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Saab Key Programming Saab cars manufactured since 1994 have an immobilizer feature that is based on codes for keys. A new transponder is required in order to enable the addition of an additional key, and special programming. This is usually done by the dealer using a Tech2 diagnostic tool. The problem is that this could be quite costly. Always keep an extra set of keys 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 is able to check if the signal matches the one on the key. If the signals match the car will then unlock and start. This is a great way to deter car theft and keep your vehicle secure from thieves. Transponder keys are an increasingly popular feature for automobiles, but they are not as safe as traditional metal keys. While the metal portion of a traditional key could be cut and copied but a transponder key is protected by an electronic chip. The chip is a unique code that's programmed into the car's computer in order to identify it. When a Saab key fob is used, the car recognizes it and allows it to turn on. replacement saab car keys will only recognize the key fob if it has a chip that is unmodified and has been programmed to match. The car won't start when the key isn't programmed to match. It's important to make sure that you have an extra key for your Saab. This is especially important especially if you live in a rural region that has many car thieves. You can obtain a replacement key for your Saab by going to the dealership and not paying their high costs. In the majority of cases, you can have a new key made on-the-spot at a fraction of the cost of what you would pay at dealerships. Wired key Saab cars usually come with two keys when new. If you have only one, you should get an additional key as quickly as you can. This is because if the key is lost and the car is damaged, it will require a new CIM and the locking cylinders replaced. This can be expensive, especially for used cars. The next step is to connect the row and columns wires to your microcontroller. This is the toughest aspect of the project and it will require a lot of soldering. There isn't a standard method to do it, but you need to plan how to connect and solder each column and row. There are 22 microcontroller wires and pins that you can connect to this keyboard. It includes 5 rows and 17 column. After the columns and rows are soldered, it's time to connect them to key switches. Solder a diode to each key switch pin. This will protect the pins from current, thus preventing them from being cut off. A diode can only allow the current to flow in a single direction, and it has an indicator of black color that indicates the direction current will flow. Sanabria says that a few of the tools that are sold in auto parts stores, like the Autel MaxiIM IM608PRO or IM508, can help shoppers or DIY users to program replacement keys and restore data from the immobilizer. The tools connect to the OBD port and guide the user 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 however, jumping a battery in newer vehicles might not be the most efficient option. These vehicles have many digital and electronic devices that communicate with each other. A voltage spike when a battery is connected to another could cause damage to the components, rendering your car undriveable. Start the vehicle you are using and allow it to run for around two minutes before you connect the cables to the disabled one. Attach the red clip to the positive terminal on the good battery (it will have “POS” or “+” on it). Attach the other end to a clean unpainted metal surface underneath the hood of the affected car. The engine block is an excellent alternative. Do not connect the black cable to the negative terminal on the dead battery, as it could ignite an ignition that ignites the gasoline in the engine bay. After the cables have been connected, you should start the car and let it run about five minutes. Then, disconnect them in reverse. Keep in mind that the battery on the Saab 9-3 gets recharged during your drive, which means it will take a while for the battery to come back to its original level. It is a good idea to purchase a spare key fob as soon as you can, since replacing the only working one requires the installation of a brand new computer module and a special program to convince it that your lost keys aren't trying to steal the car. Replacement Case Saab owners usually only have one car key, and if that is lost, they'll be charged. The reason for this is that it's costly to add a new key, and it involves replacing the CIM (Column Integration Module) or TWICE on older models, and programming. In the event of theft, or any other disaster it is recommended to have an extra key. Don't buy a secondhand key even it's “new.” Keys that are claimed to be new from aftermarket sellers will not be effective and are almost guaranteed to fail at the crucial moment. Most locksmiths aren't able to help if you have only one working key and the dealer will charge you high fees to replace the computer in your car for a replacement. We can reset and reprogram the computer's EEEPROM for it to accept a new key without the need to replace the entire system. This could save you a significant amount of money. It's also cheaper than waiting until you lose your one key.