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Saab Key Programming Saab cars manufactured since 1994 utilize an immobilizer system based on coded keys. In order to add a second key, it requires a new transponder, as well as special programming. This is usually done by the dealer using the Tech2 diagnostic tool. The problem is that this could be extremely expensive. This is the reason why you should always have a spare key at hand. saab 9-3 key www.g28carkeys.co.uk comes equipped with an electronic chip. It sends a signal back to the car when it is put into the ignition. The car then checks to see whether the signal matches with the one on the key. If both signals match the car will be able to unlock itself and start. This is a great method to prevent auto theft and keep your vehicle safe from thieves. Transponder keys are a favored feature in cars, but you should be aware they're not as secure as traditional keys made of metal. While the metal part of a conventional key can be cut and copied however, a transponder is secured by an electronic chip. The chip contains a unique code which is programmed into a car's computer in order to identify it. The car will recognize the Saab keyfob, and allow it to be turned 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. Otherwise, the car will reject the key and refuse to start. It's important to make sure that you have a spare key for your Saab. This is particularly important especially if you live in a rural area with many car thieves. You can get a new key for your Saab by visiting the dealership without paying their high costs. You can get an original key made on the spot at a fraction of the cost you would spend at a dealership. Wired key Saab cars usually come with two keys when they're new. If you have only one, you need to purchase an extra key as soon as you can. This is because, if it's lost and the car is damaged, it will require a new CIM and the locking cylinders replaced. This can be costly particularly for used cars. The next step is to wire the wires for the column and row to the microcontroller. This is the most difficult part of the project and will require a good deal of soldering. There isn't a standard way to do this, but it's important to plan out the routes you'll use to solder the columns and rows. For this keyboard, there are 5 rows and 17 columns, so there will be 22 microcontroller pins and wires to connect. After the rows and column are joined It is now time to connect the key switches. To do this, put a diode over each pin of the key switch and then solder it. This will protect the pins from current, preventing them from being shortened. A diode permits current to only flow in one direction. It comes with a visual indicator, a black band, that shows which way current will flow. Sanabria states that a number of the tools that are sold in auto parts stores, including the Autel MaxiIM IM608PRO or IM508, can help customers who are shopping or DIY users to program replacement keys and restore immobilizer data. The tools connect to OBD ports and guide the customer through each step which makes the process much easier than replacing the vehicle's computer. Jump-starting the battery A lot of people keep an item in their trunks to jump-start their car in case of emergency, but this might not be a good idea for vehicles that are newer. These vehicles are equipped with a number of electronic devices and computers that communicate with one another. A surge in voltage when the battery is connected to another can fry the components and render your vehicle unusable. Start the vehicle that is working and allow it to run for around two minutes before you connect the cables to the non-working 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 under the hood of the affected car. The engine block is an excellent choice. Do not connect the black cable to the negative terminal of the dead battery because this could cause an ignition that ignites the gasoline in the engine bay. After the cables have been connected, you can start the car and let it run for approximately five minutes. Then, disconnect the cables in reverse. The battery in your Saab 9-3 will be recharged as you drive. It takes a while for it to fall back. You should consider purchasing another key fob as soon as you can. Replacing the 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'll be charged. It's expensive to purchase keys and will require replacing the CIM or TWICE in the case of older models. It is best to have a spare key in case of theft or other disaster, and the best way is to purchase an extra key as early as you can. Even it's “new” it will not function. The dealer will charge you the highest dollars if you only have one working key. We can, however, reset and re-program your computer's EEPROM in order to prepare it to accept a new key without replacing the whole system. This could help you save money. It's also cheaper than waiting until you lose your sole key.