Saab Key Programming
Saab cars produced since 1994 utilize an immobilizer system that is based on a set of keys. A new transponder is required to allow the addition of an extra key, as well as special programming. This is usually done by the dealer using the Tech2 diagnostic tool.
This can be expensive. Always keep a spare set of keys in your possession.
Transponder key
The transponder is a key with an electronic chip. This chip sends out a signal when the key is inserted in the ignition. The car checks to see whether the signal is the same as the one on the key. If the signals are the same the car will then unlock itself and start. This is a great way to safeguard your car from theft.
Transponder keys are a common feature in cars, but you should be aware that they're not as secure as traditional keys made of metal. While the metal part of a traditional key could be cut and copied however, a transponder is secured by an electronic chip. This chip contains a unique code embedded into the car's computer to identify it.
The car will recognize the Saab keyfob and permit it to turn on. However, it is only able to do this if the key fob is unmodified and has a chip that has been programmed to match. If not, the car will reject the key and refuse to start.
It is essential to ensure that you have a spare key for your Saab. This is especially true when you live in a rural area that is home to numerous car thieves. You can purchase a new key for your Saab by visiting the dealership, without having to pay their high prices. You can have an original key made on the spot at a fraction of the price you'd spend at a dealership.
Wired key
Saab cars usually come with two keys when new. If you only have one, you should purchase an extra key as soon as you can. This is because if it's lost and the car needs an entirely new CIM and the locking cylinders replaced. This can be costly especially if you're purchasing a used vehicle.
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 standard way to do it, but you need to think about how to connect and solder each column and row. There are 22 microcontroller wires and pins to connect to this keyboard. It includes 5 rows and 17 column.
After the rows and column are joined then it's time to connect the key switches. Solder a diode on each key switch pin. This will protect the key switch pins from current and also prevent them from being shorted. A diode only allows current to flow in one direction, and has a an indicator of black color that indicates the direction in which current will flow.
Sanabria says that a few of the tools offered in auto parts stores, including the Autel MaxiIM IM608PRO and 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.
Jump-starting the battery
A majority of people keep the set in their trunks to jump-start a car in case of emergency, but it might not be the best idea for newer cars. They have numerous electronic devices and computers that communicate with one another. saab key fob replacement of voltage when a battery is connected to another one could cause damage to the parts making your car unusable.
Start the vehicle that is working and let it run for about two minutes before connecting the cables to the battery that is not working. Attach the red clip to the positive terminal of 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 an excellent choice. The black cable is not to be connected to the negative terminal of the dead battery. This could create sparks that could ignite the gasoline in the engine compartment.
After the cables have been connected, you can begin the car and let it run about five minutes. Then, disconnect the cables in reverse. The battery in your Saab 9-3 is recharged as you drive. It takes a while for it to fall back. It's a good idea to buy a spare key fob as soon as you can, because replacing the one that works requires the installation of a brand new computer module and a special program to convince it that your lost keys are not trying to steal the car.
Replacement Case
Saab owners often only have one car key, and if it is lost, they will be charged. It's expensive to add an additional key and it requires replacing the CIM or TWICE for older models. It's best to have a spare key in case of theft or any other catastrophe, and the best way is to purchase an additional key as early as you can. Don't buy a secondhand key even if it's "new." Claimed-new keys from a second-hand store will not work and are likely to fail in the most critical moment.
The dealer will charge you the most expensive dollar if you have only one working key. We can, however, reset and re-program your computer's EEPROM to accept an alternative key without replacing the entire system. This can help you save a significant amount of money. It's also a lot cheaper than waiting until you lose your one key.