How to Add, Change, and Reprogram a Mazda 3 Spare Key
Whether you dropped your key fob on the ground or it stopped working, it's best to have a spare key on hand. This article will teach you how to add, change or reprogramme the Mazda 3 keyfobs.
A word of warning Certain keys require programming by a professional locksmith or dealer, whereas others don't. Use only genuine Mazda replacements to replace your key fob.
How to add a spare key
You can also add an additional key if you don't have a spare key, or in the event that you break your existing one. You'll need to use a flathead screwdriver, and an CR2025 battery. Once you have these items then it's time to open up the key fob to change the battery. Locate the auxiliary key release. It's on the underside of the metal part and is easy to find. The back cover should slide off the moment you press the button. Next, place the screwdriver's head into the notch or the space on the top of the metal piece and then pull it off.
Insert your spare key or a new one into the slot following the removal of the accessory key. Switch the ignition on and wait for about five seconds, then turn it to OFF. This will add the new information on the key to the system, allowing it to start your car in the future.
You can only program three keys to your Mazda 3. You don't want to have to use more than two key fobs in order to start your vehicle. This is a safety measure to prevent unauthorized users from activating your keys and launching your car.
How to reprogram an unrepaired key?
If you have a spare key, it's a good idea know how to program it in the event your original key gets stolen or lost. This will stop unauthorised people from getting into your car and causing damage to it. This process is compatible with any Mazda however, you'll require two keys that work to begin the reprogramming. If you don't own two working keys, it's best to take your Mazda to the dealer to get this done.
Start by getting into the driver's seat, close all the doors, except the one that is open. Place the working key in the slot, and then turn the ignition to ON. For five seconds, take the key out and repeat the process with a second key.
After programming your new key, you'll have three keys that be able to start your car in the near future. Before storing each key, make sure that it's functioning properly.
It's a good idea to buy an extra Mazda 3 key fob, especially if you're someone who has a tendency to lose their keys or has other issues with it. It's possible to find one on the internet or at your local automobile store, but be sure to read reviews prior to purchasing so you can avoid getting an item that isn't compatible with your vehicle.
How do I change the battery on a Spare Key
It's awful to discover that your key fob has failed, and you are unable to unlock your vehicle. It's easy to replace the battery yourself and save money at the dealer.
Press the auxiliary key button at the back of the keyfob. This will detach the key's metal cover and reveal two slots on the opposite side of the case. Put the flathead screwdriver in one of these slots and gently remove the two sides of the case. Once the battery is fully exposed, take it out of the case and place it in a place where you won't forget it.
Before you begin, be sure that you have a brand new replacement battery. https://www.thekeylab.co.uk/mazda-car-keys/ can be purchased at any store selling batteries or from a Mazda dealer in Winter Garden. The right kind of battery is crucial to ensure that your key fob functions correctly.
Next, put the replacement battery in place and replace the battery cap. Be careful not to scratch the rubber ring on which the battery rests. Finally, press the two halves of the key fob until you hear the sound of a click.
How to Reset the Keyless Entry System
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The key fob in your Mazda 3 is not only an added convenience, but it's also an important security feature. If you lose your key or had it stolen, the car will not start even if you've got the spare key fob. The key fob needs to be reprogrammed by the dealer to make it work again. It can be a costly and frustrating ordeal therefore it's a great idea to learn how to reset the system yourself.
Disconnect the battery from the system for 15 minutes. This will clear any residual electric current from the onboard computer. Then, 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. The ignition should be turned off after approximately five seconds. The information from the key will be transferred to your vehicle's computer, and the new fob will be able to start your vehicle in the future. You can program any number of fobs you desire but only one can be used at any specific time. This stops unauthorized individuals from copying your key and gaining access to your car. You can purchase a new keyfob from the internet, however it must be cut and programmed by an authorized dealer.
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