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Saab Key Programming Saab cars made since 1994 utilize an immobilizer system that is based on keys that are coded. A new transponder is required for addition of an additional key, and special programming. This is usually done by the dealer using the Tech2 diagnostic tool. It can be costly. You should always keep an extra set of keys in your possession. 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 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 then unlock and begin. This is a great method to prevent auto theft and keep your car secure from thieves. Transponder keys could be an increasingly popular feature for cars, but they are not as safe as traditional metal keys. The metal portion of a traditional key can be easily cut and copied, whereas the transponder is protected by an electronic chip that guards it. The chip contains a unique code which is programmed into a car's computers in order to identify it. The car will recognize the Saab keyfob and permit it to turn on. The car will only recognize the key fob when it has a chip that is unmodified and programmed to match. Otherwise, the car will reject the key and won't start. saab key programmer to ensure that you have an extra key for your Saab. This is especially true when you live in a rural area that is home to many car thieves. The good news is that you can find a new key for your Saab without needing to visit an auto dealership and pay the high prices they ask. In most cases, you can have a new key made on-the-spot for less than half the cost of what you'd pay at an auto dealer. Wired key Saab cars usually come with two keys when they are new. If you have only one, it's best to acquire an additional key fob as soon as is possible in case you lose it the car will require a new CIM unit and the locking cylinders need to be replaced. This can be costly especially if you're purchasing a used car. The next step is to connect the column and row wires to the microcontroller. This is the most difficult part of the project and will require a great deal of soldering. There isn't a standard way to accomplish this, however it is essential to determine the routes you'll use to solder the columns and rows. For this keyboard, there are five rows and 17 columns, which means there will be 22 microcontroller wires and pins to connect. After the columns and rows are joined after which it is time to connect the key switches. Solder a diode to each key switch pin. This will protect the key switch pins from current and prevent them from being shorted. A diode allows current to only flow in one direction. It has a visual indicator that is black, that shows the direction in which the current will flow. Some of the tools you can find at auto parts storeslike the Autel MaxiIM IM608 PRO and IM508 — could help customers in the shop, or even DIY customers in some cases create replacement keys and restore lost immobilizer data Sanabria says. The tools connect to OBD ports and guide the customer through each step which makes the process much easier than replacing the car's computer. Jump-starting the battery A majority of people keep an item in their trunks to jump-start a car in an emergency, but this might not be a good idea for vehicles that are newer. These vehicles have many digital and electronic devices that communicate with one another. A voltage spike when a battery is connected to another could cause damage to the components making your car unusable. Start the vehicle you are using and let it run for about two minutes before connecting the cables to the disabled one. 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 underneath the hood of your disabled vehicle. The engine block is an excellent choice. The black cable is not to be connected to the negative terminal of the dead battery. This could create sparks, which would ignite the gasoline in the engine compartment. Once the cables are connected, start the disabled vehicle and allow it to run for around five minutes before disconnecting them in reverse order. The battery in your Saab 9-3 will be recharged as you drive. It takes a while for it to return to its original state. It's a good idea to purchase a spare key fob as soon as you can, because replacing the sole working one requires the installation of a brand new computer module and special programming to convince the system that your lost keys aren't attempting to steal the car. Replacement Case Saab owners often only have one car key, and if it is lost, they'll be charged. It's expensive to add an additional key and it requires replacing the CIM or TWICE for older models. In the event of theft, or any other catastrophe, it is best to have an extra key. Even it's “new” it will not function. The dealer will charge the highest dollar if you only have one working key. However, we can reset and re-program your computer's EEPROM to prepare it to accept the new key without having to replace the whole system. That can help you save money. It's cheaper to do this instead of waiting until you loose the only key.