Saab Key Programming
Saab cars that were built prior to 1994 feature an immobilizer mechanism built on coded keys. In order to add a second key, it requires the purchase of a new transponder as well as special programming. This is usually done by the dealer using a Tech2 diagnostic tool.
It can be costly. This is the reason why you should always have a spare key on hand.
Transponder key
The transponder key comes with an electronic chip that sends a signal to the car when it is inserted into ignition. The car is able to check whether the signal is the same as the one on the key. If the signals match then the car will be able to open and start. saab 9-3 replacement key is a fantastic way to guard your car against theft.
Transponder keys can be a popular addition to cars, but they are not as safe as traditional metal keys. While the metal component of a traditional key may be cut and copied however, a transponder is secured by an electronic chip. The chip is a unique code which is programmed into a car's computers in order to identify it.
When a Saab key fob is used the car recognizes it and allows it to turn on. However, it will only do this if the key fob is equipped with a chip that is not modified that has been programmed to match the original. The car will not start in the event that the key has not been programmed to match.
It is vital to have a spare Saab key. This is especially important for those who live in a rural location where there are a lot of car thieves. The good thing is that you can find a new key for your Saab without needing to visit a dealer and pay the expensive prices that they charge. In the majority of cases, you can have a brand new key made right on the spot for less than half the cost of what you would pay at a dealer.
Wired key
Saab cars typically come with two keys when they're new. If you only have one, it is recommended to purchase an extra key fob as quickly as you can, because 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 for used cars.
The next step is to connect the wires for the column and row to the microcontroller. This is the most tedious component of the project and it will require lots of soldering. There isn't a standard way to accomplish this, but it's important to plan out the route you'll take and solder the columns and rows. For this keyboard, there are five rows and 17 columns, so there will be 22 microcontroller wires and pins to connect.
After the columns and rows are joined then it's 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 has the black band as a visual indicator 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 help shop customers or even DIY customers in certain cases replace keys in the program and restore lost immobilizer data Sanabria says. The tools plug into the OBD port and guide the user through the process, making it easier than replacing the computer inside the vehicle.
Jump-starting the battery
Most people keep a set of jumper cables in their trunks for emergency situations however, jumping a battery for newer cars might not be the best choice. These vehicles are equipped with electronic devices and computers that communicate with each other. A surge in voltage while a battery is hooked up to another can fry these components and leave your car unable to drive.
Start the vehicle you are using 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 of the good battery (it will have "POS" or "+" on it). Attach the other end to a clear, unpainted metal surface under the hood of the damaged car. The engine block is an excellent choice. Don't connect the black cable to the negative terminal of the dead battery, as it could ignite an ignition spark that ignites the gasoline in the engine bay.
After the cables have been connected, you need to start the vehicle and let it run for about five minutes. Then, disconnect them in reverse. The battery in the Saab 9-3 will charge as you drive. It will take a while for it to return to its original state. It's a good idea to purchase a spare key fob as soon as you can, because replacing the sole working one requires the installation of a brand 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 that is lost, they'll be charged. It's costly to add an additional key and it requires replacing the CIM or TWICE for older models. It's best to have a backup key in case of theft or any other catastrophe, and the best way is to purchase a second key as early as you can. Even when the key is "new", it will not function.
The dealer will charge you the most expensive dollar if you only have one working key. We can reset and reprogram the EEEPROM of your computer to get it ready to accept a replacement key without the need to replace the entire system. That can save you a lot of money. It's also a lot cheaper than waiting until you lose the only key.