Saab Key Programming
Saab cars built from 1994 have an immobilizer system that is based on coded keys. The addition of a key requires an entirely new transponder and programming. This is usually done by the dealer using a Tech2 diagnostic tool.
The problem is that it can be very costly. It is always advisable to keep an extra set of keys at hand.
Transponder key
The transponder is a piece of key equipped with an electronic chip. This chip sends a signal when the key is inserted in the ignition. The car will check to see whether the signal is the same as the one on the key. If the signals are the same it will open itself and start. saab key fob programming is a great method to protect your car from theft.
Transponder keys can be an extremely popular accessory for cars, but they are not as secure as traditional keys made of metal. While the metal portion of a conventional key can be cut and copied the transponder is protected by an electronic chip. This chip contains a unique code that is embedded into the car's computer to identify it.
The car will recognize the Saab keyfob and allow it to turn on. The car can only recognize the key fob if the device has an unmodified chip and programmed to match. The car will not start if the key is not programmed to match.
It is important to have a spare Saab key. This is especially true when you live in a rural area that is home to many car thieves. You can get a new key for your Saab by going to the dealership, without having to pay their expensive costs. In most cases, you can have a new key created on-the-spot at a fraction of the price of what you would pay at a dealer.
Key for Wired
Saab cars typically come with two keys upon purchase. If you have only one, you should get 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 expensive especially for cars that are used.
The next step is to connect the wires of columns and row to your microcontroller. This is the most challenging part of the project and will require a good amount of soldering. There is no standardized way to accomplish this, but it is important to think about how you will route and solder the columns and rows. There are 22 microcontroller wires as well as pins to connect to this keyboard. It includes 5 rows and 17 columns.
After the columns and rows are soldered, it's time to connect them to the key switches. Solder a diode on each key switch pin. This will protect the key switch pins from current and prevent them from being shorted. A diode allows current to only flow in only one direction. It comes with a visual indicator, a black band, that shows which way current will flow.
Sanabria states that a number of the tools available in auto parts stores, like the Autel MaxiIM IM608PRO or IM508, can help shoppers or DIY customers to program replacement keys and restore the immobilizer's data. The tools plug into OBD ports and guide the user through each step, making the process easier than replacing the car's computer.
Jump starting the battery
A lot of people keep a set in their trunks to jump-start their car in an emergency, but it may not be a good option for vehicles with newer technology. These cars have a variety of digital and computer systems that communicate with one another. A voltage surge when the battery is connected another can fry the components and render your vehicle unusable.
Start the vehicle that is working and allow it to run for approximately two minutes before connecting the cables to the one that is disabled. Attach the red clip to the positive terminal on the battery that is good (it will have "POS" or "+" on it). Attach the other end to a clean unpainted metal surface under the hood of the disabled vehicle. The engine block is an excellent choice. The black cable should not be connected to the negative terminal of the dead battery. This could result in sparks that could ignite the gasoline inside the engine compartment.
Once the cables are connected, you can start the vehicle that is disabled and let it run for about five minutes before disconnecting them in reverse order. The battery in your Saab 9-3 will be recharged as you drive. It takes a while for it to return to its original state. It's a good idea to invest in a spare key 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
Saab owners usually only have one car key, and if that is lost, they'll be charged. It's costly to add keys and will require replacing the CIM or TWICE for older models. It's best to have a backup key in case of theft or any other catastrophe the best solution is to buy an extra key as quickly as you can. But don't buy a used key even the case that it's "new." Claimed-new keys purchased from third-party sellers won't perform and are almost certain to fail at the critical moment.
Most locksmiths aren't able to help with a single working key, and the dealer will charge you high fees to replace the computer in your vehicle to make a replacement. However, we can reset and re-program the computer's EEPROM to accept the new key, without replacing the whole system. This could help you save a significant amount of money. It's cheaper to do this rather than wait until you lose your only key.