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Saab Key Programming Saab cars manufactured from 1994 have an immobilizer system that relies on keys that are coded. A new transponder is required for the addition of a second key, and special programming. This is usually done by the dealer using a Tech2 diagnostic tool. The problem is that it can be extremely expensive. This is why you should always keep a spare key in your possession. Transponder key The transponder key comes with an electronic chip that sends a signal to the car when it is inserted into ignition. The car then checks to see whether the signal matches with the one on the key. If the signals are the same the car will then unlock itself and start. This is a great way to deter auto theft and keep your vehicle safe from thieves. Transponder keys can be an increasingly popular feature for cars, but they are not as safe as traditional metal keys. While the metal parts of a traditional key could be cut and copied, a transponder is protected by an electronic chip. This chip has an unique code that is programmed into the car's computers 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 has an unmodified chip that has been programmed to match. In the absence of that, the car will reject the key and not start. It is crucial to have a spare Saab key. This is particularly important when you live in a rural area, where there are a lot of car thieves. saab 9-3 key not accepted contact service g28carkeys.co.uk can obtain a replacement key for your Saab by going to the dealership and not paying their pricey costs. You can have an original key made on the spot for less than half the cost you would spend at dealerships. Wired key Saab cars typically come with two keys when they are new. If you only have one, you should get an additional key as fast as you can. This is because, if it's lost the car will require a new CIM and the locking cylinders replaced. This can be expensive especially for cars that are used. The next step is to connect the wires of columns and row to your microcontroller. This is the toughest part of the project and will require a lot of soldering. There's no standard way to go about it, but you must consider how you will route and connect each column and row. For this keyboard, there are five rows and 17 columns, which means there will be 22 microcontroller pins and wires to connect. After the columns and rows are soldered together after which it is time to connect the key switches. To do this, you need to place an inverter over each key switch pin and then solder it. This will shield the pins from current, and prevent them from being cut off. A diode only allows current to flow in one direction, and it comes with a an indicator of black color that indicates the direction in which current will flow. Sanabria says that some of the tools offered in auto parts stores, such as the Autel MaxiIM IM608PRO and the IM508 are able to assist customers who are shopping or DIY users to program replacement keys and restore immobilizer information. The tools plug into the OBD port and automatically guide the user through the procedure, making it simpler than replacing the computer in the vehicle. Jump starting the battery Most people keep a set of jumper cables in their trunks for emergencies, but jumping a battery for newer vehicles may not be the most efficient option. These vehicles are equipped with computers and digital devices which communicate with one another. A voltage surge while the battery is connected to another one could damage these components, rendering your vehicle undriveable. Connect the cables to the vehicle operating. Let it run for two minutes. Attach the red clip to the positive terminal of the good battery (it will have “POS” or “+” on it). Attach the other end of the black cable to a clean, unpainted metal surface beneath the damaged vehicle's hood. An engine block is an ideal choice. Do not connect the black cable to the negative terminal on the dead battery as it could spark a spark that ignites the gasoline in the engine bay. Once the cables are connected the vehicle that has been disabled and allow it to run for around five minutes before disconnecting them in reverse order. Be aware that the battery of your Saab 9-3 is recharged while you drive, so it can take a while to get the battery down. It's a good idea to invest in a spare key fob as soon as you can, since replacing the sole working one requires the installation of a brand new computer module and special programming to convince it that the lost keys aren't in the process of trying to steal the car. Replacement Case Saab owners typically only have one car key, and if that is lost, they'll be charged. It's expensive to buy keys and will require replacing the CIM or TWICE for older models. It's recommended to have a second key in case of theft or any other catastrophe and the best option is to purchase an additional key as quickly as you can. Even if the key is “new”, it will not function. The majority of locksmiths won't be able to help if you have only one working key and the dealer will charge top dollar to replace the computer in your vehicle to make a new replacement. However, we can reset and re-program the computer's EEPROM to prepare it to accept the new key without having to replace the whole system. This can save you a lot of money. It's cheaper to do this than waiting until you loose the only key.