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Saab Key Programming Saab cars made since 1994 come with an immobilizer system made up of coded keys. In order to add a second key, it requires an entirely new transponder and programming. This is usually done by the dealer using a Tech2 diagnostic tool. The issue is that this can be very expensive. It is always advisable to keep a spare set of keys available. Transponder key The transponder key is a key with an electronic chip that sends a signal back to the car when it is put into the ignition. The car then examines the signal to see whether it matches the one in the key. If both signals match the car will then unlock itself and begin. This is a great way to safeguard your car from theft. Transponder keys could be a popular addition to cars, but they are not as safe as traditional keys made of metal. While the metal component of a traditional key can be cut and copied but a transponder key is protected by an electronic chip. The chip is equipped with an unique code that is encoded into the car's system to identify it. The car will recognize the Saab keyfob and allow it to turn on. However, it can only do this if the fob has a non-modified chip that has been programmed to match. saab fob key replacement TheKeyLab will not start in the event that the key is not programmed to match. It is crucial to have a spare Saab key. This is especially important when you live in a rural region that has numerous car thieves. The good part is that you can get a replacement key for your Saab without having to go to a dealer and pay the hefty prices that they demand. You can have an original key made on the spot for less than half the price you'd pay at dealerships. Wired key Saab cars are usually delivered with two keys. If you only have one, it is a good idea to get an extra key fob as soon as possible as if you lose it, your car will require a new CIM unit, and the locking cylinders need to be replaced. This can be expensive especially for cars that are used. The next step is connecting the wires for columns and row to your microcontroller. This is the most difficult part of the project, and will require lots of soldering. It's not a standard way to do it, but you must consider how you will route and solder each column and row. For this keyboard, there are five rows and 17 columns. This means there will be 22 microcontroller wires and pins that you need to connect. After the columns and rows are soldered together after which it is time to connect the key switches. To do this, you need to place a diode over each pin of the key switch and solder it. This will shield the pins from current, and prevent them from being cut off. A diode permits current to only flow in only one direction. It has a visual indicator of a black line that indicates which direction current will flow. Sanabria states that a number of the tools sold in auto parts stores, like the Autel MaxiIM IM608PRO and IM508 can assist shoppers or DIY users to program replacement keys and restore immobilizer information. The tools plug into OBD ports and help the customer through each step and make the process more straightforward than replacing the vehicle's computer. Jumpstarting the battery A lot of people keep the set in their trunk to jump-start their vehicle in an emergency, but it might not be a good idea for cars with more modern technology. These vehicles have many digital and electronic devices that communicate with one another. A voltage spike when the battery is connected to another could cause damage to the components, rendering your car undriveable. Start the 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 to the positive terminal on the good battery (it will have “POS” or “+” on it). Attach the other end of the black cable to an unpainted, clean metal surface underneath the disabled car's hood. The engine block is a good choice. Do not connect the black cable to the negative terminal on the dead battery, since it could spark an ignition spark that ignites the gasoline in the engine bay. Once the cables are connected, turn on the disabled vehicle and allow it to run for around five minutes before you disconnect the cables in reverse order. Be aware that the battery of the Saab 9-3 will be charged while you drive, so it may take some time for the battery to go back down again. It is a good idea to purchase a spare fob as soon as you can, because replacing the only functioning one requires the installation of a brand new computer module and special programming to convince it that the lost keys are not 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 for this is that it's expensive to buy a new key, and it requires replacing the CIM (Column Integration Module) or TWICE on older models, plus programming. It's recommended to have a spare key in the event of theft or other disaster and the most effective way is to buy an extra key as early as you can. Even even if the key is “new”, it will not function. The majority of locksmiths won't be able to help when you only have one working key and the dealer will charge you high fees to replace the computer in your vehicle to create a replacement. We can, however, reset and reprogram the computer's EEPROM in order to prepare it to accept a new key without replacing the whole system. This can help you save money. It's much cheaper instead of waiting until you loose the only key.