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Saab Key Programming Saab cars made since 1994 come with an immobilizer system that is based on codes for keys. saab keys replacement is required to allow the inclusion of an additional key, as well as special programming. This is usually done by the dealer, using a specially-designed Tech2 diagnostic tool. This can be expensive. This is the reason why you should always have a spare key available. Transponder key The transponder can be described as a key that is equipped with an electronic chip. The chip sends a signal when the key is inserted in the ignition. The car checks to see whether the signal is the same as the one on the key. If the signals are identical the car will then unlock itself and start. This is a fantastic way to protect your vehicle from theft. Transponder keys are a favored feature in vehicles, but you should be aware that they are not as secure as classic metal keys. While the metal portion of a traditional key may be cut and copied however, a transponder is secured by an electronic chip. The chip has a unique code that is programmed into a car's computers in order to identify it. The car will recognize the Saab keyfob and allow it to turn on. But, it's only able to do this if your key fob has a non-modified chip that has been programmed to match. The car won't start when the key isn't programmed to match. It is essential to ensure that you have an extra key for your Saab. This is particularly important for those who live in a rural area with many car thieves. You can obtain a replacement key for your Saab by going to the dealership without paying pricey cost. In most cases, you can have a brand new key made right on the spot at a fraction of the cost of what you'd pay at an auto dealer. Key for Wired Saab cars are usually provided with two keys. If you only have one, you should get an additional key as soon as you can. This is because if the key is lost and the car is damaged, it will require an entirely new CIM and the locking cylinders replaced. This can be costly especially if buying a used car. The next step is connecting the wires for columns and rows to your microcontroller. This is the most laborious part of the project and will require a lot of soldering. There is no standard method to accomplish this, but it is essential to determine the route you'll take and solder the rows and columns. For this keyboard, there are five rows and 17 columns. So there will be 22 microcontroller wires and pins to connect. After the rows and column are soldered together, it is time to connect the key switches. To do this, put a diode over each pin on the key switch and solder it. This will shield the pins of the key switch from current and keep them from being shorted. The diode allows current to only flow in only one direction. It comes with a visual indicator, a black band, 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 — may help customers in the shop, or even DIY customers in some cases program replacement keys and restore lost immobilizer information, Sanabria says. The tools connect to OBD ports and guide the customer through each step making the process simpler than replacing the car's computer. Jump-starting the battery Most people keep a few sets of jumper cables in their trunk for emergencies, but jumping a battery on newer vehicles might not be the best idea. These vehicles are equipped with numerous computers and digital devices which communicate with one another. A surge of voltage when batteries are connected to another battery could damage the components making your car unusable. Connect the cables to the vehicle that is working. Allow it to run for two minutes. Attach the red clip to the positive terminal on the battery that is good (it will have “POS” or “+” on it). Attach the other end to a clear, unpainted metal surface beneath the hood of your disabled vehicle. The engine block is a great alternative. Do not connect the black cable to the negative terminal on the dead battery, since this could trigger a spark that ignites the gasoline in the engine bay. Once the cables are connected, you can start the vehicle and allow it to run for around five minutes. Then disconnect them in reverse. The battery in your Saab 9-3 will recharge while you drive. It takes a while for it to recharge again. You should invest in another key fob when you can. Replacing the only one that works requires the installation and programming of a new computer chip. Replacement case Many Saab owners have only one key for their car and if they lose it, they'll be charged. It's expensive to purchase a key and requires replacing the CIM or TWICE in the case of older models. In the event of theft, or any other catastrophe it is recommended to have an extra key. Don't buy a secondhand key, even if it's “new.” Keys that are claimed-new from a second-hand store will not perform and are almost certain to fail at the crucial moment. The dealer will charge the highest dollars if you only have one working key. We can, however, reset and re-program the computer's EEPROM to accept a new key without replacing the entire system. This could help you save a significant amount of money. It's more affordable instead of waiting until you lose the only key.