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Saab Key Programming Saab cars produced since 1994 use an immobilizer system that relies on key codes. To add an additional key, you need a new transponder, as well as special programming. This is usually done by the dealer, using a specially-designed Tech2 diagnostic tool. The issue is that it can be very expensive. It is always advisable to keep a spare set of keys on hand. Transponder key The transponder key is a piece of hardware with an electronic chip that transmits a signal to the car when it is inserted into ignition. The car will check to see whether the signal is the same as the one on the key. If the signals are in sync then the car will be able to open and start. This is a great way to prevent auto theft and keep your car secure from thieves. Transponder keys can be a popular addition to cars, but they are not as safe as traditional keys made of metal. The metal portion of a traditional key is easily cut and copied, however the transponder is protected by an electronic chip which protects it. The chip is equipped with an unique code that is embedded 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. The car can only recognize the key fob if it has an unmodified chip and programmed to match. The car will not start in the event that the key is not programmed to match. It is essential to have an extra Saab key. This is especially important especially if you reside in a rural area, where there are many car thieves. You can get a new key for your Saab by going to the dealership without paying high costs. In most instances, you can get a new key created on-the-spot at a fraction of the price of what you would pay at dealerships. Key for Wired Saab cars are usually supplied with two keys. If you own only one, you need to purchase an additional key as fast as you can. This is because if you lose it and the car needs an entirely new CIM and the locking cylinders replaced. This can be costly, especially if you are buying a second-hand car. The next step is to wire the wires for the column and row to the microcontroller. This is the most difficult part of the project and will require a great amount of soldering. There is no standardized way to accomplish this, however it is essential to determine how you will route and solder the columns and rows. There are 22 microcontroller wires as well as pins to connect for this keyboard. It has 5 rows and 17 column. After the rows and column are joined It is now time to connect the key switches. Solder a diode to each key switch pin. This will shield the pins from current, thus preventing them from being shortened. A diode can only allow the flow of current to be in one direction, and has a an indicator in black that indicates which way the current will flow. Some of the tools available at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 — may help customers in the shop, or even DIY users in some cases replace keys in the program and restore lost immobilizer data, Sanabria says. The tools connect to the OBD port and automatically guide the user through the procedure, making it much easier than replacing the computer in the vehicle. Jumpstarting the battery A majority of people keep the set in their trunks to jump start a vehicle in an emergency, but it may not be the best idea for vehicles that are newer. These cars have a variety of digital and electronic devices that communicate with one another. A voltage surge when a battery is connected to another one could cause damage to the parts making your car inoperable. Connect the cables to the vehicle that is 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 car's hood—the engine block is a good choice. The black cable is not to be connected to the negative terminal of the dead battery. The Keylab could cause a spark, which would ignite the gasoline inside the engine compartment. Once the cables are connected, start the vehicle that is disabled and let it run for approximately five minutes before you disconnect the cables in reverse order. Be aware that the battery of your Saab 9-3 is recharged when you drive, and it can take a while for the battery to go back to its original level. It is recommended to purchase another key fob as soon as you can. The replacement of the one that works requires the installation and programming of a brand new computer chip. Replacement case Many Saab owners only have one key for their car and if they lose that it's going to cost them. The reason is that it's costly to replace a key, and that involves replacing the CIM (Column Integration Module) or TWICE on older models, and programming. In the event of theft, or any other calamity it is advisable to have an extra key. Don't buy a secondhand key even when it's “new.” Keys that are claimed to be new from sellers selling aftermarket keys won't be effective and are almost guaranteed to fail in the most critical moment. Most locksmiths aren't able to help in the event that you only have one working key and the dealer will charge for the cost of replacing the computer in your vehicle to create a replacement. We can reset and reprogram the computer's EEEPROM in order for it to accept a replacement key without replacing the entire system. This could help you save a significant amount of money. It's also cheaper than waiting until you lose your one key.