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Saab Key Programming Saab cars built since about 1994 have an immobilizer system made up of coded keys. The addition of a key requires a new transponder and special programming. This is usually done by the dealer with a specialized Tech2 diagnostic tool. This can be expensive. Always keep a spare set of keys available. Transponder key The transponder is a type of key equipped with an electronic chip. This chip sends a signal when the key is put in the ignition. The car then examines the signal to determine whether it is identical to the one on the key. If the signals are identical the car will be able to unlock itself and start. This is a fantastic way to guard your car against theft. Transponder keys are a favored feature in cars, but you should be aware that they're not as secure as traditional metal keys. While the metal parts 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 order to identify it. The car will recognize the Saab keyfob, and allow it to turn on. However, it is only able to do this if your key fob has a non-modified chip that has been programmed to match it. Otherwise, the car would reject the key and refuse to start. It is essential to ensure that you have a spare key for your Saab. This is especially true if you live in a rural location where there are a lot of car burglars. The good news is that it's possible to find a replacement key to your Saab without needing to visit a dealership and pay the high costs that they ask. In the majority of instances, you can get a brand new key made right on the spot for less than half the cost you would pay at dealerships. Key for Wired Saab cars usually come with two keys when new. If you only own one, you need to purchase an additional key as fast as you can. This is because if it's lost and the car is damaged, it will require an entirely new CIM and the locking cylinders replaced. lost saab key could be expensive especially if you're buying a used car. The next step is to connect the wires of the column and row to the microcontroller. This is the most challenging part of the project and requires a significant amount of soldering. There's no standard way to accomplish this, but it's important to plan out how you will route and solder the columns and rows. For this keyboard, there are five rows and 17 columns, so there will be 22 microcontroller pins and wires to connect. After the columns and rows are soldered together It is now time to connect the key switches. To do this, place an inverter over each pin of the key switch and then solder it. This will shield the pins that are used for key switches from current and also prevent them from being shorted. A diode permits current to only flow in only one direction. It comes with 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 — may aid shop customers or DIY customers in certain cases replace keys in the program and restore lost immobilizer information, Sanabria says. The tools connect to OBD ports and guide the user through each step making the process simpler than replacing the car's computer. Jump-starting the battery Most people keep the set in their trunk to jump start a vehicle in an emergency, however it might not be a good option for vehicles with newer technology. They have numerous digital and computer systems that communicate with each other. A surge in voltage when the battery is connected to another battery could fry these components and leave your vehicle unable to drive. Connect the cables to the vehicle working. Let it run for two minutes. 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 and unpainted metal surface underneath the hood of the affected car. The engine block is a good option. Do not connect the black cable to the negative terminal of the dead battery as this could cause a spark that ignites the gasoline in the engine bay. After the cables have been connected, you should start the car and let it run for approximately five minutes. Then disconnect them in reverse. The battery in your Saab 9-3 will be recharged as you drive. It will take a while for it to drop back down. You should invest in a second key fob, as soon as possible. The replacement of the one that works requires the installation and programming of a new computer chip. Replacement case Many Saab owners only have one key for their car and if they lose that key, it will cost them. It's expensive to buy the key and also requires replacing the CIM or TWICE in the case of older models. In the event of theft, or other catastrophe it is recommended to have a spare key. However, don't purchase a secondhand key, even when it's “new.” Keys that are claimed to be new from aftermarket sellers will not work and are almost guaranteed to fail in the most critical moment. Most locksmiths aren't able to help if you have only one working key, and the dealer will charge you top dollar to replace the computer in your vehicle to make a replacement. We can, however, reset and re-program the computer's EEPROM in order to prepare it to accept the new key, without replacing the entire system. This could save you a lot of money. It's more affordable than waiting until you loose the only key.