Saab Key Programming
Saab cars produced since 1994 use an immobilizer system that relies on coded keys. Adding an extra key requires the purchase of a new transponder as well as special programming. This is usually handled by the dealer using a Tech2 diagnostic tool.
The problem is that it can be very costly. You should always keep a spare set of keys in your possession.
Transponder key
The transponder is a piece of key that has an electronic chip. The chip transmits a signal when the key is inserted into the ignition. The car will check to see whether the signal matches with the one on the key. If the signals are identical the car will then unlock itself and start. This is a great method to avoid auto theft and keep your car secure from thieves.
Transponder keys can be a popular addition to automobiles, but they are not as secure as traditional metal keys. While the metal component of a traditional key could be cut and copied but a transponder key is protected by an electronic chip. The chip is equipped with an individual code that is encoded into the car's system to identify it.
When a Saab key fob is used the car recognizes it and allows it to turn on. However, it can only do this if the fob is unmodified and has a chip that has been programmed to match the original. Otherwise, the car will reject the key and won't start.
It's essential to ensure that you have a spare key for your Saab. This is especially important for those who live in a rural region that has many car thieves. The good thing is that you can get a replacement key for your Saab without having to go to a dealer and pay the hefty prices that they demand. In most cases, you can have a new key made on-the-spot for less than half the cost of what you would pay at dealerships.
Wired key
Saab cars typically come with two keys upon purchase. If you only have one, you should get an extra key as soon as you can. This is because if the key is lost and the car needs an entirely new CIM and the locking cylinders replaced. This can be costly particularly for used cars.
The next step is connecting the wires of columns and row to your microcontroller. This is the most tedious part of the project, and will require a lot of soldering. There isn't a standard method to do it, but you must consider how you will route and solder each column and row. For this keyboard, there are 5 rows and 17 columns. This means there will be 22 microcontroller wires and pins that you need to connect.
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 shield the pins of the key switch from current and keep them from being shorted. A diode permits current to only flow in one direction. It comes with a visual indicator that is black, that indicates which direction current will flow.
Sanabria says that a few of the tools sold in auto parts stores, such as the Autel MaxiIM IM608PRO and the IM508, can help shoppers or DIY customers to program replacement keys and restore immobilizer information. The tools plug into the OBD port and automatically guide the customer through the procedure, making it much easier than replacing the computer inside the vehicle.
Jumpstarting the battery
A lot of people keep a set of jumper cables in their trunk for emergency situations however, jumping a battery on newer vehicles may not be the best choice. These cars have a variety of computers and digital devices that communicate with each other. A surge in voltage while a battery is hooked up to another one could damage these components, rendering your car 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 to a clean unpainted metal surface underneath the hood of the damaged car. The engine block is a great alternative. The black cable is not to be connected to the negative terminal of the dead battery. This could trigger sparks, which would ignite gasoline in the engine compartment.
After the cables have been connected, you should begin the car and let it run for about five minutes. Then, disconnect the cables in reverse. Be aware that the battery in your Saab 9-3 is recharged when you drive, and it will take a while for the battery to come back down again. It's a good idea buy a spare key fob as soon as you can, because replacing the only functioning one requires the installation of a new computer module and a special program to convince it that your missing keys aren't attempting to steal the car.
Replacement Case
Saab owners typically only have one car key, and if that is lost, they will be charged. It's expensive to purchase an additional key and it requires replacing the CIM or TWICE for older models. It is best to have a backup key in the event of theft or any other catastrophe, and the best way is to purchase a second key as early as you can. However, saab replacement keys g28carkeys.co.uk purchase a secondhand key, even when it's "new." Keys that are claimed-new from sellers selling aftermarket keys won't work and are likely to fail at the crucial moment.
The majority of locksmiths won't be able to help with a single working key and the dealer will charge for the cost of replacing the computer in your vehicle for a replacement. We can, however, reset and re-program the computer's EEPROM to accept the new key without having to replace the whole system. This can help you save a significant amount of money. It's also less expensive than waiting until you lose your one key.