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Saab Key Programming Saab cars built since 1994 use an immobilizer system that relies on coded keys. In order to add a second key, it requires a new transponder, as well as special programming. This is usually done by the dealer using a Tech2 diagnostic tool. saab replacement key can be expensive. This is why it is important to always have a spare key at hand. Transponder key The transponder key is a key equipped with an electronic chip. It sends a signal to car when it is placed in the ignition. The car then examines the signal to see whether it is the same as the one on the key. If the signals are in sync, the car will unlock and start. This is a great way to prevent car theft and keep your vehicle secure from thieves. Transponder keys can be an extremely popular accessory for automobiles, but they are not as safe as traditional metal keys. The metal component of a traditional key can be easily copied and cut, but a transponder has an electronic chip which protects it. The chip contains a unique code that is programmed into a car's computer order to identify it. When a Saab key fob is used the car recognizes it and allows it to turn on. The car will only recognize the key fob if the device has a chip that is unmodified and programmed to match. If not, the car will reject the key and won't start. It's crucial to ensure that you have a spare key for your Saab. This is especially important especially if you reside in a rural area where there are numerous car thieves. You can obtain a replacement key for your Saab by going to the dealership without paying expensive costs. You can have the replacement key on the spot at a fraction of the cost you would spend at the dealership. Key for Wired Saab cars usually come with two keys when they're new. If you have only one, you need to purchase an additional key as soon as you can. This is because if it's lost and the car is damaged, it will require an entirely new CIM and the locking cylinders replaced. This can be expensive especially for used vehicles. The next step is connecting the wires for columns and rows to your microcontroller. This is the most challenging part of the project and will require a great deal of soldering. There's no standard way to do it, however, you should think about how to connect and solder each column and row. There are 22 microcontroller wires and pins to connect for this keyboard. It has five rows and 17 column. After the rows and column are soldered together It is now time to connect the key switches. To do this, put a diode over each pin on the key switch and then solder it. This will shield the key switch pins from current and prevent them from being shorted. A diode lets current only flow in one direction. It features a visual indicator with a black band that shows which way current will flow. Sanabria states that a number of the tools offered in auto parts stores, including the Autel MaxiIM IM608PRO and the IM508, can help customers who are shopping or DIY customers to program replacement keys and restore data from the immobilizer. The tools connect to the OBD port and guide the user through the procedure, making it much easier than replacing the computer inside the vehicle. Jump starting the battery Most people keep a few sets of jumper cables in their trunk to use in an emergency however, jumping a battery in newer cars might not be the best choice. These vehicles are equipped with digital and computers that communicate with each other. A surge in voltage when the battery is connected to another battery could fry the components and render your car undriveable. Start the vehicle that is working and let it run for about two minutes before connecting the cables to the disabled one. Attach the red clip to the positive terminal of the battery that is good. (It will read “POS” or “+”.) Attach the other end to a clean and unpainted metal surface under the hood of the disabled vehicle. The engine block is a great choice. The black cable is not to be connected to the negative terminal of the dead battery. This could result in sparks, which would ignite the gasoline that is in the engine compartment. Once the cables are connected, start the vehicle and let it run for about five minutes. Then disconnect the cables in reverse. Be aware that the battery of the Saab 9-3 will be charged during your drive, which means it could take a while to get the battery down. It's a good idea to invest in 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 special programming 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 it, they'll be charged. The reason is that it's expensive to replace a key, and it involves replacing the CIM (Column Integration Module) or TWICE on older models, plus programming. In the event of theft, or any other disaster it is advisable to have a spare key. Even if the key is “new”, it will not function. Most locksmiths aren't able to help when you only have one working key and the dealer will charge you for the cost of replacing the computer in your car to make a replacement. We can reset and reprogram the EEEPROM of your computer to get it ready to accept a replacement key without having to replace the entire system. This can save you a significant amount of money. It's cheaper to do this than waiting until you lose the only key.