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Saab Key Programming Saab cars manufactured since 1994 use an immobilizer system that is based on coded keys. The addition of a key requires a new transponder, as well as special programming. This is usually done at the dealer, using a specially-designed Tech2 diagnostic tool. The issue is that this could be extremely expensive. It is always advisable to keep an extra set of keys at hand. Transponder key The transponder key comes with an electronic chip that sends a signal to the car when it is placed in the ignition. The car checks to see if the signal matches the one on the key. If the signals match then the car will be able to unlock and begin. This is a great way to stop auto theft and keep your vehicle secure from thieves. Transponder keys may be an increasingly popular feature for cars, but they are not as secure as traditional keys made of metal. The metal portion of a traditional key can easily be cut and copied, however a transponder has an electronic chip that protects it. This chip contains a unique code that is encoded into the car's system 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 it has an unmodified chip and programmed to match. In the absence of that, the car will reject the key and not start. It is vital to have a spare Saab key. This is particularly important if you reside in a rural region that has many car thieves. The good news is that it's possible to obtain a replacement key for your Saab without needing to visit a dealer and pay the high costs that they ask. In most cases, you can have a brand new key made right on the spot for less than half the cost of what you'd pay at a dealer. Wired key Saab cars are typically delivered with two keys. If you have only one, you should purchase an additional key as quickly as you can. This is because if it's lost, the car will need a 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 row to your microcontroller. This is the toughest part of the project and it will require a lot of soldering. There's no standard way to do this, but it is essential to determine the way you'll route and solder the columns and rows. There are 22 microcontroller wires as well as pins 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. Solder a diode to each key switch pin. This will protect the pins on the key switch from current and keep them from being shorted. The diode will only allow current to flow in one direction, and it comes with a the black band as a visual indicator that indicates which way the current will flow. G28 Car Keys of the tools you can find at auto parts storeslike the Autel MaxiIM IM608 Pro and IM508 -- could help shop customers or even DIY users in some cases create replacement keys and restore lost immobilizer data, Sanabria says. 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. Jumpstarting the battery The majority of people have a set of jumper cables in their trunks for emergency situations, but jumping a battery on newer vehicles may not be the best idea. They have numerous electronic devices and computers that communicate with one another. A voltage spike when the battery is connected to another can fry the components and render your vehicle unusable. Connect the cables to the vehicle working. Allow it to run for two minutes. Attach the red clip to the positive terminal of the battery that is good (it will have "POS" or "+" on it). Attach the other end to a clear, unpainted metal surface under the hood of the disabled car. The engine block is a great alternative. Don't connect the black cable to the negative terminal on the dead battery, as it could spark an ignition that ignites the gasoline in the engine bay. Once the cables are connected the disabled vehicle and let it run for approximately five minutes before you disconnect the cables in reverse order. The battery in your Saab 9-3 will recharge as you drive. It takes a while for it to recharge again. It's a good idea invest in a spare key fob as soon as you can, because replacing the only functioning one 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 it is lost, they'll be charged. The reason for this is that it's expensive to purchase a new 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 best to have a spare key. However, don't purchase a secondhand key, even the case that it's "new." Keys that are claimed-new purchased from third-party sellers won't work and are almost guaranteed to fail in the crucial moment. Most locksmiths can't help you if you have only one working key and the dealer will charge you top dollar to replace the computer in your car to make a new replacement. We can reset and reprogram the computer's EEEPROM to be able to accept a replacement key without replacing the entire system. This could help you save a significant amount of money. It's much cheaper instead of waiting until you loose the only key.

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