How to Repair a 2008 Mazda 3 Key Fob
If you have a 2008 mazda 3 key fob, there are a few steps you can take to get it back in working order. First, you should make sure that the batteries in your keys are still working properly. Next, try to start the car with your two working keys.
Replace the battery
If your keyless entry fob is not working properly, you may need to replace the battery. It’s not difficult to do, and it only takes a few minutes. However, it’s best to refer to your owner’s manual to determine the correct type of battery for your model.

First, you’ll need to remove the key from your car. You can do this by using a flathead screwdriver. Then, you’ll need to remove the metal auxiliary key. Afterward, you can reset the key.
Once you’ve removed the auxiliary key, you’ll need to find the location of the keyhole. There’s a slot on the top and bottom of the key, as well as a small slot on the side. Luckily, these slots are fairly easy to find.
Using a flathead screwdriver, pry the half of the key away from the plastic case. This will reveal a rectangular battery slot. Remove the battery.
When you replace the battery, make sure that the positive and negative sides are oriented in the same direction. In the case of a smart key, this means that the positive and negative sides are up and down.
To replace the battery, you’ll need to open the case. You can do this with a tape-wrapped flathead screwdriver. Alternatively, you can use a sharp, thin metal cake tester.
Shut the driver’s side door
When it comes to key fobs and their kin, it’s not always the easiest task to tell the good from the bad. This is especially true when you are faced with a plethora of options. The 2008 Mazda 3 key fob is no different. While the device may be relatively simple to use, it has a few pitfalls to avoid. Its small size also makes it easy to accidentally lock yourself out of your car.
There are a few ways to get the device to work on your own. You can either try to reprogram it yourself or call in the help of a professional. For the latter, you will want to ask your chosen repairperson to follow the instructions from the key fob manual, which should be on your glove compartment lid or door sill.
For starters, you will need to leave the ignition on. After that, it’s time for the real work. With the key fob in hand, the next step is to insert it into the vehicle’s key slot. If it’s been used before, you’ll need to have the vehicle’s owner’s manual on hand to prevent a mishap.
If all else fails, you will need to make the short trip to the nearest Mazda dealer. The dealership will have a plethora of experts on hand to help you out.
Start a car with two working keys
If you have a 2008 Mazda 3 key fob, you will know that it has several functions. For instance, you can use it to unlock the doors, start the car, or even open the trunk lid. Some models also have a push-to-start feature. This is called the E-Z Passive System. It will also turn off the hazard warning lights when the alarm system is armed.
Depending on your model, you may have a hidden key slot. To check, remove the cover on the key slot and you will have a small opening to insert a key into.
You can also get a remote unlocking app. Most manufacturers offer apps to allow you to unlock your car using your smart phone. The My Chevrolet mobile app allows you to lock and unlock the doors from your smartphone.
You can also purchase a spare key. Often, a physical key can be used to unlock and start the car. However, a key fob can also do this.
If your car is equipped with the Advanced Keyless Entry (AKE) feature, you can have it programmed by a dealer. They can program it in a matter of 15 seconds.
If you don’t want to pay for a service call, you can replace your keys yourself. There are a few things to consider though. First, make sure you have two working keys. Secondly, don’t forget to change the ignition.