.
Start by stepping into driver's position and close all the doors with the exception of the one that is open. Turn the ignition on and insert the first functioning key. Then wait five seconds before taking out the key. Repeat with the second key.
After programming your new key, you should have three keys that start your car in the future. Check each key to make sure that they're working properly before placing them away.
It is advisable to purchase a spare mazda card key 3 remote, especially if your car is prone to issues. You can buy one online or at your local automobile retailer, but make sure to read reviews before buying so that you aren't purchasing one that's not compatible with your vehicle.
How do I change the battery on a Spare Key
It's depressing to find out that your key fob has died and you're in a position to not unlock your car. It's a good thing that it's simple to replace the battery and save yourself some cash at the dealership.
The first step is to press the auxiliary key button on the back of the key fob. This will remove the metal key that is used as an auxiliary key, and expose slots on both sides of the case. Put the flathead screwdriver in one of these slots, and gently pry apart the two parts of the case. Once the battery is fully exposed, remove it and put it away somewhere safe from being lost.
Before you begin, be sure that you have a brand new replacement battery. You can find these at any store that sells batteries or at a Mazda dealer near Winter Garden. The correct battery is crucial to make sure that your keyfob functions correctly.
Next, put the replacement battery in its place and then replace the cap on the battery. Be careful not to damage the small rubber ring the battery is placed on. Then, press the two halves of the key fob together until you hear the sound of clicking.
How to Reset a Keyless Entry System
The Mazda 3 key fob is not just a convenient feature. It's also an important security feature. If you lose your key, or have it stolen, the car will not start even if it has the spare key fob. This is because the key fob needs to be reprogrammed by the dealership to work once more. It's a difficult and expensive ordeal. Therefore, it's best to learn how you can reset the system.
Remove the battery from the system for 15 minutes. This will eliminate any remaining power from the on-board computer. Next, disconnect the LF-ECU and demand switch connectors. Verify that the connections are in good order between the terminals.
To program a new key, or a spare, insert it into the slot and set the ignition to ON. Put the key in for around five seconds and then switch off. The information from the key will be added to your vehicle's computer, and the new fob will be able start your vehicle in the future. You can program up to three fobs, but you should only use one at a time. This will prevent unauthorized people from stealing your key and getting access to your vehicle. You can purchase a replacement key fob online, however you'll need to visit an expert locksmith or dealer to cut it and get it programmed.