Saab Key Programming
Saab cars manufactured since 1994 utilize an immobilizer system that relies on keys that are coded. The addition of a key requires a new transponder and special programming. This is usually done at the dealer with a specialized Tech2 diagnostic tool.
It can be costly. It is recommended to always have a spare set of keys available.
Transponder key
The transponder is a type of key that has an electronic chip. The chip transmits a signal when the key is inserted into the ignition. The car is able to check whether the signal matches with the one on the key. If the signals match, the car will unlock and begin. This is a great method to avoid car theft and keep your car safe from thieves.
Transponder keys are a common feature in automobiles, but you must be aware that they are not as secure as traditional keys made of metal. While the metal parts of a conventional key can be cut and copied however, a transponder is secured by an electronic chip. The chip is a unique code which is programmed into the car's computer in order to identify it.
The car will recognize the Saab keyfob and permit it to be turned on. However, it can only do this if the fob is unmodified and has a chip that has been programmed to match it. Otherwise, the car will reject the key and won't start.
It's essential to ensure that you have an extra key for your Saab. This is particularly true especially if you live in a rural area with many car thieves. The good thing is that you can obtain a replacement key for your Saab without needing to visit an auto dealership and pay the expensive prices that they demand. You can have a replacement key created on the spot at a fraction of the cost you would spend at a dealership.
Key for Wired
Saab cars are usually supplied with two keys. If you only have one, it is an ideal idea to purchase an extra key fob as soon as you can since if you lose it, your car will require an entirely new CIM unit and the locking cylinders have to be replaced. This could be expensive especially if purchasing a used car.
The next step is to wire the row and column wires to the microcontroller. replacement key for saab 93 is the most difficult part of the project and will require a lot of soldering. It's not a standard way to do it, but you should think about how to connect and solder each column and row. For this keyboard, there are five rows and 17 columns. This means there will be 22 microcontroller pins and wires to connect.
After the columns and rows are joined after which it is time to connect the key switches. To do this you must place a diode on each key switch pin and then solder it. This will shield the pins from current, and prevent them from being shortened. A diode only allows current to flow in one direction, and it has a black band visual indicator that indicates the direction in which current will flow.
Sanabria states that some of the tools available in auto parts stores, like the Autel MaxiIM IM608PRO and the IM508, can help customers shopping or DIY customers to program replacement keys and restore immobilizer information. The tools connect to the OBD port and guide the user through the process, making it easier than replacing the computer inside the vehicle.
Jumpstarting the battery
Most people keep an item in their trunks to start a vehicle in the event of an emergency, but this might not be the best idea for vehicles that are newer. They have numerous computers and digital devices that communicate with one another. A voltage spike when the battery is connected to another battery could fry these components and leave your car unable to drive.
Start the vehicle you are using and let it run for about two minutes before you connect the cables to the disabled one. Attach the red clip to the positive terminal of the battery that is good. (It will say "POS" or "+".) Attach the other end to a clean unpainted metal surface under the hood of the damaged car. The engine block is a great option. The black cable should not be connected to the negative terminal of the dead battery. This could cause sparks that could ignite the gasoline that is in the engine compartment.
Once the cables are connected, turn on the disabled vehicle and let it run for about five minutes before you disconnect the cables in reverse order. Be aware that the battery of the Saab 9-3 gets recharged while you drive, so it can take a while to get the battery back down again. It's a good idea to purchase a spare 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 it that your missing keys aren't attempting to steal the car.
Replacement case
Many Saab owners have only one key for their car and if they lose that the cost will be. It's costly to add an additional key and it requires replacing the CIM or TWICE in the case of older models. In the event of theft, or any other catastrophe it is advisable to have a spare key. Don't buy a secondhand key even when it's "new." Claimed-new keys from aftermarket sellers will not work and are almost guaranteed to fail at the crucial moment.
The dealer will charge the highest dollar if you have only one working key. We can reset and reprogram the computer's EEEPROM in order to make it ready to accept a replacement key without having to replace the entire system. This can save you a lot of money. It's also a lot cheaper than waiting until you lose your one key.