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Saab Key Programming Saab cars made since 1994 use an immobilizer system that is based on key codes. The addition of a key requires a new transponder, as well as special programming. This is usually handled by the dealer using a Tech2 diagnostic tool. It can be costly. Always keep a spare set of keys at hand. Transponder key The transponder key comes equipped with an electronic chip. It sends a signal to the car when it is put into the ignition. The car will then check the signal to see whether it is identical to the one in the key. If the signals are in sync, the car will unlock and start. This is a great method to stop auto theft and keep your vehicle secure from thieves. Transponder keys may be an increasingly popular feature for cars, but they are not as safe as traditional metal keys. While the metal portion of a conventional key can be cut and copied however, a transponder is secured by an electronic chip. This chip contains an unique code that is programmed into the car's computers to identify it. The car will recognize the Saab keyfob and allow it to turn on. The car will only recognize the key fob if it is equipped with a chip that is unmodified and has been programmed to match. In the absence of that, the car will reject the key and not start. It is essential to ensure that you have a spare key for your Saab. This is particularly true for those who live in a rural area that is home to many car thieves. The good part is that you can obtain a replacement key for your Saab without needing to visit an auto dealership and pay the expensive prices that they ask. In the majority of instances, you can get an original key made on the spot for less than half the price of what you would pay at a dealer. Wired key Saab cars are usually delivered with two keys. If you have only one, it's recommended to purchase an additional key fob as soon as you can as if you lose it, your car will require a new CIM unit and the locking cylinders will have to be replaced. This can be costly especially for used vehicles. The next step is connecting the wires of columns and row to your microcontroller. This is the most difficult part of the project and will require a good amount of soldering. There is no standard method to do this, but it's important to plan out the way you'll route and solder the columns and rows. There are 22 microcontroller wires and pins to connect for this keyboard. It includes 5 rows and 17 column. Once the rows and columns are soldered, it's the time to connect them to key switches. Solder a diode on each key switch pin. This will shield the pins from current, thus preventing them from getting shorted. The diode allows current to only flow in only one direction. It has a visual indicator that is black, that shows which way current will flow. Some of the tools available at auto parts stores- such as the Autel MaxiIM IM608 PRO and IM508 — could help customers in the shop, or even DIY customers in certain instances programme replacement keys and recover lost immobilizer data, Sanabria says. The tools connect to OBD ports and help the customer through each step, making the process easier than replacing the vehicle's computer. Jump-starting the battery A lot of people keep the set in their trunk to start a car in case of emergency, but this might not be the best idea for newer cars. These vehicles have many digital and electronic devices that communicate with each other. A surge in voltage when the battery is connected another battery could damage the components, rendering your car undriveable. Start the vehicle that is working and allow it to run for approximately two minutes before connecting the cables to the battery that is not working. Attach the red clip to the positive terminal on the good battery (it will have “POS” or “+” on it). Attach the other end to a clean, unpainted metal surface under the hood of the affected car. The engine block is a good choice. Don't connect the black cable to the negative terminal on the dead battery because this could trigger an ignition source that ignites gasoline in the engine bay. After replacement saab car keys The Key Lab have been connected, you can start the vehicle and let it run for about five minutes. Then disconnect them in reverse. Keep in mind that the battery on the Saab 9-3 gets recharged when you drive, and it could take a while to get the battery down. It's a good idea purchase a spare fob as soon as you can, since replacing the only working one requires the installation of a new computer module and a special program to convince it that the lost keys are not trying to steal the car. Replacement Case Saab owners usually only have one car key, and if that is lost, they will be charged. The reason is that it's not inexpensive to buy a new key, and it requires replacing the CIM (Column Integration Module) or TWICE on older models, as well as programming. In the event of theft, or any other calamity it is advisable to have a spare key. However, don't purchase a secondhand key, even it's “new.” Keys that are claimed to be new from sellers selling aftermarket keys won't work and are almost guaranteed to fail at the critical moment. The majority of locksmiths won't be able to help when you only have one working key, and the dealer will charge you top dollar to replace the computer in your car for a replacement. We can, however, reset and reprogram the computer's EEPROM to prepare it to accept a new key without replacing the whole system. This can save you a lot of money. It's also a lot cheaper than waiting until you lose the only key.