Saab Key Programming
Saab cars made since 1994 feature an immobilizer mechanism that is based on codes for keys. Adding an extra key requires a new transponder, as well as special programming. This is usually done at the dealer with a specialized Tech2 diagnostic tool.
It can be costly. This is why it is important to always have a spare key on hand.
Transponder key
The transponder keys are keys with an electronic chip that sends a signal to the car when it is put into the ignition. The car is able to check whether the signal matches the one on the key. If the signals are the same the car will then unlock itself and start. This is a great method to prevent auto theft and keep your vehicle secure from thieves.
Transponder keys may be a popular addition to cars, but they are not as safe as traditional metal keys. While how to program saab 9-3 key fob of a traditional key could be cut and copied the transponder is protected by an electronic chip. The chip has a unique code that is programmed into a car's computer order 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 programmed to match. The car will not start if the key is not programmed to match.
It is crucial to have a spare Saab key. This is particularly important when you live in a rural location that has many car thieves. The good thing is that you can obtain a replacement key for your Saab without having to go to a dealer and pay the hefty prices they ask. You can have a replacement key made on the spot for less than half what you would spend at dealerships.
Wired key
Saab cars are usually delivered with two keys. If you only have one, you should purchase an additional key as soon as you can. This is because if the key is lost and the car needs a 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 for the column and row to the microcontroller. This is the most challenging part of the project and will require a good deal of soldering. There is no standard method to accomplish this, however it is essential to determine the route you'll take and solder the rows and columns. There are 22 microcontroller pins and wires to connect for this keyboard. It has 5 rows and 17 columns.
Once the rows and columns are soldered, it's time to connect them to key switches. To do this, put an inverter over each pin of the key switch and solder it. This will protect the pins from current, thus preventing them from being shortened. A diode lets current only flow in only one direction. It is equipped with a visible indicator that is black, that indicates which direction current will flow.
Sanabria says that a few of the tools sold in auto parts stores, such as the Autel MaxiIM IM608PRO and the IM508, can help shoppers or DIY users to program replacement keys and restore data from the immobilizer. The tools plug into the OBD port and guide the customer through the procedure, making it simpler than replacing the computer in the vehicle.
Jump-starting the battery
A majority of people keep a set in their trunks to jump start a vehicle in the event of an emergency, however it might not be the best idea for cars with more modern technology. These cars are equipped with a variety of electronic devices and computers that communicate with one another. 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 you connect the cables to the non-working one. 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 beneath the damaged car's hood. The engine block would be a good option. Do not connect the black cable to the negative terminal on the dead battery as it could ignite an ignition source that ignites gasoline in the engine bay.
After the cables have been connected, start the car and let it run about five minutes. Then disconnect the cables in reverse. Be aware that the battery in your Saab 9-3 is charged when you drive, and it could take a while to get the battery back to normal. It's a good idea to invest in a spare key fob as soon as you can, because replacing the only functioning one requires the installation of a new computer module and a special program to convince it that the lost keys aren't attempting to steal the car.
Replacement case
Saab owners usually have only one car key, and if that is lost, they will be charged. It's expensive to purchase an additional key and it requires replacing the CIM or TWICE in the case of older models. It's best to have a backup key in case of theft or any other catastrophe and the best option is to purchase a second key as early as you can. Even even if the key is "new", it will not work.
The dealer will charge you the highest dollar for only one working key. We can, however, reset and re-program the computer's EEPROM to prepare it to accept the new key, without replacing the whole system. This can save you a significant amount of money. It's much cheaper rather than wait until you lose your only key.