Saab Key Programming
Saab cars that were built prior to 1994 have an immobilizer feature made up of coded keys. A new transponder is required for addition of an extra key, as well as special programming. This is usually handled by the dealer using the Tech2 diagnostic tool.
The issue is that this could be very costly. Always keep a spare set of keys on hand.
Transponder key
The transponder is a piece of key with an electronic chip. This chip sends out a signal when the key is inserted in the ignition. The car then checks to see whether the signal is the same as the one on the key. If the signals match the car will then unlock itself and start. This is a fantastic way to safeguard your car from theft.
Transponder keys could be an extremely popular accessory for automobiles, but they are not as safe as traditional metal keys. The metal part of the traditional key is easily cut and copied, whereas the transponder is protected by an electronic chip which protects it. The chip is equipped with an unique code that is programmed into the car's computers 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 the device has an unmodified chip and has been programmed to match. Otherwise, the car would refuse to accept the key and will not start.
It's important to make sure that you have a spare key for your Saab. This is especially important especially if you live in a rural area that is home to many car thieves. You can get a new key for your Saab by going to the dealership, without having to pay their high cost. In the majority of cases, you can have a brand new key made right on the spot for less than half the cost you would pay at an auto dealer.
Wired key
Saab cars typically come with two keys when they are new. If you have only one, it's a good idea to get an additional key fob as soon as you can in case you lose it, your car will require a new CIM unit, and the locking cylinders will have to be replaced. This can be costly especially for used vehicles.
The next step is to connect the row and columns wires to your microcontroller. This is the most tedious component of the project and will require a lot of soldering. It's not a common way to do it, but you must determine how to route and solder each column and row. There are 22 microcontroller wires and pins that you can connect for this keyboard. It has 5 rows and 17 columns.
Once the rows and columns are soldered, it's the time to connect them to the key switches. To do this, you need to place a diode on each key switch pin and then solder it. This will shield the key switch pins from current and keep them from being shorted. The diode allows current to only flow in only one direction. It is equipped with a visible indicator, a black band, that shows the direction in which the current will flow.
Some of the tools offered at auto parts storeslike the Autel MaxiIM IM608 PRO and IM508 -- could aid shop customers or DIY users in some cases program replacement keys and restore lost immobilizer information, Sanabria says. how to program saab 9-3 key fob into the OBD port and automatically guide the user through the process, making it easier than replacing the computer in the vehicle.
Jump starting the battery
A lot of people keep a set in their trunk to jump-start a vehicle in an emergency, but this might not be the best option for vehicles with newer technology. These cars are equipped with a variety of digital and computer systems that communicate with one another. A surge in voltage when batteries are connected to another could cause damage to the components and render your vehicle unusable.
Start the vehicle you are using and allow it to run for approximately two minutes before you connect the cables to the disabled one. 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 clean unpainted metal surface under the hood of your disabled vehicle. The engine block is an excellent alternative. The black cable should not be connected to the negative terminal of the dead battery. This could create sparks, which could ignite the gasoline that is in the engine compartment.
After the cables have been connected, you should start the car and allow it to run for around five minutes. Then disconnect the cables in reverse. The battery in the Saab 9-3 will charge while you drive. It takes a while for it to fall back. It's a good idea buy a spare key fob as soon as you can, because replacing the sole working one requires the installation of a new computer module and special programming to convince the system that your lost keys aren't attempting to steal the car.
Replacement Case
Many Saab owners only have one key for their vehicle and if they lose it, key, it will cost them. It's expensive to add keys and will require replacing the CIM or TWICE for older models. In the event of theft or any other catastrophe, it is best to have an extra key. Even even if the key is "new", it will not function.
Most locksmiths can't help you if you have only one working key and the dealer will charge for the cost of replacing the computer in your car for a replacement. We can, however, reset and re-program the computer's EEPROM to accept the new key without having to replace the entire system. This can help you save a significant amount of money. It's much cheaper rather than wait until you lose your only key.