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Saab Key Programming Saab cars that were built prior to 1994 come with an immobilizer system based on coded keys. A new transponder is required for the addition of an additional key, as well as special programming. This is usually done by the dealer with a specialized Tech2 diagnostic tool. The issue is that this could be extremely expensive. This is why you should always keep a spare key in your possession. Transponder key The transponder is a type of key with an electronic chip. This chip sends out a signal when the key is placed in the ignition. The car is able to check whether the signal matches with the one on the key. If replacement saab 9-3 key are the same the car will be able to unlock itself and begin. This is a great way to stop car theft and keep your car safe from thieves. Transponder keys are a popular feature in vehicles, but you should be aware that they are not as secure as classic keys made of metal. The metal part of the traditional key is easily copied and cut, but transponders are protected by an electronic chip which protects it. This chip has a 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 is equipped with a chip that is not modified that has been programmed to match the original. The car will not start when the key isn't programmed to match. It is crucial to have an extra Saab key. This is particularly important if you reside in a rural region that has numerous car thieves. The good news is that it's possible to find a new key for your Saab without needing to visit an auto dealership and pay the high costs that they charge. You can get an original key made on the spot at a fraction of the cost you would spend at dealerships. Key for Wired Saab cars typically come with two keys upon purchase. If you have only one, it's best to acquire an extra key fob as soon as is possible as if you lose it, your car will require the replacement of a CIM unit, and the locking cylinders need to be replaced. This can be expensive especially for cars that are used. The next step is connecting the wires of columns and row to your microcontroller. This is the most difficult part of the project and will require a good deal of soldering. It's not a common way to do it, however, you should determine how to route and connect each column and row. There are 22 microcontroller pins and wires to connect for this keyboard. It has five rows and 17 column. Once the rows and columns are soldered, it's the time to connect them to key switches. To do this you must place an inverter over each key switch pin and solder it. This will shield the pins from current and prevent them from getting shorted. A diode only allows current to flow in one direction, and has a an indicator in black that indicates the direction in which current will flow. Sanabria says that some of the tools offered in auto parts stores, including the Autel MaxiIM IM608PRO and the IM508 are able to assist customers who are shopping or DIY users to program replacement keys and restore data from the immobilizer. The tools connect to the OBD port and automatically guide the customer through the process, making it easier than replacing the computer inside the vehicle. Jump-starting the battery Most people keep a set of jumper cables in their trunks for emergency situations, but jumping a battery in newer automobiles might not be the best option. These vehicles are equipped with digital and computer systems that communicate with one another. A surge of voltage when batteries are connected to another battery could damage the components and render your vehicle unusable. Start the working vehicle and allow it to run for approximately 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 to a clean, unpainted metal surface under the hood of the affected vehicle. The engine block is an excellent alternative. Do not connect the black cable to the negative terminal on the dead battery as this could trigger an ignition spark that ignites the gasoline in the engine bay. Once the cables are connected the disabled vehicle and allow it to run for around five minutes before disconnecting them in reverse order. The battery in your Saab 9-3 will recharge as you drive. It may take a while it to return to its original state. You should invest in another key fob as soon as you can. Replacing the original one that works requires the installation and programming of a brand new computer chip. Replacement Case Many Saab owners only have one key for their vehicle and if they lose it, they'll be charged. The reason for this is that it's expensive to buy a new key, and that involves replacing the CIM (Column Integration Module) or TWICE on older models, in addition to programming. It's recommended to have a backup key in case of theft or any other catastrophe and the most effective way is to buy an extra key as early as you can. Don't purchase a used key, even when it's “new.” Keys that are claimed-new from sellers selling aftermarket keys won't work and are almost guaranteed to fail in 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 prices to replace the computer in your vehicle to create a replacement. We can reset and reprogram the computer's EEEPROM for it to accept a new key without having to replace the entire system. This can help you save money. It's also less expensive than waiting until you lose your only key.