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Saab Key Programming Saab cars built since about 1994 feature an immobilizer mechanism based on coded keys. A new transponder is required to allow the addition of a second key, and special programming. This is usually done at the dealer using a Tech2 diagnostic tool. The problem is that this can be very costly. You should always keep a spare set of keys on hand. Transponder key The transponder key is a piece of hardware with an electronic chip that sends a signal to the car when it is put into the ignition. The car will then check the signal to determine whether it matches that of the key. If the signals match, the car will open and start. This is a great method to deter auto theft and keep your vehicle secure from thieves. Transponder keys could be an increasingly popular feature for automobiles, but they are not as safe as traditional keys made of metal. The metal part of the traditional keys can be easily cut and copied, however a transponder has an electronic chip that guards it. The chip is equipped with a unique code programmed into the car's computer to identify it. When a Saab key fob is used the car recognizes it and allows it to turn on. However, it is only able to do this if your key fob is equipped with a chip that is not modified that has been programmed to match. The car won't start in the event that the key has not been programmed to match. It is crucial to have an extra Saab key. This is especially true for those who live in a rural area, where there are numerous car thieves. You can get a brand new key for your Saab by going to the dealership and not paying their high cost. In most cases, you can have a new key made on-the-spot at a fraction of the price of what you would pay at dealerships. Key for Wired Saab cars are usually provided with two keys. If you only own one, you should purchase an additional key as fast as you can. This is because if you lose it and the car needs a new CIM and the locking cylinders replaced. This can be expensive, especially for used cars. 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 large deal of soldering. It's not a standard way to do it, but you should determine how to route and solder each column and row. There are 22 microcontroller wires and pins to connect to this keyboard. It has 5 rows and 17 column. Once the rows and columns are soldered, it's the time to connect them to key switches. Solder a diode on each key switch pin. This will protect the pins from current and prevent them from being shortened. The diode will only allow the current to flow in a single direction, and it comes with a a black band visual indicator that shows the direction in which current will flow. A few of the tools that are available at auto parts stores- such as the Autel MaxiIM IM608 Pro and IM508 — could assist customers at the shop or DIY users in some cases create replacement keys and restore lost immobilizer data, Sanabria says. The tools connect to the OBD port and automatically guide the customer 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 on modern vehicles may not be the most efficient option. replacement key for saab 93 g28carkeys.co.uk are equipped with numerous digital and computer systems that communicate with each other. A surge in voltage while a battery is hooked up to another can fry these components and leave your vehicle unable to drive. Connect the cables to the vehicle operating. 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 of the black cable to an unpainted, clean metal surface underneath the disabled car's hood. The engine block would be an ideal choice. The black cable should not be connected to the negative terminal of the dead battery. This could create sparks, which would ignite the gasoline inside the engine compartment. Once the cables are connected, you can start the disabled vehicle and let it run for approximately five minutes before you disconnect them in reverse order. Be aware that the battery of your Saab 9-3 is charged 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 new computer module and special programming to convince the system that your lost keys aren't trying to steal the car. Replacement Case Saab owners usually have only one car key, and if it is lost, they will be charged. It's costly to add 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 best to have an extra key. Even when the key is “new”, it will not function. The dealer will charge you the highest dollar for only one working key. We can, however, reset and reprogram the computer's EEPROM in order to prepare it to accept the new key without having to replace the whole system. That can save you a significant amount of money. It's also much less expensive than waiting until you lose your only key.