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Saab Key Programming Saab cars built since 1994 feature an immobilizer system based on coded keys. A new transponder is required for the addition of an extra key, as well as special programming. This is usually done by the dealer using the Tech2 diagnostic tool. This can be expensive. This is the reason why you should always have a spare key on hand. Transponder key The transponder key is a key equipped with an electronic chip. It sends a signal to the car when it is inserted into the ignition. The car then examines the signal to see whether it matches the one in the key. If the signals match the car will then unlock and begin. This is a fantastic way to safeguard your car from theft. Transponder keys are a popular feature in automobiles, but you should be aware that they're not as secure as traditional metal keys. The metal portion of a traditional key can be easily copied and cut, but the transponder is protected by an electronic chip which protects it. The chip contains a unique code that is inserted 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 when it has an unmodified chip and has been programmed to match. Otherwise, the car would reject the key and refuse to start. It is essential to have an extra Saab key. This is particularly important for those who live in a rural location where there are a lot of car thieves. The good news is that you can find a new key for your Saab without needing to visit a dealership and pay the expensive prices that they ask. In most cases, you can have a brand new key made right on the spot at a fraction of the cost you'd pay at a dealer. Key for Wired Saab cars are usually provided with two keys. If you have only one, it is recommended to purchase an additional key fob as soon as you can since if you lose it the car will require a new CIM unit, and the locking cylinders need to be replaced. This can be costly, especially for used cars. The next step is to connect the wires for columns and row to your microcontroller. This is the most tedious aspect of the project and will require a lot of soldering. There's no standard way to do it, but you should consider how you will route and connect each column and row. There are 22 microcontroller wires and pins to connect for this keyboard. It has 5 rows and 17 columns. After the columns and rows are soldered, it's time to connect them to the key switches. Solder a diode on each key switch pin. This will shield the pins from current and prevent them from being cut off. A diode permits current to only flow in one direction. It features a visual indicator, a black band, that shows which way current will flow. Sanabria says that some of the tools that are sold in auto parts stores, such as the Autel MaxiIM IM608PRO or IM508 will assist shoppers or DIY users to program replacement keys and restore immobilizer data. The tools connect to OBD ports and guide the user through each step which makes the process much easier than replacing the vehicle's computer. Jump-starting the battery A majority of people keep an assortment of tools in their trunk to start a car in an emergency, however it might not be the best idea for newer cars. These vehicles are equipped with a number of electronic devices and computers that communicate with one another. A surge in voltage when the battery is connected to another can fry the components, rendering your car undriveable. Connect the cables to the vehicle that is operating. Allow saab key replacement to run for two minutes. Attach the red clip to the positive terminal of the good battery (it will have “POS” or “+” on it). Attach the other end of the black cable to an unpainted, clean metal surface underneath the disabled car's hood. The engine block is an ideal choice. Do not connect the black cable to the negative terminal on the dead battery because this could cause an ignition that ignites the gasoline in the engine bay. Once the cables are connected, you need to start the car and let it run for approximately five minutes. Then disconnect the cables in reverse. Remember that the battery on your Saab 9-3 is recharged during your drive, which means it could take a while for the battery to go back to its original level. You should consider purchasing an additional 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 have only one key for their car and if they lose it, the cost will be. It's expensive to add the key and also requires replacing the CIM or TWICE in the case of older models. In the event of theft or any other catastrophe it is best to have a spare key. Even even if the key is “new” it will not function. The dealer will charge you the highest dollar if you have only one working key. We can reset and reprogram the EEEPROM of your computer to be able to accept a replacement key without having to replace the entire system. This can save you a great deal of money. It's less expensive instead of waiting until you lose your only key.