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Saab Key Programming Saab cars built since about 1994 feature an immobilizer mechanism built on coded keys. In order to add a second key, it requires the purchase of a new transponder as well as special programming. This is usually handled by the dealer using a Tech2 diagnostic tool. This can be expensive. This is why it is important to always keep a spare key in your possession. Transponder key The transponder key is a key with an electronic chip that sends a signal back to the car when it is placed in the ignition. The car then checks to see whether the signal matches with the one on the key. If the signals are the same it will open itself and begin. This is a great way to deter car theft and keep your car safe from thieves. Transponder keys could be an increasingly popular feature for cars, but they're not as secure as traditional keys made of metal. The metal part of the traditional key can easily be cut and copied, whereas transponders have an electronic chip which protects it. This chip has an unique code that is embedded into the car's computer to identify it. The car will recognize the Saab keyfob and allow it to be turned on. The car can only recognize the key fob if it has a chip that is unmodified and programmed to match. The car will not start in the event that the key has not been programmed to match. It is important to have a spare Saab key. This is especially important if you reside in a rural area that is home to numerous car thieves. The good thing is that you can get a replacement key for your Saab without needing to visit a dealership and pay the high costs that they demand. In the majority of cases, you can have a brand new key made right on the spot for less than half the price of what you would pay at dealerships. Wired key Saab cars usually come with two keys when new. If you only have one, you should get an additional key as soon as you can. This is because if the key is lost, the car will need a new CIM and the locking cylinders replaced. This can be costly particularly for used cars. The next step is to wire the row and column wires to the microcontroller. This is the most challenging part of the project and will require a great amount of soldering. There isn't a standard method to go about it, but you must plan how to route and solder each column and row. There are 22 microcontroller pins and wires to connect for this keyboard. It has five rows and 17 columns. After the columns and rows are soldered, it's the time to connect them to the key switches. Solder a diode to each key switch pin. This will shield the pins of the key switch from current and also prevent them from being shorted. A diode allows current to flow in one direction, and it has the black band as a visual indicator that indicates which way the current will flow. A few of the tools that are available at auto parts stores- such as the Autel MaxiIM IM608 PRO and IM508 — can aid shop customers or DIY customers in certain instances replace keys in the program and restore lost immobilizer data, Sanabria says. The tools plug into the OBD port and automatically guide the user through the procedure, making it much easier than replacing the computer in the vehicle. Jump starting the battery Most people keep an item in their trunk to jump-start a vehicle in the event of an emergency, but it may not be the best idea for newer cars. These vehicles are equipped with many computers and digital devices which communicate with each other. A surge in voltage while the battery is connected to another one could damage these components and render your car undriveable. Connect the cables to the vehicle that is 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 to a clean, unpainted metal surface underneath the hood of the disabled car. saab car keys is a good option. The black cable should not be connected to the negative terminal of the dead battery. This could trigger sparks, which would ignite gasoline in the engine compartment. Once the cables are connected the disabled vehicle and let it run for about five minutes before you disconnect them in reverse order. The battery in the Saab 9-3 will charge as you drive. It will take a while for it to recharge again. It's a good idea purchase a spare fob as soon as you can, since replacing the sole working one requires the installation of a brand new computer module and special programming to convince it that your missing keys aren't in the process of trying to steal the car. Replacement Case Saab owners usually have only one car key, and if that is lost, they'll be charged. The reason is that it's not cheap to replace a key, and that 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. However, don't purchase a secondhand key even the case that it's “new.” Claimed-new keys from sellers selling aftermarket keys won't be effective and are almost guaranteed to fail at the crucial moment. The dealer will charge the highest dollar for only one working key. We can, however, reset and reprogram the computer's EEPROM in order to prepare it to accept the new key without having to replace the entire system. This could save you a significant amount of money. It's also less expensive than waiting until you lose your one key.