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Saab Key Programming Saab cars manufactured since 1994 feature an immobilizer that relies on a set of 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 the Tech2 diagnostic tool. The problem is that it can be extremely expensive. This is why it is important to always have a spare key at hand. Transponder key The transponder keys are keys with an electronic chip that sends a signal to car when it is put into the ignition. The car checks to see whether the signal matches the one on the key. If the signals are in sync, the car will unlock and start. This is a great method to protect your vehicle from theft. Transponder keys are a popular addition to cars, but they're not as secure as traditional keys made of metal. The metal component of a traditional key is easily cut and copied, whereas a transponder has an electronic chip that safeguards it. The chip is 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 a chip that is unmodified and programmed to match. The car won't start if the key is not programmed to match. It is crucial to have a spare Saab key. This is especially true if you reside in a rural region that has numerous car thieves. You can get a new key for your Saab by visiting the dealership and not paying their expensive prices. 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 a dealer. Key for Wired Saab cars usually come with two keys upon purchase. If you only own one, it is recommended to get an additional key as soon as you can. This is because, if it's lost the car will require a new CIM and the locking cylinders replaced. This can be expensive, especially for used cars. The next step is to wire the column and row wires to the microcontroller. This is the most laborious component of the project and will require a lot of soldering. There is no standardized way to do this, but it's important to plan out the routes you'll use to solder the columns and rows. There are 22 microcontroller pins and wires to connect for this keyboard. It has five rows and 17 columns. Once the rows and columns are soldered, it's the time to connect them to key switches. To do this, put a diode across each pin of the key switch and then solder it. This will protect the pins from current, preventing them from being shortened. A diode permits current to only flow in one direction. It is equipped with a visible indicator, a black band, that indicates the direction in which current will flow. Sanabria says that some of the tools that are sold in auto parts stores, like the Autel MaxiIM IM608PRO or IM508 can assist customers who are shopping or DIY users to program replacement keys and restore immobilizer information. The tools connect to the OBD port and automatically guide the customer through the procedure, making it much easier than replacing the computer inside the vehicle. Jumpstarting the battery Most people keep an item in their trunks to start a car in an emergency, but it might not be a good option for vehicles with newer technology. These cars have a variety of electronic devices and computers that communicate with one another. A surge in voltage while the battery is connected to another could cause damage to the components and render your vehicle unable to drive. Connect saab car key replacement to the vehicle operating. Let it run for two minutes. 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 an unpainted, clean metal surface beneath the damaged car's hood. The engine block would be a good choice. Do not connect the black cable to the negative terminal on the dead battery, since it could spark a spark that ignites the gasoline in the engine bay. Once the cables are connected the vehicle that has been disabled and let it run for about five minutes before you disconnect the cables in reverse order. The battery in your Saab 9-3 will recharge while you drive. It will take a while for it to drop back down. 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 missing keys aren't attempting to steal the car. Replacement Case Many Saab owners only have one key for their car and if they lose that they'll be charged. The reason for this is that it's not cheap to buy a new key, and it involves replacing the CIM (Column Integration Module) or TWICE on older models, as well as programming. In the event of theft or any other catastrophe it is recommended to have a spare key. Even when the key is “new”, it will not function. The dealer will charge you the highest dollar for only one working key. We can, however, reset and reprogram the computer's EEPROM to prepare it to accept a new key without replacing the whole system. This can help you save a significant amount of money. It's less expensive instead of waiting until you lose the sole key.