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Saab Key Programming

Saab cars produced since 1994 feature an immobilizer system based on key codes. Adding an extra key requires a new transponder and special programming. This is usually done by the dealer using the Tech2 diagnostic tool.

This can be expensive. This is the reason why you should always have a spare key available.

Transponder key

The transponder is a key equipped with an electronic chip. This chip sends out a signal when the key is put in the ignition. The car then analyzes the signal to determine whether it is identical to the one in the key. If both signals match the car will then unlock itself and start. This is a great method to safeguard your car from theft.

Transponder keys are an extremely popular accessory for cars, but they are not as safe as traditional keys made of metal. The metal component of the traditional key can be easily cut and copied, whereas a transponder has an electronic chip that guards it. This chip contains an individual 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 is equipped with a chip that is unmodified and has been programmed to match. Otherwise, the car would reject the key and won't start.

It's important to make sure that you have an extra key for your Saab. This is particularly true for those who live in a rural location that has many car thieves. You can get a new key for your Saab by visiting the dealership, without having to pay their expensive cost. In most cases, you can have an original key made on the spot at a fraction of the cost you'd pay at a dealer.

Wired key

saab 900 key cars are usually delivered with two keys. If you only have one, it is an ideal idea to purchase an extra key fob as soon as possible as if you lose it the car will require a new CIM unit and the locking cylinders need to be replaced. This can be costly particularly if you are purchasing a used car.

The next step is to wire the wires for the column and row to the microcontroller. This is the most challenging part of the project and will require a large deal of soldering. There's no standard way to accomplish this, but it is essential to determine the way you'll route and solder the rows and columns. There are 22 microcontroller wires and pins that you can connect for this keyboard. It includes 5 rows and 17 columns.

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 can only allow the current to flow in a single direction, and it comes with a an indicator in black that indicates which way the current will flow.

Some of the tools you can find at auto parts stores -- such as the Autel MaxiIM IM608 Pro and IM508 -- can assist customers at the shop or DIY customers in certain cases replace keys in the program and restore lost immobilizer information, Sanabria says. The tools plug into OBD ports and guide the user through each step, making the process easier than replacing the vehicle's computer.

Jumpstarting the battery

The majority of people have a set in their trunks to jump start a vehicle in an emergency, but it might not be a good idea for newer cars. These cars have a variety of digital and electronic devices that communicate with each other. A voltage surge while a battery is hooked up to another could cause damage to these components and render your car undriveable.

Connect the cables to the vehicle that is working. Allow it to run for two minutes. Attach the red clip to the positive terminal on the good battery (it will have "POS" or "+" on it). Attach the other end of the black cable to a clean, unpainted metal surface underneath the car's hood--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 result in sparks that could ignite gasoline in the engine compartment.

Once the cables are connected, turn on the disabled vehicle and let it run for about five minutes before disconnecting the cables in reverse order. The battery in your Saab 9-3 will be recharged while you drive. It may take a while it to return to its original state. It is a good idea to invest in 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 attempting to steal the car.

Replacement case

Saab owners often only have one car key, and if it is lost, they will be charged. The reason is that it's not cheap to add a new key, and it requires replacing the CIM (Column Integration Module) or TWICE on older models, and programming. 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 you the most expensive dollar if you have only one working key. We can reset and reprogram the computer's EEEPROM in order for it to accept a new key without having to replace the entire system. This can save you a great deal of money. It's also cheaper than waiting until you lose your one key.