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Replacing a Subaru Car Key With an Unresponsive Button Replace the battery in case you have a Subaru key that isn't responding. Capitol Subaru's Service Department can assist you in this simple procedure. Open the key fob and locate the circuit board. Find two sets of 8 digits and write the first set down on a piece paper. Keyless entry Keyless entry allows you to unlock the doors and trunk of your Subaru without the need for the traditional mechanical keys. The car's computer detects presence of the key fob via radio signals and then sends a signal unlocking the doors or opening the trunk. You can also turn on or off the engine using this system. Certain advanced systems provide mobile phone connectivity, alarms and remote starting. A reputable locksmith can design an alternative Subaru key fob if you have lost yours. They can design high-security keys that are difficult to duplicate or laser-cut keys that have more complex designs and require specialized equipment to make. They can also help you choose the appropriate key for your car and even install it for you. Find out what type of key you have. Then, open the fob's case and look at the transmitter circuit board. There is likely to be one or two sets of 8-digit numbers on it. Close the fob case and write down the number. You'll hear a sound on the instrument panel and see that the dome lights blink. Transponder key If you have a Subaru with keyless access, you'll need to know how to change the battery on the key fob. You can use a screwdriver with a flat head to open the case of your car key fob and take out the old battery. Then you can replace it with a fresh one. Place the new battery with the correct side of it inside the case. When it's activated with a transponder, a key (a combination of the words transmitter & responder) includes a microchip that communicates with the ECU of your vehicle. The chip has a digital serial number that is unique to the car you own. It's also a security feature which prevents duplicate keys. A locksmith can program a transponder-key transponder for you, but it's best to use an automotive locksmith that has the tools and expertise to do it correctly. Incorrectly done, it can damage the transponder chip inside your car key, and could cost you money in repairs. To program a key, simply open and close the door of the driver and then turn your vehicle's ignition off and back on. Repeat the procedure ten times and you'll hear the panel begin to chime after ten times. Keys that can be cut to the side More and more vehicles come with side cut keys, also known as laser-cut keys. These are a more secure version of the traditional keys for cars. subaru keys lost are shaped to match the contours of the lock's tumblers. This type of key requires a special machine to duplicate. To program a Subaru Key Fob, locate the circuitry for transmitters inside your key fob. (Instructions are usually found in your owner's guide). Then, look for two or three sets of numbers (8-digits) on the board. Note these numbers down to keep them in your pocket. Then, get in the driver's seat and close your door. Then, place your new key in the ignition and turn it to the first position. After ten seconds, the car will begin to unlock and then start. It is easy to change the battery in your Subaru key fob after you have new fob. Find a small groove in the seam between front and back of the fob's enclosure. Use a flathead screwdriver with smaller scales to pull the encasement from its place, and then take out the smaller piece inside. Replace the old battery by a new CR2025, ensuring that it is properly inserted. Last-cut key These fobs are more convenient than traditional keys as they can unlock the doors of your car from a distance of several yards. The fobs can also be used to get your car started. The latest keys include a carbon chip that emits a signal electronically. This is an additional layer of security that makes your Subaru more difficult to take. Some drivers prefer to have an old-fashioned key for backup. If your key fob ceases to function then you can replace the battery. If this doesn't work then you should contact Hanson Subaru or a trusted locksmith. If your Subaru is a model that is late it could have keys that are laser-cut. This key is similar to Honda's high-security HO01 as well as the HO03. This type of key has four tracks and is externally cut. The key can be duplicated using standard tools from locksmiths and hardware stores. However it doesn't include any onboard programming. This kind of key is offered at the majority of dealerships. However, it will cost you more than an edge-cut version. Key code Subaru key fobs come with a security microchip that can be used to unlock or lock your vehicle. When the key is inserted into the ignition, it transmits an alert to a device on your dashboard. The unique signal from the key must be acknowledged by the dashboard receiver to start the engine. If your key fob isn't functioning it could be the time to replace the battery. To program a Subaru car key, you must first locate the eight-digit code for your vehicle. The code is available on the original ring tag or on Subarunet. Once you have the code, you can open and close the door to your car, then press the lock button a number of times equal to the digits in the code. Then, insert the new key into the ignition and switch it to the “on” position, but don't start the engine. The security light should stop blinking once the key fob begins to function. If not, replace the battery or call a professional locksmith to troubleshoot the issue.