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Saab Key Programming Saab cars built from 1994 have an immobilizer system that is based on a set of keys. The addition of a key requires a new transponder and special programming. This is usually done by the dealer using a Tech2 diagnostic tool. The problem is that it can be very costly. This is the reason why you should always keep a spare key in your possession. Transponder key The transponder key comes equipped with an electronic chip. It transmits a signal to the car when it is put into the ignition. The car then analyzes the signal to determine whether it matches that of the key. If the signals match then the car will be able to unlock and begin. This is a great way to avoid car theft and keep your vehicle secure from thieves. Transponder keys may be an increasingly popular feature for cars, but they are not as safe as traditional keys made of metal. linked web page of a traditional key can easily be cut and copied, whereas a transponder has an electronic chip that guards it. This chip has a unique code that is programmed into the car's computer to identify it. The car will recognize the Saab keyfob and allow it to turn on. However, it will only do this if the fob has a non-modified chip that has been programmed to match it. The car won't start if the key is not programmed to match. It is essential to ensure that you have an extra key for your Saab. This is particularly important for those who live in a rural area, where there are numerous car thieves. The good part is that you can get a replacement key for your Saab without needing to visit an auto dealer and pay the high prices that they ask. In most cases, you can have an original key made on the spot for less than half the cost you'd pay at a dealer. Key for Wired Saab cars are usually supplied with two keys. If you only have one, it's an ideal idea to purchase an additional key fob as quickly as you can in case you lose it the car will require a new CIM unit, and the locking cylinders have to be replaced. This can be costly particularly if you are buying a second-hand car. The next step is to wire the wires for the column and row to the microcontroller. This is the most challenging part of the project and will require a large amount of soldering. There is no standard method to do this, but it is important to think about the routes you'll use to solder the columns and rows. There are 22 microcontroller wires as well as pins to connect for this keyboard. It has 5 rows and 17 column. After the columns and rows are soldered, it's the time to connect them to key switches. Solder a diode on each key switch pin. This will protect the pins from current, thus preventing them from being shortened. The diode allows current to only flow in one direction. It features a visual indicator with a black band that shows which way current will flow. Sanabria says that some of the tools sold in auto parts stores, including the Autel MaxiIM IM608PRO and the IM508, can help customers shopping or DIY users to program replacement keys and restore the immobilizer's data. The tools connect to OBD ports and guide the user through each step and make the process more straightforward than replacing the vehicle's computer. Jump-starting the battery Most people keep a few sets of jumper cables in their trunk to use in an emergency however, jumping a battery for newer cars might not be the most efficient option. They have numerous computers and digital devices that communicate with each other. A voltage spike when the battery is connected another can fry the components making your car inoperable. 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 good battery (it will have “POS” or “+” on it). Attach the other end to a clear, unpainted metal surface under the hood of the damaged vehicle. The engine block is an excellent option. The black cable should not be connected to the negative terminal of the dead battery. This could result in a spark, which would ignite the gasoline in the engine compartment. Once the cables are connected, you can start the disabled vehicle and allow it to run for around five minutes before you disconnect the cables in reverse order. The battery in your Saab 9-3 will be recharged while you drive. It takes a while for it to return to its original state. It's a good idea buy a spare key fob as soon as you can, since 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 typically only have one car key, and if that is lost, they'll be charged. It's expensive to buy keys and will require replacing the CIM or TWICE in the case of older models. In the event of theft, or any other calamity it is best to have a spare key. Even if the key is “new”, it will not function. Most locksmiths can't help you when you only have one working key, and the dealer will charge you top dollar to replace the computer in your vehicle to make a new replacement. We can reset and reprogram the computer's EEEPROM in order to be able to accept a replacement key without replacing 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.