Saab Key Programming
Saab cars built since 1994 use an immobilizer that relies on coded keys. To add an additional key, you need the purchase of a new transponder as well as special programming. This is usually done by the dealer using the Tech2 diagnostic tool.
This can be expensive. Always keep a spare set of keys on hand.
Transponder key
The transponder key is a key equipped with an electronic chip. It sends a signal to car when it is inserted into the ignition. The car then examines the signal to determine whether it is the same as that of the key. If the signals match it will open itself and start. This is a great way to prevent auto theft and keep your vehicle safe from thieves.
Transponder keys are a favored feature in automobiles, but you must be aware that they aren't as secure as classic keys made of metal. The metal portion of a traditional key can easily be cut and copied, whereas transponders have an electronic chip that protects it. This chip contains an unique code that's programmed into a car's computer order to identify it.
The car will recognize the Saab keyfob and permit it to be turned on. The car will only recognize the key fob if the device has a chip that is unmodified and programmed to match. In the absence of that, the car will reject the key and won't start.
It is essential to ensure that you have a spare key for your Saab. This is especially important when you live in a rural region that has many car thieves. You can purchase a new key for your Saab by going to the dealership and not paying their pricey cost. You can get an original key made on the spot for less than half of the price you'd spend at the dealership.
Key for Wired
Saab cars are usually delivered with two keys. If you only have one, it's an ideal idea to purchase an extra key fob as soon as possible since if you lose it the car will require a new CIM unit, and the locking cylinders need to be replaced. This could be expensive especially if you're purchasing a used car.
The next step is to wire the column and row wires to the microcontroller. This is the most challenging part of the project and will require a good amount of soldering. There's no standard way to go about it, but you need to consider how you will route and connect each column and row. There are 22 microcontroller wires and pins to connect to this keyboard. It includes 5 rows and 17 columns.
After the columns and rows are soldered together It is now time to connect the key switches. To do this, put a diode across each pin of the key switch and solder it. This will protect the pins from current and prevent them from being cut off. A diode allows current to only flow in one direction. It comes with a visual indicator with a black band that shows the direction in which the current will flow.
Some of the tools offered at auto parts stores -- such as the Autel MaxiIM IM608 Pro and IM508 -- could help shop customers or even DIY customers in certain cases program replacement keys and restore lost immobilizer information, Sanabria says. saab 9-3 key programming into the OBD port and automatically guide the user through the procedure, making it much easier than replacing the computer inside the vehicle.
Jump starting the battery
A lot of people keep the set in their trunks to start a vehicle in an emergency, but it might not be the best option for vehicles with newer technology. These vehicles are equipped with many digital and computers that communicate with each other. A voltage spike when a battery is hooked up to another can fry these components and render your car unable to drive.
Start the vehicle you are using and let it run for about two minutes before you connect the cables to the one that is disabled. Attach the red clip to the positive terminal on the battery that is good (it will have "POS" or "+" on it). Attach the other end of the black cable to an unpainted, clean metal surface beneath the damaged car's hood. The engine block is a good choice. The black cable is not to be connected to the negative terminal of the dead battery. This could create sparks, which would ignite the gasoline inside the engine compartment.
Once the cables are connected, turn on the disabled vehicle and let it run for about five minutes before you disconnect the cables in reverse order. The battery in the Saab 9-3 will charge while you drive. It will take some time for it to return to its original state. It is a good idea to purchase a spare fob as soon as you can, since replacing the only working one requires the installation of a new computer module and special programming to convince it that the lost keys aren't trying to steal the car.
Replacement case
Saab owners usually have only one car key, and if that is lost, they'll be charged. 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 disaster it is advisable to have an extra key. Don't buy a secondhand key, even the case that it's "new." Claimed-new keys from a second-hand store will not work and are likely to fail in the crucial moment.
The dealer will charge the highest dollar for only one working key. However, we can reset and reprogram the computer's EEPROM to accept a new key without replacing the entire system. This can save you a lot of money. It's also less expensive than waiting until you lose your sole key.