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Saab Key Programming Saab cars built since 1994 utilize an immobilizer system based on key codes. Adding an extra key requires an entirely new transponder and programming. This is usually done by the dealer using a special Tech2 diagnostic tool. The problem is that this can be quite costly. This is why you should always keep a spare key in your possession. Transponder key The transponder key is a key equipped with an electronic chip. TheKeyLab sends a signal to the car when it is put into the ignition. The car is able to check whether the signal matches with the one on the key. If the signals match it will open itself and start. This is a great method to guard your car against theft. Transponder keys are an increasingly popular feature for cars, but they are not as safe as traditional metal keys. The metal portion of a traditional keys can be easily cut and copied, however a transponder has an electronic chip that safeguards it. This chip contains a unique code that is encoded into the car's system to identify it. The car will recognize the Saab keyfob, and allow it to be turned on. The car will only recognize the key fob if the device has an unmodified chip and has been programmed to match. The car will not start when the key isn't programmed to match. It is important to have a spare Saab key. This is particularly important when you live in a rural region where there are numerous car thieves. You can obtain a replacement key for your Saab by going to the dealership, without having to pay their pricey cost. You can have the replacement key on the spot for less than half what you would spend at an auto dealer. Wired key Saab cars usually come with two keys when they are new. If you own only one, you should purchase an additional key as fast as you can. This is because if you lose it the car will require an entirely new CIM and the locking cylinders replaced. This can be costly especially if purchasing a used vehicle. The next step is to connect the column and row wires to the microcontroller. This is the most difficult part of the project and requires a significant deal of soldering. There is no standardized way to accomplish this, but it is important to think about the way you'll route and solder the columns and rows. For this keyboard, there are five rows and 17 columns. So there will be 22 microcontroller pins and wires to connect. After the columns and rows are soldered together It is now time to connect the key switches. Solder a diode on each key switch pin. This will protect the pins from current, thus preventing them from being cut off. A diode permits current to only flow in only one direction. It features a visual indicator with a black band that shows which way current will flow. Some of the tools available at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 — may aid shop customers or DIY users in some cases create replacement keys and restore lost immobilizer information, Sanabria says. The tools plug into OBD ports and help the customer through each step, making the process easier than replacing the car's computer. Jump-starting the battery The majority of people have a set in their trunk to start a car in case of emergency, but it might not be a good idea for newer cars. These vehicles are equipped with a number of computers and digital devices that communicate with each other. A surge in voltage while the battery is connected to another could cause damage to these components and leave your vehicle undriveable. Start the vehicle you are using and allow it to run for approximately two minutes before connecting the cables to the battery that is not working. Attach the red clip to the positive terminal of the good battery (it will have “POS” or “+” on it). Attach the other end of the black cable to an unpainted, clean metal surface underneath the disabled car's hood. The engine block would be an excellent choice. The black cable should not be connected to the negative terminal of the dead battery. This could cause sparks that could ignite the gasoline in the engine compartment. Once the cables are connected the vehicle that is disabled and allow it to run for around five minutes before disconnecting them in reverse order. The battery in the Saab 9-3 will charge while you drive. It may take a while it to return to its original state. It's a good idea to buy 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 special programming 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 vehicle and if they lose it, key, it will cost them. The reason is that it's not cheap to purchase a new key, and it involves replacing the CIM (Column Integration Module) or TWICE on older models, and programming. In the event of theft, or any other calamity, it is best to have an extra key. Even if the key is “new” it will not function. Most locksmiths cannot help you when you only have one working key and the dealer will charge high prices to replace the computer in your vehicle to make a new replacement. We can reset and reprogram the computer's EEEPROM to make it ready to accept a replacement key without having to replace the entire system. This could save you a lot of money. It's more affordable rather than wait until you loose the only key.