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Saab Key Programming Saab cars that were built prior to 1994 come with an immobilizer system made up of coded keys. In order to add a second key, it requires a new transponder, as well as special programming. saab car key replacement G28 Car Keys is usually done by the dealer using a special Tech2 diagnostic tool. It can be costly. This is the reason why you should always have a spare key at hand. Transponder key The transponder keys are keys equipped with an electronic chip. It transmits a signal to the car when it is put into the ignition. The car is able to check whether the signal is the same as the one on the key. If the signals are in sync it will unlock and start. This is a great method to protect your car from theft. Transponder keys are a common feature in automobiles, but you should be aware that they are not as secure as traditional keys made of metal. The metal component of the traditional keys can be easily copied and cut, but a transponder has an electronic chip that safeguards it. The chip is a unique code that's programmed into a car's computers in order to identify it. The car will recognize the Saab keyfob and permit it to be turned on. However, it is only able to do this if your key fob has a non-modified chip that has been programmed to match the original. If not, the car will reject the key and not start. It is crucial to have an extra Saab key. This is especially true for those who live in a rural area, where there are numerous car thieves. You can purchase a new key for your Saab by going to the dealership, without having to pay their expensive prices. In most instances, you can get a new key made on-the-spot for less than half the price of what you'd pay at a dealer. Key for Wired Saab cars are usually supplied with two keys. If you own only one, it is recommended to get an extra key as soon as you can. This is because if it's lost the car will require an entirely new CIM and the locking cylinders replaced. This can be costly particularly if you are purchasing a used vehicle. The next step is to connect the wires of columns and row to your microcontroller. This is the most difficult aspect of the project and it will require lots of soldering. It's not a common way to do it, but you need to consider how you will route and connect each column and row. For this keyboard, there are 5 rows and 17 columns. So there will be 22 microcontroller wires and pins to connect. Once the rows and columns are soldered, it's time to connect them to key switches. Solder a diode on each key switch pin. This will shield the pins from current, preventing them from being shorted. A diode allows the flow of current to be in one direction, and has a an indicator in black that shows the direction in which current will flow. Some of the tools offered at auto parts stores — such as the Autel MaxiIM IM608 PRO and IM508 — may assist customers at the shop or DIY customers in certain cases create replacement keys and restore lost immobilizer data Sanabria says. The tools plug into OBD ports and help the customer through each step and make the process more straightforward than replacing the car's computer. Jump-starting the battery A majority of people keep a set in their trunks to start a car in case of emergency, but this might not be a good idea for vehicles that are newer. These cars have a variety of digital and electronic devices that communicate with one another. A voltage surge while the battery is connected to another battery could fry these components, rendering your vehicle undriveable. Start the vehicle you are using and let it run for about two minutes before connecting the cables to the battery that is not working. Attach the red clip on the positive terminal of the battery that's good. (It will read “POS” or “+”.) Attach the other end to a clear, unpainted metal surface underneath the hood of your disabled vehicle. The engine block is an excellent alternative. The black cable is not to be connected to the negative terminal of the dead battery. This could cause a spark, which would ignite the gasoline inside the engine compartment. After the cables have been connected, you should begin the car and let it run about five minutes. Then disconnect them in reverse. The battery in the Saab 9-3 will charge as you drive. It may take a while it to drop back down. It's a good idea to buy a spare key fob as soon as you can, because replacing the one that works requires the installation of a new computer module and special programming to convince the system that your lost keys are not trying to steal the car. Replacement Case Saab owners usually 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 for older models. In the event of theft or any other calamity it is recommended to have an extra key. Even even if the key is “new”, it won't work. The dealer will charge the highest dollar if you have only one working key. However, we can reset and re-program your computer's EEPROM in order to prepare it to accept an alternative key without replacing the entire system. This could save you a lot of money. It's less expensive rather than wait until you lose the sole key.