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Saab Key Programming Saab cars produced since 1994 feature an immobilizer that relies on key codes. To add an additional key, you need a new transponder and special programming. This is usually done at the dealer, using a specially-designed Tech2 diagnostic tool. This can be expensive. You should always keep an extra set of keys on hand. Transponder key The transponder is a type of key equipped with an electronic chip. This chip sends a signal when the key is put in the ignition. The car then analyzes the signal to determine if it matches the one on the key. If the signals match the car will then unlock and begin. This is a great method to protect your vehicle from theft. Transponder keys could be an increasingly popular feature for automobiles, but they are not as safe as traditional keys made of metal. The metal part of the traditional key can easily be cut or copied, while transponders are protected by an electronic chip which protects it. The chip has a unique code that is inserted into a car's computer 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 an unmodified chip and programmed to match. The car will not start in the event that the key is not programmed to match. It's important to make sure that you have a spare key for your Saab. This is especially important for those who live in a rural location where there are a lot of car thieves. You can get a brand new key for your Saab by going to the dealership and not paying their high prices. In the majority of instances, you can get a new key created on-the-spot at a fraction of the cost of what you would pay at the dealer. Wired key Saab cars usually come with two keys when they're new. If you only have one, it's a good idea to get an extra key fob as soon as possible, because if you lose it, the car will require the replacement of a CIM unit, and the locking cylinders will have to be replaced. This can be expensive, especially for used cars. The next step is to connect the wires for columns and row to your microcontroller. This is the most difficult part of the project and will require a great deal of soldering. There's no standard way to go about it, but you should consider how you will route and solder each column and row. For this keyboard, there are 5 rows and 17 columns, which means there will be 22 microcontroller wires and pins 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 from current, preventing them from being cut off. A diode lets current only flow in one direction. It features a visual indicator of a black line that indicates which direction current will flow. Some of the tools offered at auto parts storeslike the Autel MaxiIM IM608 Pro and IM508 — could help customers in the shop, or even DIY users in some cases programme replacement keys and recover the lost immobilizer's data, Sanabria says. The tools plug into the OBD port and guide the user through the procedure, making it simpler than replacing the computer inside the vehicle. Jump starting the battery Most people keep a set in their trunk to jump start a vehicle in an emergency, but it might not be a good idea for cars with more modern technology. These vehicles are equipped with many digital and computer systems that communicate with each other. A voltage spike when a battery is hooked up to another can fry these components and render your vehicle undriveable. Start the vehicle that is working and let it run for about two minutes before connecting the cables to the battery that is not working. Attach the red clip to the positive terminal of the battery that is good. (It will read “POS” or “+”.) Attach the other end to a clean and unpainted metal surface under the hood of the disabled car. The engine block is a great choice. Do not connect the black cable to the negative terminal of the dead battery, as this could trigger an ignition that ignites the gasoline in the engine bay. Once the cables are connected, start the disabled vehicle and let it run for about five minutes before disconnecting them in reverse order. The battery in the Saab 9-3 will charge as you drive. saab spare key may take a while it to return to its original state. It's a good idea to purchase a spare key fob as soon as you can, because replacing the one that works requires the installation of a brand new computer module and a special program to convince it that your missing keys aren't in the process of trying to steal the car. Replacement Case Saab owners typically only have one car key, and if it is lost, they'll be charged. It's costly to add the key and also requires 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 a spare key. Don't purchase a used key even the case that it's “new.” Keys that are claimed to be new purchased from third-party sellers won't work and are almost guaranteed to fail in the crucial moment. The dealer will charge you the highest dollar if you only have one working key. We can, however, reset and reprogram the computer's EEPROM to prepare it to accept the new key without having to replace the entire system. This can save you a lot of money. It's also much less expensive than waiting until you lose your one key.