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Replacing a Subaru Car Key With an Unresponsive Button If you have an Subaru car key that has an unresponsive button, it might be time to replace the battery. The service department at Capitol Subaru can help you with this simple procedure. Open the case for the key fob and locate the circuit board for the transmitter. Look for two 8-digit sets and write the first one down on a piece paper. Keyless entry With the keyless entry system, you can unlock the doors and trunk of your Subaru without using a mechanical key. Using a radio signal, the car's computer will recognize the presence of the key fob within a certain distance, and send a signal to unlock your doors or open your trunk. You can also turn on or off the engine using this system. Certain advanced systems also offer remote starting, smartphone connectivity and alarms. A reputable locksmith will be able to create an alternative Subaru key fob if you have lost yours. They can also make high-security keys that are difficult to duplicate or laser-cut keys which are more intricate and require specialized equipment to create. They can help you pick the right key for your car, and install it for you. Find out what subaru smart key of key you have. Then, open the fob's case and examine the circuit board of the transmitter. There are likely to be two or three sets of numbers with 8 digits on it. Write down the number, and then close the fob case. You'll hear a chime and see the dome lights flash. Transponder key If you own a Subaru that has keyless entry, then you will need to learn how to replace the battery in the key fob. You can use a flathead screwdriver to remove the case of your car key fob and remove the old battery. Then you can replace it with a new one. Place the new battery with the correct side of it in the case. When energized by a transponder key (a combination of the words transmitter & responder) is equipped with a microchip that communicates with the ECU of your vehicle. The chip contains a digital serial number that's unique to your car. It is also an extra security measure to stop key duplicates. A locksmith can program a transponder key for you, but it's best to use an automotive locksmith that is equipped and knowledgeable to do so correctly. Incorrectly done, it can cause damage to the transponder chip in your car key, and could cost you money in repairs. To program a key, you must open and close the door to the driver and then turn your vehicle's ignition off and on. Repeat the process 10 times, and you'll hear the panel sound chime after the tenth. Keys with a side-cut Many automobiles come with side-cut keys or laser-cut keys. These keys are more secure than traditional keys for cars. The edges of the keys are shaped in a way that is in line with the profile of the lock tumblers. This kind of key is hard to duplicate and requires a specially designed key duplicating machine to do this. To program a Subaru Key Fob, find the circuitry for transmitters inside the key fob. (Instructions are usually included in your owner's guide). Look for one or more sets of 8-digit numbers on the board. Make a note of these numbers and keep them in your pocket. Next, get into the driver's chair and close your door. Place your new key into the ignition and turn the knob to the first position. After ten seconds, the car will begin to unlock and start. Once you have a replacement fob and you have it, you can replace the battery in the key fob of your Subaru without difficulty. Locate a small niche in the seam between the front and back of the fob's enclosure. Utilize a flathead screwdriver on an extremely small scale to tear the encasement off, and then take out the smaller piece inside. Replace the old battery with a brand new CR 2025, making sure that it is properly inserted. Last-cut key They are more convenient than traditional keys due to the fact that they can unlock the doors to your car at a distance of many yards. The fobs can also be used to begin the car. The latest models of keys have a carbon chip in them that emits an electronic signal. This adds an additional layer of security to your Subaru keys, making it more difficult for thieves to take. Some drivers prefer having an old-fashioned key as a backup. If your key fob stops working and you want to replace it, you can try replacing the battery. If this doesn't work, you can contact Hanson Subaru or a trusted locksmith. If your Subaru is an older model, it may have an engraved key. This key is similar to Honda's high-security HO01 as well as HO03. This type of key is four-tracked and externally cut. The key can be duplicated by using standard tools found in hardware stores and locksmiths. However it does not include any onboard programming. This kind of key is sold at the majority of dealerships. However it will cost more than an edge-cut version. Key code Subaru key fobs are fitted with a security microchip that can be used to lock or unlock your vehicle. When the key is inserted into the ignition, it sends an alert to a device on your dashboard. This signal is specific to the key, and if it's not recognized, the engine will not start. If your key fob isn't functioning, it may be the time to replace the battery. To program a Subaru car key, first look up the eight-digit number for your vehicle. The code is located on the original ringtag or on Subarunet. Once you have the code, you can open and close your driver's door, then press the lock button a number of times equal to the number in the code. Next next, insert the new key into the ignition and move it to the “on” position but do not start the engine. When the key fob begins working, the security light should cease to flash. If not, you should replace the battery, or contact a professional locksmith to troubleshoot the problem.