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Replacing a Toyota Key Fob Your Toyota key fob is loaded with an array of sophisticated technology that allow it to function. This includes remote locking and smart keys, among other features. It's not surprising that it can malfunction. It's easy and inexpensive to replace the battery in your Toyota keyfob. Follow the steps below. Battery Toyota key fobs are powered by a tiny battery, which powers the electronics and transponder chip that allows you to unlock your vehicle. The battery inside your key fob will eventually get worn out and will require replacement. Replacing the battery in a Toyota key fob is easy and inexpensive, and it will make your key fob functional. The case of your key fob by inserting a flat tool like a screwdriver or coin into a notch alongside the case. This will break the two halves of the case for your key fob. On the side of one of the key fob's half, you will see the circuit board and the battery. Lift the circuit board gently to reveal the battery, and then remove it from the case. Note down a photograph or the type of battery and where it sits inside the case, so you can replace it. Replace the battery with a brand new CR 2032 3V battery, and then place it inside the key fob with the negative side facing down. Reassemble the case and test the keyfob to ensure it works. If it doesn't work Repeat the process, making sure that the battery and connections are in contact. If the key fob still doesn't work after all of this, it could need to be programmed. Case Sometimes the case of your Toyota key fob will need to be replaced. This is usually the case in the event that the key fob has been damaged in any way, or if the battery dies. The replacement of the Toyota key fob is relatively easy. You can locate the replacement case online or in an in-store hardware store. However, replacing the electronics within is a bit more difficult. For assistance, call the Toyota dealership. To begin, you must take your key out of the case. This is typically done by pressing an appropriate button or sliding the latch. After you have removed the key and inspected the case, you will see a small slot or notch on the side of the case. Insert a flat tool such as a screwdriver into this notch, and then open the case. After the case has been opened then carefully lift the circuit board to reveal the battery. Note the type of battery and where it is in the case. It is necessary to replace it. You can buy a new battery from most Lakeland stores. Take the battery you have in the past or photo as a reference to ensure that you purchase a replacement battery that is the same type. Once you have your replacement battery, carefully place it inside your key fob. Then test it to confirm that it is working. Electronics Your key fob's electronic components are what instruct it to unlock your vehicle and start the motor. The components comprise a transmitter, a receiver, and the actual key itself. These devices are all powered by the battery in your key fob. If the battery fails it will not be capable of accessing your vehicle. Fortunately, it's easy for drivers to replace the battery in their Toyota key fobs. This will restore the function of your key fobs, and also prevent theft. If your key fob won't work, it could be because of an issue with the module. Contrary to the transponder chip that is found in a toyota aygo replacement key they aren't as fragile and can be replaced for a less cost. It is important to use an automotive repair shop that is experienced in this field to ensure the replacement is done properly. To replace the battery on your Toyota key fob, you'll need to open the case. This is accomplished by inserting a flat tool like an a miniature screwdriver or coin into a prominent notch on the case. After inserting the tool, you'll have to gently pull apart the two halves of the key fob case. When the case is removed it is possible to remove the circuit board and view the battery. Take a photo of the battery so you can compare it to the new one when you purchase the replacement. Once you have removed the battery from the old one and replaced it with a new CR 2032 3V battery with the negative side facing down. Make sure that the new battery is the same type as the old one. Reassemble the case after installing the new battery, and test it. If your key fob doesn't work after reprogramming the device, it may need to be replaced. This will need to be done by a professional. Therefore, it is best to have this done at an authorized Toyota dealer. toyota aygo key replacement If you've replaced the battery in your key fob but it still doesn't work the issue could be with the circuit board. In this instance it's recommended to buy a brand new Toyota key fob. You can buy one online, from a locksmith or at the dealership. You can program your key yourself if you're comfortable. The first step is to have an uncut Toyota transponder key. You can purchase it from a dealer, locksmith, or online. If you have a new transponder, you need to insert it into the ignition, but do not turn it. Press and release both the brake and gas pedals at the same moment. Do this up to 20 seconds or until the dashboard security light goes off. You can then replace the original key and test it. Toyota key fobs come with an intricate system that utilizes different signals to communicate with the car. These keys are designed to only work with the vehicle they are put into. Reprogramming the keys can be expensive and time-consuming as they must be in compliance with legal requirements. You might need to have the circuit board of your toyota replacement key fob reprogrammed at an auto dealer if it's not working. It's not an inexpensive option however it will ensure that the key works properly and protects your car from theft. If the issue isn't caused by a damaged battery, it may be more expensive to repair than replacing the whole key fob. You can replace the battery inside your key fob from Toyota in the event that it is not working or has died. It is a simple process, but you will need a specific tool to access the inner workings on your toyota key fob. To open the case, you need remove the clip on the back of the fob and then gently remove it. Then, replace the old battery with a brand new 3V CR2032 battery, making sure you put it in the right place. After putting the battery in the case, you must close the case and then snap it back together.