Saab Key Programming
Saab cars made from 1994 have an immobilizer system that is based on keys that are coded. The addition of a key requires a new transponder and special programming. This is usually handled by the dealer using a Tech2 diagnostic tool.
The issue is that it can be very expensive. This is why you should always have a spare key on hand.
Transponder key
The transponder can be described as a key with an electronic chip. The chip transmits a signal when the key is put in the ignition. The car is able to check whether the signal is the same as the one on the key. If the signals are in sync it will unlock and start. This is an excellent way to safeguard your car from theft.
Transponder keys are a common feature in automobiles, but it is important to know that they aren't as secure as classic keys made of metal. The metal portion of a traditional keys can be easily cut and copied, however transponders are protected by an electronic chip that guards it. This chip has a unique code that is encoded into the car's system to identify it.
The car will recognize the Saab keyfob and allow it to be turned on. The car will only recognize the key fob if it has an unmodified chip and has been programmed to match. The car won't start in the event that the key is not programmed to match.
It's important to make sure that you have a spare key for your Saab. This is especially true when you live in a rural area that is home to many car thieves. The good news is that it's possible to find a new key for your Saab without needing to visit a dealer and pay the high prices they ask. You can have a replacement key made on the spot for less than half of the cost you would spend at a dealership.
Wired key
Saab cars are usually provided with two keys. If you only have one, it is best to acquire an extra key fob as soon as is possible as if you lose it the car will require the replacement of a CIM unit and the locking cylinders will need to be replaced. This can be expensive especially for cars that are used.
The next step is to connect the wires of the column and row to the microcontroller. This is the most difficult part of the project and will require a good amount of soldering. It's not a common way to do it, but you need to think about how to route and solder each column and row. There are 22 microcontroller pins and wires to connect for this keyboard. It has 5 rows and 17 column.
Once the rows and columns are soldered, it's time to connect them to the key switches. Solder a diode on each key switch pin. This will shield the pins of the key switch from current and also prevent them from being shorted. A diode allows the current to flow in a single direction, and has a the black band as a visual indicator that indicates the direction in which current will flow.
Sanabria states that a number of the tools sold in auto parts stores, like the Autel MaxiIM IM608PRO and the IM508 can assist shoppers or DIY users to program replacement keys and restore immobilizer data. The tools plug into the OBD port and automatically guide the user through the process, making it easier than replacing the computer inside the vehicle.
Jumpstarting the battery
A lot of people keep a set in their trunks to jump start a car in case of emergency, but it might not be the best option for vehicles with newer technology. They have numerous digital and computer systems that communicate with each other. replacement saab key in voltage while the battery is connected to another can fry these components and leave your vehicle unable to drive.
Start the vehicle you are using and allow it to run for around two minutes before connecting the cables to the non-working one. 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 and unpainted metal surface underneath the hood of the affected vehicle. The engine block is a good option. The black cable is not to be connected to the negative terminal of the dead battery. This could trigger sparks, which would ignite the gasoline that is in the engine compartment.
Once the cables are connected, turn on the vehicle you are not using and let it run for approximately five minutes before disconnecting the cables in reverse order. Remember that the battery on the Saab 9-3 will be charged during your drive, which means it could take a while to get the battery down. It's a good idea to purchase a spare fob as soon as you can, since replacing the one that works requires the installation of a brand new computer module and special programming to convince it that the lost keys aren't attempting to steal the car.
Replacement case
Many Saab owners have only one key for their vehicle and if they lose that they'll be charged. The reason for this is that it's costly to buy a new key, and this involves replacing the CIM (Column Integration Module) or TWICE on older models, in addition to programming. It is best to have a backup key in the event of theft or other disaster, and the best way is to buy an extra key as quickly as you can. Even it's "new" it will not work.
Most locksmiths cannot help you in the event that you only have one working key, and the dealer will charge you high prices to replace the computer in your car for a replacement. We can reset and reprogram the computer's EEEPROM to be able to accept a new key without replacing the entire system. This can help you save money. It's less expensive instead of waiting until you lose your only key.