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Saab Key Programming Saab cars manufactured since 1994 have an immobilizer system built on coded keys. A new transponder is required to allow the addition of a second key, and special programming. This is usually done by the dealer with a specialized Tech2 diagnostic tool. The problem is that this could be quite costly. This is why it is important to always have a spare key available. Transponder key The transponder key is a key with an electronic chip that transmits a signal to the car when it is put into the ignition. The car will then check the signal to see whether it is the same as the one in the key. If the signals match then the car will be able to unlock and start. This is a great way to deter car theft and keep your vehicle secure from thieves. Transponder keys are an extremely popular accessory for cars, but they're not as secure as traditional metal keys. The metal part of the traditional keys can be easily cut or copied, while transponders have an electronic chip which protects it. The chip contains a unique code that's programmed into a car's computer order to identify it. The car will recognize the Saab keyfob and permit it to turn on. The car can only recognize the key fob when it has a chip that is unmodified and programmed to match. In the absence of that, the car will reject the key and won't start. It is important to have a spare Saab key. This is particularly true if you reside in a rural area with many car thieves. The good thing is that you can get a replacement key for your Saab without having to go to a dealer and pay the high costs they ask. In most cases, you can have a new key made on-the-spot at a fraction of the cost of what you'd pay at the dealer. Wired key Saab cars are typically delivered with two keys. If you have only one, it's recommended to purchase an additional key fob as soon as you can since if you lose it, your car will require an entirely new CIM unit, and the locking cylinders will need to be replaced. This could be expensive especially if buying a used car. The next step is to connect the row and columns wires to your microcontroller. This is the most laborious part of the project, and will require a lot of soldering. There is no standardized way to accomplish this, but it is essential to determine the route you'll take and solder the rows and columns. For this keyboard, there are 5 rows and 17 columns, so there will be 22 microcontroller pins and wires to connect. After the columns and rows are soldered, it's the time to connect them to key switches. To do saab replacement key must place a diode over each pin on the key switch and solder it. This will shield the key switch pins from current and prevent them from being shorted. A diode lets current only flow in only one direction. It has a visual indicator that is black, that indicates which direction current will flow. Sanabria states that a number of the tools sold in auto parts stores, such as the Autel MaxiIM IM608PRO and IM508, can help shoppers or DIY customers to program replacement keys and restore data from the immobilizer. The tools plug into the OBD port and automatically guide the user through the procedure, making it much easier than replacing the computer in the vehicle. Jump starting the battery The majority of people have the set in their trunk to jump start a car in an emergency, however it might not be a good idea for cars with more modern technology. These vehicles are equipped with numerous digital and computers that communicate with one another. A voltage surge when the battery is connected to another battery could damage the components making your car inoperable. Start the vehicle that is working 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 of the good battery. (It will read “POS” or “+”.) Attach the other end to a clear, unpainted metal surface underneath the hood of the disabled car. The engine block is an excellent option. The black cable is not to be connected to the negative terminal of the dead battery. This could result in sparks, which could ignite the gasoline inside the engine compartment. Once the cables are connected, begin the car and let it run about five minutes. Then, disconnect the cables in reverse. Remember that the battery on the Saab 9-3 will be charged during your drive, which means it will take a while for the battery to come back to normal. It is a good idea to purchase a spare fob as soon as you can, since replacing the sole working one requires the installation of a new computer module and special programming to convince it that the lost keys aren't in the process of trying to steal the car. Replacement Case Many Saab owners have only one key for their car and if they lose that they'll be charged. It's expensive to buy an additional key and it requires replacing the CIM or TWICE for older models. It is recommended to have a second key in case of theft or other disaster, and the best way is to purchase an additional key as quickly as you can. Even if the key is “new”, it won't work. Most locksmiths aren't able to help in the event that you only have one working key, and the dealer will charge high prices to replace the computer in your car for a replacement. We can reset and reprogram the computer's EEEPROM in order to make it ready to accept a replacement key without the need to replace the entire system. This can save you a lot of money. It's also less expensive than waiting until you lose your sole key.