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Saab Key Programming Saab cars that were built prior to 1994 come with an immobilizer system made up of coded keys. A new transponder is required for addition of an extra key, as well as special programming. This is usually done by the dealer using a special Tech2 diagnostic tool. This can be expensive. 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 inserted into ignition. The car then examines the signal to see whether it is the same as the one that is in the key. If the signals are in sync it will open and start. This is a great method to prevent car theft and keep your car secure from thieves. Transponder keys are a popular feature in automobiles, however you should be aware they're not as secure as traditional metal keys. The metal component of a traditional keys can be easily cut and copied, however transponders have an electronic chip that guards it. This chip contains an unique code that's programmed into a car's computers in order to identify it. The car will recognize the Saab keyfob, and allow it to be turned on. The car can only recognize the key fob if the device has an unmodified chip and programmed to match. The car won't start in the event that the key is not programmed to match. It is essential to ensure that you have a spare key for your Saab. This is especially true for those who live in a rural area, where there are many car thieves. You can get a new key for your Saab by visiting the dealership and not paying their pricey costs. You can get a replacement key created on the spot for less than half the price you'd spend at a dealership. Wired key Saab cars usually come with two keys when new. If you have only one, it is recommended to purchase an additional key fob as soon as is possible 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 expensive, especially for used cars. The next step is to wire the row and column wires to the microcontroller. This is the most difficult part of the project and will require a large deal of soldering. There isn't a standard method to go about it, however, you should consider how you will route and connect each column and row. There are 22 microcontroller wires and pins to connect to this keyboard. It has 5 rows and 17 columns. Once the rows and columns are soldered, it's the time to connect them to key switches. To do this, you need to place a diode across each pin on the key switch and then solder it. This will protect the pins from current, and prevent them from getting shorted. A diode lets current only flow in only one direction. It features a visual indicator with a black band that shows which way current will flow. Sanabria says that some of the tools that are sold in auto parts stores, such as the Autel MaxiIM IM608PRO or IM508 are able to assist customers shopping or DIY users to program replacement keys and restore immobilizer data. The tools connect to the OBD port and automatically guide the user through the process, making it more simple than replacing the computer inside the vehicle. Jump-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. They have numerous digital and electronic devices that communicate with each other. A surge in voltage while the battery is connected to another one could damage the components and render your vehicle unable to drive. Connect the cables to the vehicle operating. Allow saab 93 key fob replacement g28carkeys.co.uk to run for two minutes. Attach the red clip to the positive terminal of the good battery. (It will say “POS” or “+”.) Attach the other end to a clear, unpainted metal surface beneath the hood of your disabled vehicle. The engine block is a great choice. The black cable should not be connected to the negative terminal of the dead battery. This could result in a spark, which would ignite the gasoline inside the engine compartment. After the cables have been connected, you can start the car and allow it to run for around five minutes. Then disconnect the cables in reverse. The battery in your Saab 9-3 is recharged while you drive. It will take some time for it to return to its original state. It is a good idea to invest in a spare key fob as soon as you can, because replacing the only functioning one requires the installation of a brand new computer module and a special program to convince the system that your lost keys aren't trying to steal the car. Replacement case Many Saab owners only have one key for their vehicle and if they lose it, key, it will cost them. The reason for this is that it's not inexpensive to replace a key, and this involves replacing the CIM (Column Integration Module) or TWICE on older models, in addition to programming. In the event of theft or other catastrophe it is best to have a spare key. Don't buy a secondhand key even it's “new.” Keys that are claimed to be new from a second-hand store will not work and are likely to fail in the most critical moment. Most locksmiths cannot help you if you have only one working key and the dealer will charge you high prices to replace the computer in your vehicle to make a replacement. However, we can reset and reprogram the computer's EEPROM to accept an alternative key without replacing the whole system. That can save you lots of money. It's cheaper to do this than waiting until you lose the sole key.