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Saab Key Programming Saab cars produced since 1994 use an immobilizer system that is based on key codes. In order to add a second key, it requires an entirely new transponder and programming. This is usually done by the dealer, using a specially-designed Tech2 diagnostic tool. The problem is that it can be extremely expensive. Always keep a spare set of keys on hand. Transponder key The transponder key comes with an electronic chip that sends a signal to the car when it is inserted into the ignition. The car then checks to see whether the signal is the same as the one on the key. If the signals are in sync it will open and start. This is a great way to protect your car from theft. Transponder keys could be a popular addition to cars, but they are not as secure as traditional metal keys. The metal portion of a traditional key can be easily cut or copied, while transponders have an electronic chip that safeguards it. This chip has an unique code that is programmed into the car's computer 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 it has an unmodified chip and programmed to match. The car will not start if the key is not programmed to match. It is essential to have an extra Saab key. This is particularly important if you live in a rural location where there are many car thieves. You can get a new key for your Saab by visiting the dealership without paying expensive cost. You can get a replacement key created on the spot for less than half of what you would pay at the dealership. Key for Wired Saab cars are usually delivered with two keys. If you have only one, you should get an additional key as quickly as you can. This is because, if it's lost, the car will need a new CIM and the locking cylinders replaced. This can be expensive especially for used vehicles. The next step is connecting the wires of columns and row to your microcontroller. This is the most laborious component of the project and will require a lot of soldering. There is no standardized way to accomplish this, however it is crucial to plan the way you'll route and solder the columns and rows. There are 22 microcontroller pins and wires to connect to this keyboard. It has 5 rows and 17 column. After the columns and rows are soldered, it's the time to connect them to the key switches. To do this, put an inverter over each pin on the key switch and then solder it. This will protect the pins from current, and prevent them from being shortened. The diode allows current to only flow in one direction. It comes with a visual indicator with a black band that shows which way current will flow. Sanabria states that a number of the tools that are sold in auto parts stores, like the Autel MaxiIM IM608PRO and the IM508, can help customers who are shopping or DIY users to program replacement keys and restore immobilizer information. The tools connect to the OBD port and automatically guide the user through the process, making it easier than replacing the computer inside the vehicle. Jumpstarting the battery A lot of people keep a set in their trunk to jump-start a car in case of emergency, but this might not be the best idea for newer cars. They have numerous electronic devices and computers that communicate with one another. A surge in voltage while the battery is connected to another could cause damage to these components and render your vehicle unable to drive. Connect the cables to the vehicle that is operating. Let it 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 of the black cable to a clean, unpainted metal surface under the disabled car's hood—the engine block is a good option. Do not connect the black cable to the negative terminal on the dead battery, since it could ignite an ignition that ignites the gasoline in the engine bay. After the cables have been connected, start the car and let it run for about five minutes. Then disconnect them in reverse. Be aware that the battery in your Saab 9-3 is charged when you drive, so it could take a while to get the battery back down again. It is a good idea to buy a spare key fob as soon as you can, since 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 in the process of trying to steal the car. Replacement case Many Saab owners have only one key for their vehicle and if they lose that it's going to cost them. It's expensive to buy an additional key and it requires replacing the CIM or TWICE for older models. In saab key code www.g28carkeys.co.uk of theft, or other catastrophe it is advisable to have a spare key. Don't purchase a used key even it's “new.” Keys that are claimed-new from a second-hand store will not be effective and are almost guaranteed to fail at the crucial moment. The dealer will charge the highest dollar for only one working key. We can reset and reprogram the EEEPROM of your computer for it to accept a new key without the need to replace the entire system. This could save you a significant amount of money. It's also less expensive than waiting until you lose your only key.