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Saab Key Programming Saab cars manufactured since 1994 have an immobilizer feature built on coded keys. A new transponder is required in order to enable the inclusion of an additional key, as well as special programming. This is usually handled by the dealer using a Tech2 diagnostic tool. The problem is that this could be very expensive. This is why you should always keep a spare key in your possession. Transponder key The transponder is a piece of key equipped with an electronic chip. This chip sends a signal when the key is inserted in the ignition. The car checks to see if the signal matches the one on the key. If the signals match then the car will be able to unlock and begin. This is a great method to avoid car theft and keep your vehicle safe from thieves. Transponder keys may be an extremely popular accessory for cars, but they are not as secure as traditional metal keys. The metal portion of a traditional keys can be easily cut and copied, whereas transponders have an electronic chip that safeguards it. This chip contains a unique code programmed into the car's computers to identify it. The car will recognize the Saab keyfob and permit it to turn on. The car can only recognize the key fob if it has a chip that is unmodified and has been programmed to match. The car won't start in the event that the key has not been programmed to match. It's important to make sure that you have a spare key for your Saab. saab key is particularly true when you live in a rural area that is home to many car thieves. You can get a brand new key for your Saab by visiting the dealership without paying their pricey costs. You can get an original key made on the spot for less than half the cost you would pay at the dealership. Wired key Saab cars typically come with two keys when they are new. If you only have one, you should get an additional key as quickly as you can. This is because if you lose it and the car is damaged, it will require an entirely new CIM and the locking cylinders replaced. This can be costly particularly if you are buying a second-hand car. The next step is to wire the wires of the column and row to the microcontroller. This is the toughest part of the project and will require a lot of soldering. There is no standardized way to do this, but it is important to think about the way you'll route and solder the columns and rows. There are 22 microcontroller wires as well as pins to connect for this keyboard. It has five rows and 17 columns. Once the rows and columns are soldered, it's the time to connect them to key switches. To do this, you need to place a diode on each pin of the key switch and then solder it. This will shield the pins from current, thus preventing them from being shortened. A diode permits current to only flow in only one direction. It has a visual indicator of a black line that shows the direction in which the current will flow. Some of the tools you can find at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 — could assist customers at the shop or DIY customers in certain instances replace keys in the program and restore lost immobilizer data, Sanabria says. The tools plug into OBD ports and guide the user through each step making the process simpler than replacing the car's computer. Jump-starting the battery Most people keep an item in their trunks to start a vehicle in an emergency, but it might not be the best idea for cars with more modern technology. These cars have a variety of computers and digital devices that communicate with one another. A surge of voltage when batteries are connected to another battery could damage the components making your car unusable. Connect the cables to the vehicle that is working. Allow it to run for two minutes. Attach the red clip to the positive terminal on the battery that is good (it will have “POS” or “+” on it). Attach the other end to a clean, unpainted metal surface beneath the hood of the affected car. The engine block is an excellent alternative. The black cable should not be connected to the negative terminal of the dead battery. This could trigger sparks, which would ignite the gasoline inside the engine compartment. After the cables have been connected, you should start the vehicle and let it run about five minutes. Then, disconnect them in reverse. Be aware that the battery of the Saab 9-3 will be charged during your drive, which means it may take some time to get the battery back to its original level. You should consider purchasing a second key fob, when you can. The replacement of the one that works requires the installation and programming of a new computer chip. Replacement Case Many Saab owners only have one key for their car and if they lose that the cost will be. The reason is that it's not inexpensive to add a new key, and this involves replacing the CIM (Column Integration Module) or TWICE on older models, plus programming. It is best to have a spare key in case of theft or other disaster the best solution is to purchase an additional key as early as you can. Even if the key is “new”, it will not work. The dealer will charge you the highest dollar if you have only one working key. We can, however, reset and re-program your computer's EEPROM to prepare it to accept the new key, without replacing the entire system. This can save you a lot of money. It's also cheaper than waiting until you lose the only key.