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Saab Key Programming Saab cars made since 1994 use an immobilizer system that relies on key codes. In order to add a second key, it requires a new transponder, as well as special programming. This is usually done at the dealer with a specialized Tech2 diagnostic tool. The problem is that it can be very costly. Always keep an extra set of keys at hand. Transponder key The transponder is a key that is equipped with an electronic chip. This chip sends a signal when the key is inserted in the ignition. The car then analyzes the signal to determine whether it is the same as that of the key. If the signals are the same the car will then unlock itself and begin. This is a great way to prevent car theft and keep your vehicle secure from thieves. Transponder keys may be an increasingly popular feature for cars, but they are not as secure as traditional metal keys. While the metal component of a traditional key may be cut and copied however, a transponder is secured by an electronic chip. This chip has a unique code that is encoded into the car's system to identify it. The car will recognize the Saab keyfob, and allow it to turn on. However, it can only do this if the key fob is unmodified and has a chip that has been programmed to match it. 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 especially true when you live in a rural area with many car thieves. You can purchase a new key for your Saab by visiting the dealership and not paying their high costs. In the majority of instances, you can get a new key made on-the-spot for less than half the cost you'd pay at a dealer. Wired key Saab cars are usually delivered with two keys. If you own only one, you should purchase an extra key as soon as you can. This is because if you lose it, the car will need a new CIM and the locking cylinders replaced. This could be expensive, especially if you are buying a second-hand car. The next step is to wire the column and row wires to the microcontroller. This is the most difficult part of the project and will require a large amount of soldering. It's not a standard way to go about it, but you should plan how to route and solder 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 rows and column are joined then it's time to connect the key switches. To do this, put a diode on each pin of the key switch and solder it. This will protect the pins that are used for key switches from current and stop them from being shorted. A diode permits current to only flow in only one direction. It comes with a visual indicator, a black band, that indicates which direction current will flow. Sanabria says that a few of the tools available in auto parts stores, such as the Autel MaxiIM IMM608PRO and IM508, can help shoppers or DIY users to program replacement keys and restore immobilizer information. The tools plug into the OBD port and automatically guide the user through the process, making it easier than replacing the computer inside the vehicle. Jump-starting the battery A lot of people keep an assortment of tools in their trunks to jump-start their vehicle in the event of an emergency, but it might not be a good option for vehicles with newer technology. These vehicles are equipped with digital and computer systems that communicate with each other. A surge of voltage when the battery is connected 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 you connect the cables to the one that is disabled. 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 of the black cable to a clean, unpainted metal surface underneath the car's hood. The engine block would be an ideal choice. The black cable is not to be connected to the negative terminal of the dead battery. This could trigger a spark, which would ignite gasoline in the engine compartment. Once the cables are connected, turn on the vehicle you are not using and let it run for about five minutes before you disconnect them in reverse order. Be aware that the battery in your Saab 9-3 is recharged while you drive, so it can take a while for the battery to come back down again. It's a good idea 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 your lost keys are not trying to steal the car. Replacement case Many Saab owners have only one key for their vehicle and if they lose that the cost will be. It's expensive to purchase the key and also requires replacing the CIM or TWICE in the case of older models. It's best to have a spare key in the event of theft or other disaster and the most effective way is to purchase an additional key as quickly as you can. Even even if the key is “new”, it will not function. saab 93 key will charge you the most expensive dollars if you only have one working key. We can reset and reprogram the computer's EEEPROM in order for it to accept a replacement key without the need to replace the entire system. This could help you save a significant amount of money. It's also much less expensive than waiting until you lose your one key.