Saab Key Programming
Saab cars manufactured since 1994 have an immobilizer system based on coded keys. The addition of a key requires a new transponder and special programming. This is usually handled by the dealer using a Tech2 diagnostic tool.
It can be costly. This is why it is important to always have a spare key available.
Transponder key
The transponder can be described as a key equipped with an electronic chip. The chip transmits a signal when the key is inserted in the ignition. The car then checks the signal to see whether it is identical to the one on the key. If the signals are the same, the car will unlock itself and begin. This is a great method to avoid auto theft and keep your vehicle secure from thieves.
Transponder keys are an extremely popular accessory for cars, but they are not as safe as traditional metal keys. While the metal part of a traditional key can be cut and copied the transponder is protected by an electronic chip. The chip is equipped with a unique code 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 it is equipped with a chip that is unmodified and has been programmed to match. Otherwise, the car will reject the key and won't start.
It's important to make sure that you have a spare key for your Saab. This is particularly true when you live in a rural area with numerous car thieves. The good news is that you can find a new key for your Saab without needing to visit a dealership and pay the hefty prices that they demand. You can have a replacement key created on the spot for less than half the price you'd spend at dealerships.
Key for Wired
Saab cars typically come with two keys when they are new. If you only have one, it is best to acquire an additional key fob as soon as you can as if you lose it the car will require an entirely new CIM unit, and the locking cylinders need to be replaced. This can be costly especially if you're purchasing a used vehicle.
The next step is to connect the row and column wires to the microcontroller. This is the most difficult part of the project, and it will require a lot of soldering. There's no standard way to go about it, but you must think about how to connect and solder each column and row. There are 22 microcontroller wires as well as pins to connect for this keyboard. It has five rows and 17 column.
After the rows and column are soldered together after which it is time to connect the key switches. Solder a diode to each key switch pin. This will protect the pins from current, preventing them from being cut off. A diode allows current to only flow in one direction. It is equipped with a visible indicator of a black line that shows the direction in which the current will flow.
Sanabria states that some of the tools available in auto parts stores, like the Autel MaxiIM IMM608PRO and IM508 are able to assist shoppers or DIY customers to program replacement keys and restore immobilizer information. The tools connect to the OBD port and guide the user through the procedure, making it much easier than replacing the computer inside the vehicle.
Jump-starting the battery
Most people keep a few sets of jumper cables in their trunk for emergencies, but jumping a battery on newer vehicles may not be the most efficient option. These cars are equipped with a variety of computers and digital devices which communicate with one another. A voltage spike when a battery is hooked up to another one could damage these components and leave your car unable to drive.
Connect the cables to the vehicle that is working. Let it run for two minutes. 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 your disabled vehicle. The engine block is a great option. The black cable should not be connected to the negative terminal of the dead battery. This could result in a spark, which would ignite the gasoline that is in the engine compartment.
Once the cables are connected the vehicle you are not using and let it run for approximately five minutes before you disconnect them in reverse order. The battery in your Saab 9-3 is recharged while you drive. It may take a while it to return to its original state. It's a good idea buy a spare key fob as soon as you can, because replacing the one that works requires the installation of a new computer module and a special program to convince it that your lost keys aren't trying to steal the car.
Replacement case
Saab owners often only have one car key, and if that is lost, they'll be charged. www.g28carkeys.co.uk to add keys and will require replacing the CIM or TWICE in the case of older models. In the event of theft, or any other catastrophe it is best to have an extra key. Even when the key is "new" it won't work.
The dealer will charge the highest dollars if you only have one working key. We can reset and reprogram the EEEPROM of your computer to be able to accept a replacement key without having to replace the entire system. That can save you lots of money. It's cheaper to do this than wait until you lose the sole key.