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Saab Key Programming Saab cars built since 1994 utilize an immobilizer that relies on key codes. A new transponder is required in order to enable the addition of an extra key, and special programming. This is usually handled by the dealer using the Tech2 diagnostic tool. It can be costly. This is why you should always have a spare key at hand. Transponder key The transponder key comes equipped with an electronic chip. It transmits a signal to the car when it is inserted into the ignition. The car will check to see whether the signal matches with the one on the key. If the signals are the same, the car will unlock itself and start. This is a great way to stop car theft and keep your car safe from thieves. Transponder keys could be an extremely popular accessory for cars, but they're not as secure as traditional metal keys. While the metal parts of a traditional key may be cut and copied, a transponder is protected by an electronic chip. The chip is a unique code that is inserted into a car's computer order to identify it. When a Saab key fob is used the car recognizes it and allows it to turn on. The car can only recognize the key fob when it has a chip that is unmodified and has been programmed to match. Otherwise, the car will reject the key and not start. It is important to have an extra Saab key. This is particularly important especially if you reside in a rural region where there are a lot of car thieves. You can purchase a new key for your Saab by visiting the dealership without paying high prices. In the majority of cases, you can have a brand new key made right on the spot for less than half the price of what you would pay at a dealer. Key for Wired Saab cars are usually delivered with two keys. If you have only one, it's a good idea to get an additional key fob as soon as you can, because if you lose it, your car will require an entirely new CIM unit, and the locking cylinders will have to be replaced. This could be expensive particularly if you are buying a second-hand car. The next step is to connect the wires of columns and row to your microcontroller. This is the most difficult component of the project and will require a lot of soldering. There isn't a standard method to go about it, however, you should determine how to connect and solder each column and row. For this keyboard, there are 5 rows and 17 columns. So there will be 22 microcontroller wires and pins to connect. After the columns and rows are soldered, it's the time to connect them to the key switches. To do this, you need to place a diode over each pin on the key switch and solder it. This will protect the pins from current and prevent them from being cut off. A diode allows current to only flow in only one direction. It comes with a visual indicator with a black band that indicates the direction in which current will flow. Some of the tools you can find at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 — can aid shop customers or DIY users in some cases create replacement keys and restore lost immobilizer information, Sanabria says. The tools plug into OBD ports and guide the user through each step making the process simpler than replacing the car's computer. saab key fob repair The Keylab -starting the battery A lot of people keep a set of jumper cables in their trunks in case of emergency, but jumping a battery in newer automobiles might not be the best option. These vehicles are equipped with a number of computers and digital devices that communicate with each other. A voltage surge when the battery is connected to another one could cause damage to the parts and render your vehicle unusable. Start the vehicle you are using and allow it to run for around two minutes before connecting the cables to the one that is disabled. Attach the red clip on the positive terminal of the good battery. (It will say “POS” or “+”.) Attach the other end of the black cable to an unpainted, clean metal surface under the disabled car's hood. 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 cause sparks, which would ignite the gasoline that is in the engine compartment. Once the cables are connected, you can start the vehicle that has been disabled and allow it to run for around five minutes before disconnecting the cables in reverse order. Keep in mind that the battery on the Saab 9-3 gets recharged during your drive, which means it will take a while for the battery to come back down again. It is recommended to purchase a second key fob, as soon as you can. Replacing the only one that works requires the installation and programming of a brand new computer chip. Replacement Case Saab owners usually have only one car key, and if that is lost, they will be charged. It's expensive to purchase a key and requires replacing the CIM or TWICE for older models. It is best to have a second key in case of theft or other disaster, and the best way is to buy an extra key as early as you can. However, don't purchase a secondhand key, even the case that it's “new.” Keys that are claimed-new purchased from third-party sellers won't be effective and are almost guaranteed to fail at the critical moment. The dealer will charge you the highest dollar for only one working key. However, we can reset and re-program your computer's EEPROM to prepare it to accept a new key without replacing the entire system. That can save you a significant amount of money. It's much cheaper rather than wait until you lose your only key.