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Saab Key Programming Saab cars that were built prior to 1994 have an immobilizer feature made up of coded keys. In order to add a second key, it requires a new transponder, as well as special programming. This is usually done by the dealer with a specialized Tech2 diagnostic tool. It can be costly. It is recommended to always have an extra set of keys on hand. Transponder key The transponder is a key equipped with an electronic chip. The chip transmits a signal when the key is inserted in the ignition. The car then analyzes the signal to see whether it is the same as that of the key. If the signals are in sync then the car will be able to unlock and start. This is a great way to protect your vehicle from theft. Transponder keys are a common feature in automobiles, but you must be aware that they're not as secure as traditional metal keys. While the metal portion of a traditional key could be cut and copied the transponder is protected by an electronic chip. The chip is equipped with an individual code that is embedded into the car's computer to identify it. When a Saab key fob is used the car recognizes it and allows it to turn on. However, it can only do this if the key fob has a non-modified chip that has been programmed to match the original. The car won't start if the key is not programmed to match. It's crucial to ensure that you have a spare key for your Saab. This is particularly important especially if you reside in a rural location where there are numerous car thieves. The good news is that it's possible to find a replacement key to your Saab without needing to visit an auto dealer and pay the hefty prices they ask. In most cases, you can have a new key created on-the-spot for less than half the price of what you'd pay at a dealer. Wired key Saab cars typically come with two keys when they're new. If you have only one, it's a good idea to get an extra key fob as soon as is possible since if you lose it, the car will require the replacement of a CIM unit, and the locking cylinders will need to be replaced. This can be costly, especially if you are purchasing a used car. The next step is to connect the row and columns wires to your microcontroller. This is the most laborious aspect of the project and will require a lot of soldering. It's not a standard way to go about it, but you must plan how to route and connect each column and row. For this keyboard, there are 5 rows and 17 columns. So there will be 22 microcontroller pins and wires to connect. After the columns and rows are soldered together, it is time to connect the key switches. Solder a diode on each key switch pin. This will shield the pins from current, thus preventing them from being cut off. A diode permits current to only flow in one direction. It has a visual indicator that is black, that indicates the direction in which current will flow. Some of the tools available at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 — can help customers in the shop, or even DIY customers in some cases program replacement keys and restore lost immobilizer information, Sanabria says. The tools connect to the OBD port and guide the customer through the process, making it more simple than replacing the computer in the vehicle. Jump-starting the battery The majority of people have a set of jumper cables in their trunk in case of emergency however, jumping a battery on modern cars might not be the best choice. These cars have a variety of electronic devices and computers that communicate with each other. A voltage surge while a battery is hooked up to another one could damage the components and render your vehicle undriveable. Start the vehicle that is working and allow it to run for around two minutes before connecting the cables to the battery that is not working. Attach the red clip on the positive terminal of the battery that is good. (It will read “POS” or “+”.) Attach the other end of the black cable to a clean, unpainted metal surface beneath the damaged vehicle's hood. An engine block is a good option. The black cable is not to be connected to the negative terminal of the dead battery. This could result in sparks that could ignite gasoline in the engine compartment. After the cables have been connected, start the vehicle and let it run for approximately five minutes. Then, disconnect them in reverse. The battery in your Saab 9-3 will be recharged while you drive. It will take some time for it to recharge again. It's a good idea purchase a spare key fob as soon as you can, because replacing the only functioning one requires the installation of a new computer module and special programming to convince it that the lost keys aren't attempting to steal the car. Replacement Case Saab owners usually have only one car key, and if that is lost, they will be charged. The reason is that it's expensive to buy a new key, and this involves replacing the CIM (Column Integration Module) or TWICE on older models, as well as programming. In the event of theft, or any other calamity, it is best to have a spare key. Even even if the key is “new” it will not work. Most locksmiths can't help you when you only have one working key and the dealer will charge you high fees to replace the computer in your car to make a replacement. However, we can reset and re-program your computer's EEPROM to prepare it to accept a new key without replacing the entire system. saab key can save you a significant amount of money. It's also a lot cheaper than waiting until you lose your one key.