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Saab Key Programming Saab cars manufactured since 1994 feature an immobilizer system based on a set of keys. A new transponder is required in order to enable the addition of a second key, as well as special programming. This is usually done by the dealer using the Tech2 diagnostic tool. This can be expensive. This is why it is important to always keep a spare key in your possession. Transponder key The transponder can be described as a key equipped with an electronic chip. This chip sends out a signal when the key is put in the ignition. The car is able to check if the signal matches the one on the key. If the signals are the same the car will then unlock itself and begin. This is a great way to prevent auto theft and keep your car secure from thieves. Transponder keys are a popular addition to cars, but they're not as safe as traditional metal keys. While the metal part of a conventional key can be cut and copied but a transponder key is protected by an electronic chip. The chip has an unique code that is programmed into the car's computer to identify it. The car will recognize the Saab keyfob, and allow it to turn on. However, it can only do this if the fob has an unmodified chip that has been programmed to match it. The car will not start when the key isn't programmed to match. It's essential to ensure that you have an extra key for your Saab. This is particularly important especially if you reside in a rural area, where there are a lot of car burglars. The good news is that it's possible to obtain a replacement key for your Saab without having to go to a dealership and pay the high costs that they demand. You can get a replacement key created on the spot for less than half of what you would spend at dealerships. Wired key Saab cars usually come with two keys when they are new. If you have only one, you should purchase an extra key as soon as you can. This is because if you lose it and the car is damaged, it will require a new CIM and the locking cylinders replaced. This can be costly especially for cars that are used. The next step is connecting the wires for columns and row to your microcontroller. This is the most challenging part of the project and requires a significant amount of soldering. It's not a standard way to do it, but you should think about how to route and solder each column and row. For this keyboard, there are 5 rows and 17 columns. This means there will be 22 microcontroller wires and pins that you need to connect. After the rows and column are joined, it is time to connect the key switches. To do saab key programmer , put a diode on each pin of the key switch and solder it. This will protect the pins from current, and prevent them from being shorted. The diode will only allow the flow of current to be in one direction, and has a an indicator of black color that indicates which way the current will flow. Sanabria states that some of the tools offered in auto parts stores, such as the Autel MaxiIM IMM608PRO and IM508 will assist customers who are shopping or DIY users to program replacement keys and restore immobilizer data. The tools connect to OBD ports and help the customer through each step, making the process easier than replacing the car's computer. Jump starting the battery A lot of people keep a set of jumper cables in their trunk for emergencies, but jumping a battery on modern vehicles might not be the best option. These cars have a variety of electronic devices and computers that communicate with one another. A surge of voltage when the battery is connected to another battery could damage the components and render your vehicle unusable. Start the vehicle you are using and allow it to run for around two minutes before connecting the cables to the non-working one. Attach the red clip to the positive terminal of the battery that's good. (It will say “POS” or “+”.) Attach the other end to a clean, unpainted metal surface under the hood of the disabled vehicle. The engine block is an excellent option. Don't connect the black cable to the negative terminal on the dead battery, since this could trigger an ignition source that ignites gasoline in the engine bay. After the cables have been connected, you need to start the vehicle and allow it to run for around five minutes. Then, disconnect the cables in reverse. The battery in your Saab 9-3 will be recharged while you drive. It will take a while for it to recharge again. It is a good idea to invest in a spare key fob as soon as you can, because replacing the only functioning one requires the installation of a new computer module and a special program to convince it that the lost keys aren't trying to steal the car. Replacement case Many Saab owners have only one key for their car and if they lose it, key, it will cost them. It's expensive to add keys and will require replacing the CIM or TWICE in the case of older models. In the event of theft or any other catastrophe it is advisable to have a spare key. However, don't purchase a secondhand key even the case that it's “new.” Keys that are claimed to be new from aftermarket sellers will not work and are almost guaranteed to fail at the critical moment. The dealer will charge you the most expensive dollar if you only have one working key. We can, however, reset and re-program your computer's EEPROM to accept a new key without replacing the entire system. This could help you save a significant amount of money. It's more affordable than wait until you loose the only key.