Saab Key Programming
Saab cars built since 1994 utilize an immobilizer system that is based on a set of keys. A new transponder is required for addition of an extra key, as well as special programming. This is usually done at the dealer, using a specially-designed Tech2 diagnostic tool.
The issue is that it can be quite costly. This is why it is important to always have a spare key at hand.
Transponder key
The transponder key is a key with an electronic chip that sends a signal to the car when it is inserted into ignition. The car will then check the signal to see if it matches the one that is in the key. If both signals match, the car will unlock itself and begin. This is a great method to protect your vehicle from theft.
Transponder keys are a popular addition to cars, but they are not as secure as traditional keys made of metal. The metal portion of a traditional key is easily cut or copied, while transponders are protected by an electronic chip which protects it. The chip is equipped with a unique code that is programmed into the car's computers to identify it.
The car will recognize the Saab keyfob and permit it to turn on. However, it can only do so if the key fob has an unmodified chip that has been programmed to match the original. In the absence of that, the car will reject the key and not start.
It's important to make sure that you have an extra key for your Saab. This is especially true if you live in a rural region where there are many car thieves. The good thing is that you can find a replacement key to your Saab without having to go to a dealer and pay the high prices that they demand. In saab 93 key fob , you can get an original key made on the spot for less than half the price of what you'd pay at dealerships.
Wired key
Saab cars usually come with two keys when new. If you have only one, it's best to acquire an additional key fob as soon as possible in case you lose it, the car will require a new CIM unit and the locking cylinders need to be replaced. This can be costly, especially if you are buying a second-hand car.
The next step is connecting the row and columns wires to your microcontroller. This is the toughest aspect of the project and it will require a lot of soldering. There isn't a standard method to go about it, but you must consider how you will connect and solder each column and row. There are 22 microcontroller wires and pins that you can connect to this keyboard. It includes 5 rows and 17 columns.
After the rows and column are soldered together, it is time to connect the key switches. Solder a diode on each key switch pin. This will protect the pins from current, preventing them from being shortened. A diode allows the current to flow in a single direction, and has a an indicator of black color that shows the direction in which current will flow.
A few of the tools that are available at auto parts stores -like the Autel MaxiIM IM608 PRO and IM508 -- may help shop customers or even DIY customers in some cases replace keys in the program and restore the lost immobilizer's data, Sanabria says. The tools plug into the OBD port and automatically guide the user through the procedure, making it simpler than replacing the computer inside the vehicle.
Jump starting the battery
Most people keep a set of jumper cables in their trunk for emergencies, but jumping a battery on modern vehicles might not be the best idea. These cars have a variety of electronic devices and computers that communicate with each other. A surge of voltage when the battery is connected to another can fry the components making your car unusable.
Start the working vehicle and allow it to run for approximately two minutes before connecting the cables to the battery that is not working. Attach the red clip on the positive terminal of the battery that's good. (It will read "POS" or "+".) Attach the other end to a clean unpainted metal surface under the hood of the disabled car. The engine block is a good choice. The black cable should not be connected to the negative terminal of the dead battery. This could cause sparks that could ignite the gasoline that is in the engine compartment.
Once the cables are connected, you can start the vehicle and let it run for approximately five minutes. Then, disconnect the cables in reverse. The battery in your Saab 9-3 will recharge while you drive. It takes a while for it to return to its original state. You should purchase a second key fob, when you can. Replacing the one that works requires the installation and programming of a brand new computer chip.
Replacement Case
Many Saab owners only have one key for their car and if they lose that the cost will be. It's expensive to purchase the key and also requires replacing the CIM or TWICE in the case of older models. In the event of theft or any other catastrophe it is advisable to have a spare key. Even even if the key is "new" it won't work.
The dealer will charge the highest dollar for only one working key. We can reset and reprogram the EEEPROM of your computer for it to accept a new key without the need to replace the entire system. This can save you a lot of money. It's also much less expensive than waiting until you lose the only key.