Saab Key Programming
Saab cars manufactured since 1994 feature an immobilizer system that relies on keys that are coded. To add an additional key, you need the purchase of a new transponder 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. This is why you should always keep a spare key in your possession.
Transponder key
The transponder key is a piece of hardware equipped with an electronic chip. It transmits a signal to the car when it is inserted into ignition. The car then checks the signal to determine whether it matches the one in the key. If the signals are the same, the car will unlock itself and start. This is a great method to safeguard your car from theft.
Transponder keys are a popular feature in cars, but you should be aware that they aren't as secure as traditional keys made of metal. The metal part of the traditional key can easily be cut and copied, whereas transponders have an electronic chip that safeguards it. The chip is a unique code that's programmed into a car's computer in order to identify it.
The car will recognize the Saab keyfob, and allow it to turn on. But, it's only able to do this if the key fob is unmodified and has a chip that has been programmed to match. Otherwise, the car will reject the key and refuse to start.
It's crucial to ensure that you have a spare key for your Saab. This is especially true when you live in a rural region that has many car thieves. The good thing is that you can find a new key for your Saab without needing to visit an auto dealership and pay the expensive prices that they charge. You can have the replacement key on the spot for less than half of what you would spend at dealerships.
Wired key
Saab cars typically come with two keys upon purchase. If you only have one, it is recommended to purchase an extra key fob as quickly as you can in case you lose it, your car will require the replacement of a CIM unit, and the locking cylinders need to be replaced. This can be expensive particularly for used cars.
The next step is to connect the wires for columns and rows to your microcontroller. This is the toughest part of the project, and it will require lots of soldering. It's not a common way to do it, but you should think about how to connect and solder each column and row. There are 22 microcontroller wires and pins to connect to this keyboard. It includes 5 rows and 17 columns.
Once the rows and columns are soldered, it's time to connect them to key switches. To do this you must place a diode over each key switch pin and solder it. This will shield the pins from current, preventing them from being cut off. A diode can only allow current to flow in one direction, and it comes with a an indicator of black color that indicates which way the current will flow.
A few of the tools that are available at auto parts storeslike the Autel MaxiIM IM608 PRO and IM508 -- could help shop customers or even DIY users in some cases replace keys in the program and restore the lost immobilizer's data, Sanabria says. The tools connect to the OBD port and guide the customer through the procedure, making it simpler than replacing the computer inside the vehicle.
Jump-starting the battery
The majority of people have the set in their trunk to jump start a vehicle in the event of an emergency, but it might not be a good idea for newer cars. They have numerous digital and electronic devices that communicate with each other. A voltage spike when a battery is connected to another one could cause damage to the parts making your car unusable.
Start the vehicle that is working and allow it to run for around two minutes before connecting the cables to the one that is disabled. Attach the red clip on the positive terminal of the good battery. (It will say "POS" or "+".) Attach the other end of the black cable to an unpainted, clean metal surface underneath the car's hood--the engine block is a good choice. saab 9-3 key not accepted contact service should not be connected to the negative terminal of the dead battery. This could result in a spark, which would ignite the gasoline inside the engine compartment.
After the cables have been connected, you can begin the car and let it run for about five minutes. Then disconnect them in reverse. The battery in your Saab 9-3 will be recharged while you drive. It will take some time for it to return to its original state. You should invest in a second key fob, when you can. Replacing the original one that works requires the installation and programming of a new computer chip.
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 in the case of older models. It's best to have a spare key in the event of theft or any other catastrophe, and the best way is to purchase a second key as early as you can. Even it's "new", it won't work.
The dealer will charge you the most expensive dollar for only one working key. We can, however, reset and re-program your computer's EEPROM to prepare it to accept the new key, without replacing the entire system. That can save you lots of money. It's also a lot cheaper than waiting until you lose your only key.