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Saab Key Programming Saab cars manufactured since 1994 feature an immobilizer system that is based on key codes. The addition of a key requires an entirely new transponder and programming. This is usually done by the dealer using the Tech2 diagnostic tool. The issue is that this could be very expensive. Always keep an extra set of keys available. Transponder key The transponder is a key that has an electronic chip. This chip sends a signal when the key is inserted into the ignition. The car is able to check if the signal matches the one on the key. If the signals are in sync the car will then unlock and begin. This is a great method to avoid auto theft and keep your car safe from thieves. Transponder keys are an extremely popular accessory for cars, but they're not as secure as traditional metal keys. While the metal part of a traditional key could be cut and copied but a transponder key is protected by an electronic chip. The chip has a unique code that's programmed into a car's computer in order to identify it. When a Saab key fob is used the car recognizes it and allows it to turn on. However, it will only do this if your key fob is unmodified and has a chip that has been programmed to match it. In the absence of that, the car will reject the key and refuse to start. It's crucial to ensure that you have a spare key for your Saab. This is particularly important when you live in a rural location that has numerous car thieves. The good thing is that you can get a replacement key for your Saab without having to go to an auto dealer and pay the hefty prices that they demand. In the majority of cases, you can have a new key made on-the-spot at a fraction of the cost you would pay at an auto dealer. Key for Wired Saab cars are typically delivered with two keys. If you only have one, it's a good idea to get an extra key fob as soon as you can since if you lose it the car will require the replacement of a CIM unit, and the locking cylinders need to be replaced. This can be costly particularly if you are purchasing a used vehicle. The next step is to connect the wires for columns and rows to your microcontroller. This is the most difficult part of the project and will require a good deal of soldering. There's no standard way to accomplish this, however it's important to plan out how you will route and solder the rows and columns. For this keyboard, there are 5 rows and 17 columns, so there will be 22 microcontroller pins and wires to connect. Once the rows and columns are soldered, it's time to connect them to key switches. To do this, you need to place a diode over each key switch pin and solder it. This will protect the pins that are used for key switches from current and keep them from being shorted. A diode lets current only flow in only one direction. It has a visual indicator, a black band, that indicates the direction in which current will flow. replacement key for saab 93 g28carkeys.co.uk of the tools offered at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 — could help shop customers or even DIY customers in certain cases programme replacement keys and recover lost immobilizer information, Sanabria says. The tools plug into the OBD port and guide the user through the procedure, making it simpler than replacing the computer inside the vehicle. Jump starting the battery The majority of people have a set in their trunks to start a car in an emergency, but this might not be the best idea for newer cars. These vehicles are equipped with digital and computer systems that communicate with one another. A voltage surge when the battery is connected to another one could cause damage to the parts making your car inoperable. Start the vehicle that is working and let it run for about two minutes before connecting the cables to the one that is disabled. 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 of the black cable to a clean, unpainted metal surface underneath the disabled vehicle's hood. An engine block is a good choice. The black cable is not to be connected to the negative terminal of the dead battery. This could create sparks that could ignite the gasoline that is in the engine compartment. Once the cables are connected, turn on the vehicle you are not using and let it run for about five minutes before disconnecting them in reverse order. Be aware that the battery of the Saab 9-3 will be charged when you drive, and it could take a while for the battery to come back down again. It is recommended to purchase another key fob when you can. Replacing the one that works requires the installation and programming of a brand new computer chip. Replacement case Saab owners often only have one car key, and if it is lost, they will be charged. It's expensive to buy an additional key and it requires replacing the CIM or TWICE in the case of older models. It is best to have a second key in the event of theft or any other catastrophe and the best option is to purchase a second key as soon as you are able to. Don't purchase a used key, even when it's “new.” Keys that are claimed as new from aftermarket sellers will not be effective and are almost guaranteed to fail in the most critical moment. The dealer will charge you the most expensive dollar if you only have one working key. We can, however, reset and re-program your computer's EEPROM to accept an alternative key without replacing the entire system. This can save you lots of money. It's more affordable than wait until you lose the sole key.