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Saab Key Programming Saab cars built since about 1994 have an immobilizer system that is based on codes for keys. A new transponder is required for the addition of a second key, as well as special programming. This is usually done by the dealer using the Tech2 diagnostic tool. It can be costly. It is always advisable to keep an extra set of keys at hand. Transponder key The transponder key comes with an electronic chip that sends a signal to the car when it is placed in the ignition. The car will then check the signal to see whether it matches the one in the key. If the signals are identical the car will then unlock itself and begin. This is an excellent way to protect your vehicle from theft. Transponder keys could be an extremely popular accessory for automobiles, but they are not as secure as traditional metal keys. The metal portion of a traditional key is easily copied and cut, but transponders have an electronic chip which protects it. This chip contains a unique code embedded into the car's computer to identify it. The car will recognize the Saab keyfob, and allow it to turn on. However, it will only do this if the fob is unmodified and has a chip that has been programmed to match. If not, the car will reject the key and won't start. It is essential to have an extra Saab key. This is especially important for those who live in a rural area that is home to numerous car thieves. The good news is that it's possible to obtain a replacement key for your Saab without having to go to an auto dealer and pay the expensive prices that they demand. In most cases, you can have an original key made on the spot at a fraction of the cost of what you would pay at the dealer. Wired key Saab cars are usually delivered with two keys. If you only have one, it's best to acquire an additional key fob as quickly as you can in case you lose it, your car will require a new 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 of the column and row to the microcontroller. This is the most difficult part of the project and will require a good deal of soldering. It's not a standard way to go about it, however, you should consider how you will route and solder each column and row. For this keyboard, there are five 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 the key switches. Solder a diode to each key switch pin. This will protect the pins from current, preventing them from getting shorted. A diode only allows the current to flow in a single direction, and it has an indicator of black color that indicates the direction current will flow. A few of the tools that are available at auto parts storeslike the Autel MaxiIM IM608 Pro and IM508 — may assist customers at the shop or DIY customers in certain cases programme replacement keys and recover the lost immobilizer's data, Sanabria says. The tools connect to the OBD port and guide the customer through the procedure, making it simpler than replacing the computer inside the vehicle. saab keys www.thekeylab.co.uk starting the battery A lot of people keep a set of jumper cables in their trunks to use in an emergency however, jumping a battery for newer vehicles might not be the most efficient option. They have numerous computers and digital devices that communicate with one another. A voltage surge while the battery is connected to another one could damage the components and render your car unable to drive. Connect the cables to the vehicle working. Let it run for two minutes. Attach the red clip on the positive terminal of the good battery. (It will read “POS” or “+”.) Attach the other end of the black cable to a clean, unpainted metal surface underneath the disabled car's hood—the engine block is a good option. The black cable should not be connected to the negative terminal of the dead battery. This could trigger a spark, which would ignite the gasoline that is in the engine compartment. Once the cables are connected, you should start the vehicle and let it run about five minutes. Then, disconnect them in reverse. Be aware that the battery in your Saab 9-3 is recharged when you drive, so it will take a while for the battery to go down. It's a good idea purchase a spare fob as soon as you can, because replacing the only functioning one requires the installation of a new computer module and a special program to convince it that your lost keys aren't in the process of trying to steal the car. Replacement case Saab owners typically only have one car key, and if that is lost, they'll be charged. The reason is that it's not cheap to purchase 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 other catastrophe it is best to have a spare key. Even when the key is “new”, it will not function. Most locksmiths aren't able to help when you only have one working key, and the dealer will charge high prices to replace the computer in your vehicle to make a new replacement. However, we can reset and reprogram the computer's EEPROM to accept an alternative key without replacing the whole system. This can save you a great deal of money. It's much cheaper than wait until you lose your only key.