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Saab Key Programming Saab cars manufactured from 1994 have an immobilizer that relies on key codes. To add an additional key, you need a new transponder and special programming. This is usually done by the dealer using a Tech2 diagnostic tool. The issue is that it can be very expensive. This is why you should always keep a spare key in your possession. Transponder key The transponder key comes equipped with an electronic chip. It sends a signal back to the car when it is put into the ignition. The car then checks the signal to see whether it is identical to the one in the key. If the signals match it will unlock and start. This is an excellent way to safeguard your car from theft. Transponder keys can be an increasingly popular feature for automobiles, but they are not as safe as traditional metal keys. While the metal parts of a conventional key can be cut and copied but a transponder key is protected by an electronic chip. The chip has a unique code 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. However, it can only do so if the key fob is unmodified and has a chip that has been programmed to match it. In the absence of that, the car will reject the key and not start. It's important to make sure that you have an extra key for your Saab. This is particularly important when you live in a rural area that is home to numerous car thieves. The good news is that you can find a replacement key to your Saab without needing to visit an auto dealer and pay the high prices that they demand. saab spare key can get the replacement key on the spot for less than half of the cost you would spend at the dealership. Key for Wired Saab cars are usually provided with two keys. If you have only one, it is 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 need to be replaced. This could be expensive particularly if you are buying a used car. The next step is to wire the wires of the column and row to the microcontroller. This is the most difficult part of the project and will require a lot of soldering. It's not a common way to go about it, however, you should plan how to route and connect each column and row. For this keyboard, there are 5 rows and 17 columns. So there will be 22 microcontroller pins and wires to connect. Once the rows and columns are soldered, it's the time to connect them to the key switches. Solder a diode on each key switch pin. This will protect the pins from current, preventing them from being shortened. A diode allows current to only flow in only one direction. It is equipped with a visible indicator of a black line that shows which way current will flow. Some of the tools available at auto parts stores — such as the Autel MaxiIM IM608 PRO and IM508 — could help customers in the shop, 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 customer through each step, making the process easier than replacing the vehicle's computer. Jump starting the battery A majority of people keep an item in their trunks to jump start a car in an emergency, but it might not be the best idea for cars with more modern technology. These vehicles are equipped with numerous computers and digital devices which communicate with each other. A voltage spike when a battery is hooked up to another could cause damage to these components and render your car undriveable. Start the vehicle you are using and allow it to run for approximately two minutes before you connect the cables to the disabled one. Attach the red clip on the positive terminal of the battery that's good. (It will say “POS” or “+”.) Attach the other end of the black cable to a clean, unpainted metal surface under the disabled car's hood. The engine block is a good option. The black cable is not to be connected to the negative terminal of the dead battery. This could trigger sparks, which would ignite the gasoline that is in the engine compartment. Once the cables are connected, turn on 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 while you drive. It will take some time for it to drop back down. It is recommended to purchase an additional key fob when you can. Replacing the original one that works requires the installation and programming of a new computer chip. Replacement Case Saab owners typically only have one car key, and if that is lost, they will be charged. The reason for this is that it's expensive to add a new key, and that involves replacing the CIM (Column Integration Module) or TWICE on older models, as well as programming. In the event of theft or any other catastrophe, it is best to have an extra 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 aren't able to help when you only have one working key and the dealer will charge for the cost of replacing the computer in your car to make a new replacement. However, we can reset and re-program your computer's EEPROM in order to prepare it to accept the new key without having to replace the whole system. This could help you save a significant amount of money. It's also cheaper than waiting until you lose your sole key.