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Saab Key Programming Saab cars made since 1994 feature an immobilizer system that relies on a set of keys. A new transponder is required for the addition of an extra key, as well as special programming. This is usually done by the dealer using a Tech2 diagnostic tool. This can be expensive. This is the reason why you should always have a spare key at hand. Transponder key The transponder keys are keys equipped with an electronic chip. It sends a signal to the car when it is placed in the ignition. The car then analyzes the signal to see whether it is the same as the one in the key. If the signals are in sync, the car will unlock and begin. This is a great way to deter auto theft and keep your vehicle secure from thieves. Transponder keys may be a popular addition to cars, but they are not as safe as traditional keys made of metal. The metal portion of a traditional key can be easily cut and copied, whereas a transponder has an electronic chip which protects it. The chip has an individual code that is encoded into the car's system to identify it. When a Saab key fob is used the car recognizes it and allows it to turn on. The car can only recognize the key fob if it is equipped with an unmodified chip and programmed to match. The car won't start if the key is not programmed to match. It is essential to have a spare Saab key. This is particularly true especially if you live in a rural location that has many car thieves. The good news is that it's possible to obtain a replacement key for your Saab without having to go to an auto dealership and pay the high prices they ask. In the majority of instances, you can get a new key created on-the-spot at a fraction of the cost you would pay at dealerships. Key for Wired Saab cars usually come with two keys when they are new. If you own only one, you should purchase an extra key as soon as you can. This is because, if it's lost, the car will need an entirely new CIM and the locking cylinders replaced. This could be expensive especially if you're purchasing a used vehicle. The next step is to connect the wires for columns and row to your microcontroller. This is the most tedious part of the project and will require lots of soldering. There's no standard way to accomplish this, however it is crucial to plan the way you'll route and solder the columns and rows. There are 22 microcontroller pins and wires to connect for this keyboard. It has 5 rows and 17 column. Once the rows and columns are soldered, it's the time to connect them to the key switches. Solder a diode to each key switch pin. This will shield the pins on the key switch from current and stop them from being shorted. A diode lets current only flow in only one direction. It has a visual indicator that is black, that indicates which direction current will flow. Sanabria states that some of the tools offered in auto parts stores, like the Autel MaxiIM IM608PRO and the IM508, can help customers who are shopping or DIY customers to program replacement keys and restore immobilizer information. The tools connect to the OBD port and automatically guide the user through the process, making it more simple than replacing the computer in the vehicle. Jumpstarting the battery The majority of people have an assortment of tools in their trunks to start a vehicle in the event of an emergency, however it might not be the best option for vehicles with newer technology. These cars are equipped with a variety of digital and computers that communicate with each other. A surge in voltage while the battery is connected to another could cause damage to these components and leave your car undriveable. Start the vehicle that is working and allow it to run for around two minutes before you connect the cables to the battery that is not working. Attach the red clip to the positive terminal on the good battery (it will have “POS” or “+” on it). Attach the other end of the black cable to a clean, unpainted metal surface underneath the disabled car's hood—the engine block is a good choice. The black cable is not to be connected to the negative terminal of the dead battery. This could create sparks, which could ignite the gasoline in the engine compartment. Once the cables are connected, start the vehicle that has been disabled and let it run for about five minutes before you disconnect them in reverse order. Be aware that the battery of the Saab 9-3 will be charged during your drive, which means it may take some time for the battery to go back to its original level. You should purchase another key fob when you can. Replacing saab key fob programming that works requires the installation and programming of a new computer chip. Replacement Case Many Saab owners have only one key for their vehicle and if they lose it, it's going to cost them. The reason is that it's not cheap to buy a new key, and it requires replacing the CIM (Column Integration Module) or TWICE on older models, and programming. In the event of theft, or any other disaster, it is best to have a spare key. But don't buy a used key even when it's “new.” Keys that are claimed as new from sellers selling aftermarket keys won't be effective and are almost guaranteed to fail at the crucial moment. Most locksmiths aren't able to help in the event that you only have one working key and the dealer will charge you high fees to replace the computer in your vehicle to create a replacement. We can, however, reset and re-program the computer's EEPROM to accept the new key without having to replace the entire system. This could help you save a significant amount of money. It's less expensive than waiting until you loose the only key.