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Replace Toyota Car Key Batteries If your Toyota key fob starts slowing down, you might need an upgrade to the battery. It is simple to replace the battery of a Toyota keyfob battery, but you will have to open the case. Locksmiths and dealerships offer key replacement services. They are focused on speed and accessibility, making the process for customers. Rekeying If you're having issues with your car key fob, this simple solution can save you the trouble of replacing the entire device. Instead of purchasing a new key fob, or relying on a less reliable option, you can have your Toyota keys reset to work with another existing key. This is a quick and simple procedure that guarantees no one else has access to your vehicle. Car keys have many complex components, including transponder chips that communicate with the car's immobilizer system. The key fob also contains a receiver as well as a physical key and codes that allow it to operate your car's ignition and locks. When one or more of these parts fail it is crucial to get them fixed as soon as you can so that you can drive safely. Depending on what caused the issue, it could be necessary to replace the entire key fob, or only internal components like the transmitter or battery. There are several options when it comes time to replace your Toyota key. You can choose the one that is best for your needs. You can get your Toyota keys replaced by a professional locksmith, or go to the local dealer to have a new set made. Regardless of which route you take, it's important to provide the locksmith with all relevant information regarding your Toyota vehicle, including the year and model. The dealer also needs to confirm that you are the owner of the vehicle before they can cut a new key. Rekeying your Toyota keys is much cheaper than replacing them completely. This involves changing the code that operates the lock to match that of a different key, so it can only be opened with the new key. This is useful in the event that you have a spare key or the keys you have are starting to wear down due to regular use. If you have a key that has been rekeyed it will continue perform as normal in the event that all electronic components are functioning properly. If you've lost or taken your key, you'll need to replace the entire key fob. Transponder Chip Replacement If you have a Toyota car key with a transponder chip, you need to replace it if your vehicle's immobiliser system isn't able to recognize it when it is inserted into the ignition. The transponder chip inside the key transmits a unique code to the car's computer system and the system then validates this code to verify that it is legitimate and authorized. If the code isn't valid, the system will prevent the car from starting. Transponder keys are more effective in preventing thefts than the standard remote key. However it doesn't mean that the car impossible to steal; if an experienced or skilled thief is able to use these systems, they could still hot wire a car that has a transponder-equipped key and then turn it on. toyota key is that if the chip isn't working it can be replaced by an expert locksmith or your local car dealership. The key fob must be opened and the green circuitboard in the case removed. A new battery can then be installed inside the case, and the key fob must be shut and tested to make sure it works properly. You can access the key fob yourself with the built-in blade, or a flat screwdriver. Both tools fit in the small slot on the case. Once you have accessed the circuit board in green, note the type of battery it uses (most models will use a CR2032 type battery), and then replace it with a brand new one. Close the case and test it. Although the key fob is relatively expensive to replace, it's far less expensive than cutting the entire key and programmed. Although many car dealers charge a fee for replacing broken or lost keys however, you can get a better deal by using a professional locksmith or a private car locksmith. When contacting these services, it is important to provide as much information about the vehicle as possible including the make and model, year, and VIN. Key Fob Battery Replacement If you have a working key but it doesn't turn on your car, it could just need a new battery. You can replace the battery yourself if you are familiar with how to do it, or visit your local Toyota dealership to get a fast and inexpensive service. Remove your key from the fob. If it isn't able to slide out easily, you could use a latch or a button to open the case. You may need a flat tool or a screwdriver to get in. If you're using a screwdriver, insert it into the little groove on the back of the fob, and then twist. After you have opened the case, search for tiny circuit boards with a built-in battery. Take note of the kind of battery and where it is located in the case. This will aid in finding a replacement. It's a good idea to take a photo of it using your smartphone to refer to later. Most key fobs are powered by a coin-style battery, which is usually a CR2032-type battery found in the majority of hardware stores or big box retailers. Replace the old battery, making sure to insert it correctly. Pushing the lock/unlock and start buttons should work, but in the event that it doesn't, open it back up and check that the new battery is properly inserted. When you're ready to put your key fob back together, be sure that the clip above the battery is closed. If not, then open it again and lift the clips with a screwdriver. Be careful not to damage the case or any of its components including the small plastic clip that holds the battery. Some key fobs come with clips that cover the circuit board. Make sure you lift them gently, and not forcefully. When you're finished take the two halves of the key fob together and test it. If it still doesn't work you'll have to take your owner's guide to a battery expert or a dealer for assistance. You may be able buy an entirely new fob from the dealer however, it will cost more than having it rekeyed. Lost Key Replacement It's best to call a locksmith or dealer immediately if you lose your car key. In the beginning you'll need to collect all the details regarding your Toyota including its model, year, make and VIN. You'll also require a valid photo identification and evidence of ownership. Once you have all the required information ready, you can begin the process of obtaining an alternative Toyota car key. The process of getting a new key fob for your Toyota is more complicated than you might think. The process requires special programming that works with the immobilizer system inside the vehicle. This will prevent theft and illegal hot-wiring of the vehicle. The dealer will need computers to reprogram the new key. This will disable the engine immobilizer. Transponder chips are embedded in the keys of many modern vehicles to deter theft. Toyota was among the first automakers utilize this technology, making their cars more secure than they ever were. However this technology has made it difficult to obtain replacement keys, and when you lose your primary key it will cost more to replace it than in the past. Visit the dealer to get new keys. They'll require the key code number and the VIN, which is located in your owner's certificate or on the driver's door jamb. The dealer will then deactivate the engine immobilizer, and then create an entirely new key for you, which should be ready to use within a couple of hours. You can also purchase an extra key for your Toyota on eBay or at some automotive stores, but it will be more difficult to program it to the security features of your car. The spare key might not be compatible with your vehicle's transponder chip and could cause problems with the immobilizer. Keep a spare Toyota key in your pocket always to prevent any anxiety in the event that you lose your keys or they break. Make sure you check your insurance policy for coverage of lost keys. This could help you recover expenses associated with buying a new key. It's also a good idea to compare costs between different sources and ensure you're not being overcharged.