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Saab Key ProgrammingSaab cars manufactured since 1994 have an immobilizer feature that is based on codes for keys. Adding an extra key requires a new transponder, as well as special programming. This is usually done at the dealer, using a specially-designed Tech2 diagnostic tool.This can be expensive. It is always advisable to keep a spare set of keys available.Transponder keyThe transponder can be described as a key that is equipped with an electronic chip. The chip sends a signal when the key is inserted into the ignition. The car will check to see whether the signal is the same as the one on the key. If the signals match the car will be able to unlock itself and start. This is a great method to deter car theft and keep your car secure from thieves.Transponder keys are a popular feature in automobiles, however you must be aware that they aren't as secure as classic metal keys. The metal component of a traditional key can be easily cut and copied, however a transponder has an electronic chip that protects it. The chip has a unique code that is embedded 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. However, it is only able to do this if the key fob has a non-modified chip that has been programmed to match it. The car won't start if the key is not programmed to match.It's important to make sure that you have an extra key for your Saab. This is particularly important for those who live in a rural region where there are a lot of car thieves. The good news is that you can find a replacement key to your Saab without needing to visit a dealer and pay the high prices they ask. You can get a replacement key made on the spot for less than half what you would spend at dealerships.Key for WiredSaab cars are typically delivered with two keys. If you only have one, it's a good idea to get an extra key fob as soon as is possible, because if you lose it, your car will require an entirely new CIM unit and the locking cylinders have to be replaced. This could be expensive especially if you're buying a used car.The next step is to wire the column and row wires to the microcontroller. This is the most difficult aspect of the project and it will require lots of soldering. It's not a standard way to go about it, but you must plan how to route and solder each column and row. 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 joined then it's time to connect the key switches. To do this, you need to place a diode on each key switch pin and solder it. This will protect the pins of the key switch from current and keep them from being shorted. A diode lets current only flow in one direction. It has a visual indicator that is black, that indicates which direction current will flow.A few of the tools that are available at auto parts storeslike the Autel MaxiIM IM608 Pro and IM508 -- could help shop customers or even DIY users in some cases create replacement keys and restore lost immobilizer data, Sanabria says. The tools plug into the OBD port and automatically guide the customer through the process, making it easier than replacing the computer inside the vehicle.Jumpstarting the batteryMost people keep a few sets of jumper cables in their trunks for emergency situations however, jumping a battery on newer cars might not be the best option. These vehicles have many digital and electronic devices that communicate with each other. A voltage spike when a battery is hooked up to another could cause damage to these components and leave your vehicle unable to drive.Start saab keys thekeylab.co.uk working vehicle and allow it to run for approximately two minutes before connecting the cables to the one that is disabled. Attach the red clip on the positive terminal of the battery that is good. (It will read "POS" or "+".) Attach the other end of the black cable to an unpainted, clean metal surface under the disabled car's hood. The engine block would be an excellent choice. The black cable is not to be connected to the negative terminal of the dead battery. This could cause sparks, which would ignite gasoline in the engine compartment.Once the cables are connected, you can start the vehicle and let it run for about five minutes. Then, disconnect them in reverse. The battery in your Saab 9-3 will recharge as you drive. It takes a while for it to return to its original state. You should consider purchasing an additional key fob as soon as possible. The replacement of the one that works requires the installation and programming of a brand new computer chip.Replacement caseMany Saab owners only have one key for their vehicle and if they lose it, the cost will be. The reason is that it's costly to buy a new key, and it requires replacing the CIM (Column Integration Module) or TWICE on older models, and programming. In the event of theft, or any other catastrophe it is advisable to have an extra key. However, don't purchase a secondhand key even it's "new." Keys that are claimed-new from a second-hand store will not work and are likely to fail in the crucial moment.The dealer will charge you top dollars if you only have one working key. However, we can reset and reprogram the computer's EEPROM to prepare it to accept the new key without having to replace the entire system. This could save you a great deal of money. It's cheaper to do this instead of waiting until you loose the only key.