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Saab Key Programming Saab cars made since 1994 feature an immobilizer mechanism that is based on codes for keys. In order to add a second key, it requires an entirely new transponder and programming. This is usually handled by the dealer using the Tech2 diagnostic tool. This can be expensive. This is why it is important to always have a spare key at hand. Transponder key The transponder can be described as a key with an electronic chip. The chip sends a signal when the key is placed into the ignition. The car is able to check whether the signal matches with the one on the key. If the signals match then the car will be able to unlock and start. This is a great way to protect your vehicle from theft. Transponder keys are an extremely popular accessory for cars, but they're not as secure as traditional keys made of metal. While the metal part of a traditional key could be cut and copied the transponder is protected by an electronic chip. The chip has 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 can only recognize the key fob if the device has a chip that is unmodified and has been programmed to match. If not, the car will reject the key and not start. It is essential to ensure that you have a spare key for your Saab. This is especially important when you live in a rural area, where there are a lot of car thieves. You can get a new key for your Saab by going to the dealership without paying high costs. In the majority of cases, you can have a brand new key made right on the spot for less than half the cost you'd pay at a dealer. Wired key Saab cars are typically delivered with two keys. If you only have one, it is recommended to get an additional key as fast as you can. This is because if you lose it, the car will need an entirely new CIM and the locking cylinders replaced. This can be expensive, especially for used cars. The next step is connecting the wires for columns and rows to your microcontroller. This is the most difficult part of the project and will require a good deal of soldering. There isn't a standard way to accomplish this, however it is important to think about the routes you'll use to solder the rows and columns. There are saab replacement key 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, you need to place a diode on each key switch pin and then solder it. This will protect the pins from current, preventing them from being shorted. A diode only allows the current to flow in a single direction, and it also has a a black band visual indicator that shows the direction in which current will flow. Some of the tools offered at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 — can help shop customers or even DIY customers in certain instances program replacement keys and restore lost immobilizer data Sanabria says. The tools connect to OBD ports and help the customer through each step and make the process more straightforward than replacing the vehicle's computer. Jumpstarting the battery Most people keep a few sets of jumper cables in their trunk for emergency situations, but jumping a battery on newer cars might not be the most efficient option. These vehicles are equipped with a number of electronic devices and computers that communicate with one another. A voltage surge when batteries are connected to another battery could damage the components, rendering your car undriveable. Connect the cables to the vehicle that is working. 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 a clean, unpainted metal surface under the disabled car's hood. The engine block would be an ideal choice. The black cable should not be connected to the negative terminal of the dead battery. This could create sparks that could ignite the gasoline inside the engine compartment. After the cables have been connected, begin the car and let it run for approximately five minutes. Then disconnect them in reverse. Remember that the battery on the Saab 9-3 gets recharged when you drive, and it can take a while for the battery to go back to its original level. It's a good idea to buy a spare key fob as soon as you can, because replacing the one that works requires the installation of a new computer module and special programming to convince it that the lost keys aren't trying to steal the car. Replacement case Saab owners often only have one car key, and if that is lost, they'll be charged. It's expensive to add an additional key and it 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. Don't buy a secondhand key, even it's “new.” Keys that are claimed to be new purchased from third-party sellers won't perform and are almost certain to fail at the critical moment. The dealer will charge you top dollar for only one working key. However, we can reset and reprogram the computer's EEPROM to prepare it to accept the new key, without replacing the whole system. This could save you lots of money. It's also cheaper than waiting until you lose your sole key.