How to Reprogram a Mazda Key Fob

Mazda provides key fobs that allow you to control many functions without even having the physical key in your hands. When they're working, they can be very cool.

When you press the button on your key fob it transmits a signal to the receiver unit located in the car. The receiver unit encrypts this signal and if it is in order, it performs the function you're looking for.

Programming

Modern key fobs are complicated and difficult to comprehend. They allow you to lock and unlock your vehicle from far away, and they're extremely secure due to how the signal between them and program your vehicle is encrypted. It's difficult to believe something so small could control the entire vehicle, but it's the truth.

The key fob is equipped with an antenna and transponder that uses radio waves to communicate with the receiver in your vehicle. When you press the key fob, it broadcasts an unique code that is compatible with your car's receiver. This lets the key fob transmit the signal without being recognized by anyone else and therefore cannot be used to start your vehicle.

A Mazda key fob is actually two things it's a key module, and remote control. You'll need to program both parts of the key fob if want to be able to start your vehicle. It's not difficult but you'll need some tools.

You'll first have to take off the fob's metal key. There should be a slot either side of the case. Start with one side of the case, and move to the other using the tape-wrapped flathead. Be gentle so as to avoid scratching the case.

Reprograming

Key fobs are tiny remote you can use to lock and unlock your Mazda vehicle. They can also start your vehicle if it's equipped with a key fob. They're very useful but can be easily lost. It is important to know how to change the programming of your Mazda key fob if you have lost it.

Radio frequencies are the foundation of how Mazda key fobs function. The signal transmitted by the key fob is encrypted in order to shield it from being accessed by unauthorised users. If someone is able to intercept the signal it won't be able to start your vehicle.

To reprogram a Mazda key fob, you'll need have two working keys. If you don't have spare keys, you'll need to take it to a dealership for reprogramming. It is also necessary to know the code number that's printed on the plate attached to the key set. Write down this number and store it in a safe location.

Begin by inserting the initial key into the slot. Then switch the ignition on. It should remain in place for approximately five seconds before taking out the key. Repeat the process with a second working key. Once the key is programmed you can use it in your Mazda. Make sure you test it before putting it away.

Replacement

Today's modern key fobs can do more than just unlock and start your car. They are also a great convenience feature as well as a deterrent to theft. These extra features come at the cost of a price: should you lose your key fob you'll have to pay hundreds of dollars.

Certain car manufacturers permit drivers to modify their own key fobs, though this process can vary widely. Owners' manuals should contain specific instructions for each model. You should also think about keeping an extra remote in your glove box or center console, as many used car buyers will pay more when you have two working key fobs.

In addition to locking and unlocking, some of the latest key fobs are able to roll down windows at the touch of a button. This is particularly useful during hot days or when you need to let your car breathe before entering it. The fob can be used to call your vehicle or to auto-park it, which is helpful if you are in an unfriendly spot.

If your key fob has run out of battery, you'll get a warning message on your dashboard. This is a good opportunity to consider replacing the battery with a fresh one. Take off the key for the metal fob and note the small slots on either side of case. Use a tape-wrapped flathead screwdriver to open the case by gently opening it, starting on one side and then on the other side. Be careful not to damage the release tab made of plastic or you'll have a difficult to put the case back together.

Disassembly

Modern Mazda vehicles come with a range of conveniences for their owners with key fobs which allow you to unlock your doors and start your vehicle remotely. Like all other devices powered by batteries, can be worn out over time. That's why it's important to know how to change your Mazda key fob's battery. It's simple cheap, quick, and easy. You can also do it yourself rather than going to an auto dealer service center in Eagan.

The first step in replacing the batteries for the Mazda key fob yourself is to remove the cover made of metal from the front. The metal plate has a code stamped on it. It is best to keep this in a safe place and not in the vehicle.

Make use of a tape-wrapped screwdriver pry the case open, starting from one side, and then the other. Use a gentle approach to avoid damage. After the case has been opened take the battery out, taking care not to scratch the rubber ring that it rests on.

Once you have the old battery removed, put a new battery in its place and snap the case back on. Be sure to inspect the rubber ring on which it sits, and replace it if required. The batteries can be purchased at your local Rio Rancho auto parts or hardware store, or through our University Mazda parts department.