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Saab Key Programming Saab cars manufactured since 1994 feature an immobilizer mechanism that is based on codes for keys. In order to add a second key, it requires a new transponder and special programming. This is usually handled by the dealer using the Tech2 diagnostic tool. This can be expensive. It is recommended to always have an extra set of keys available. Transponder key The transponder is a type of key that is equipped with an electronic chip. This chip sends out a signal when the key is inserted into the ignition. The car then checks the signal to see whether it is the same as that of the key. If the signals are identical the car will be able to unlock itself and start. This is an excellent way to safeguard your car from theft. Transponder keys are a popular feature in automobiles, however you should be aware they are not as secure as classic metal keys. While the metal portion of a traditional key may be cut and copied, a transponder is protected by an electronic chip. The chip has a unique code that is inserted into a car's computer in 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 if the device has a chip that is unmodified and has been programmed to match. Otherwise, the car will refuse to accept the key and will not start. It is crucial to have a spare Saab key. This is particularly true if you reside in a rural area with many car thieves. The good part is that you can get a replacement key for your Saab without having to go to a dealership and pay the hefty prices that they charge. In the majority of cases, you can have an original key made on the spot at a fraction of the cost of what you'd pay at a dealer. Key for Wired Saab cars are typically delivered with two keys. If you own only one, you should purchase an additional key as quickly 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 costly especially if buying a used car. The next step is connecting the wires for columns and rows to your microcontroller. This is the most laborious aspect of the project and will require a lot of soldering. There's no standard way to go about it, but you must consider how you will connect and solder each column and row. For this keyboard, there are 5 rows and 17 columns, which means there will be 22 microcontroller pins and wires to connect. After the columns and rows 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 stop them from being shorted. A diode lets current only flow in only one direction. It features a visual indicator of a black line that shows the direction in which the current will flow. Sanabria states that a number of the tools available in auto parts stores, including the Autel MaxiIM IM608PRO and IM508 can assist customers shopping or DIY customers to program replacement keys and restore the immobilizer's data. The tools plug into the OBD port and automatically guide the customer through the procedure, making it simpler than replacing the computer inside the vehicle. Jump-starting the battery The majority of people have a set of jumper cables in their trunk to use in an emergency however, jumping a battery for newer vehicles might not be the most efficient option. These cars have a variety of digital and computer systems that communicate with one another. A voltage spike when batteries are connected to another could cause damage to the components making your car unusable. Connect the cables to the vehicle that is working. Allow it to 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 clean, unpainted metal surface underneath the hood of your disabled vehicle. The engine block is a good alternative. The black cable is not to be connected to the negative terminal of the dead battery. This could cause sparks that could ignite the gasoline in the engine compartment. After the cables have been connected, you need to start the car and let it run for about five minutes. Then, disconnect the cables in reverse. Be aware that the battery in the Saab 9-3 will be charged when you drive, so it can take a while for the battery to go back to its original level. It's a good idea purchase a spare key fob as soon as you can, because replacing the sole working one requires the installation of a brand new computer module and a special program to convince it that your missing keys aren't trying to steal the car. Replacement case Many Saab owners have only one key for their car and if they lose it, it's going to cost them. It's expensive to purchase keys and will require 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 an extra key. Even if the key is “new”, it will not function. The majority of locksmiths won't be able to help if you have only one working key, and the dealer will charge for the cost of replacing the computer in your car to create a replacement. We can reset and reprogram the computer's EEEPROM to be able to accept a new key without replacing the entire system. This could save you a lot of money. replacement saab key thekeylab.co.uk to do this rather than wait until you lose the sole key.