saab ignition key Replacement Key Programming
saab 9 3 key replacement cars manufactured since 1994 feature an immobilizer system that relies on coded keys. A new transponder is required for addition of a second key, and special programming. This is usually handled by the dealer using a Tech2 diagnostic tool.
It can be costly. This is why you should always have a spare key at hand.
Transponder key
The transponder key is a key with an electronic chip that sends a signal back to the car when it is inserted into the ignition. The car then checks to see whether the signal matches the one on the key. If the signals match the car will be able to unlock itself and start. This is a great method to protect your vehicle from theft.
Transponder keys can be a popular addition to automobiles, but they are not as secure as traditional metal keys. While the metal part of a traditional key can be cut and copied the transponder is protected by an electronic chip. This chip has 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 it is equipped with an unmodified chip and programmed to match. In the absence of that, the car will reject the key and refuse to start.
It is important to have a spare Saab key. This is especially true if you live in a rural area, where there are many car thieves. The good news is that you can find a replacement key to your saab key replacement without needing to visit an auto dealer and pay the high costs that they ask. In most cases, you can have a new key made on-the-spot at a fraction of the cost of what you'd pay at a dealer.
Wired key
Saab cars typically come with two keys when they are new. If you have only one, it is recommended to purchase an additional key fob as soon as is possible since if you lose it, the car will require a new CIM unit, and the locking cylinders will need to be replaced. This could be expensive, especially if you are purchasing a used car.
The next step is to connect the row and column wires to the microcontroller. This is the most difficult part of the project and will require lots of soldering. There's no standard way to accomplish this, however it is important to think about the routes you'll use to solder the columns and rows. For this keyboard, there are 5 rows and 17 columns, so there will be 22 microcontroller wires and pins that you need to connect.
After the columns and rows are soldered, it's the time to connect them to key switches. Solder a diode to each key switch pin. This will shield the pins that are used for key switches from current and also prevent them from being shorted. A diode lets current only flow in only one direction. It is equipped with a visible indicator with a black band that shows which way current will flow.
Some of the tools you can find at auto parts storeslike the Autel MaxiIM IM608 Pro and IM508 -- can help shop customers or even DIY customers in some cases programme replacement keys and recover lost immobilizer information, Sanabria says. The tools connect to OBD ports and guide the user through each step which makes the process much easier than replacing the car's computer.
Jump starting the battery
Most people keep a few sets of jumper cables in their trunks to use in an emergency, but jumping a battery for newer vehicles might not be the best idea. These cars have a variety of digital and computer systems that communicate with each other. A surge in voltage while a battery is hooked up to another one could damage these components and render your vehicle unable to drive.
Start the vehicle that is working and allow it to run for approximately two minutes before you connect the cables to the battery that is not working. Attach the red clip on the positive terminal of the battery that is good. (It will say "POS" or "+".) Attach the other end of the black cable to a clean, unpainted metal surface underneath the vehicle's hood. An engine block is an ideal choice. Do not connect the black cable to the negative terminal on the dead battery, since this could trigger an ignition source that ignites gasoline in the engine bay.
Once the cables are connected, start the vehicle you are not using and let it run for approximately five minutes before disconnecting them in reverse order. Remember that the battery on the saab keys 9-3 will be charged during your drive, which means it may take some time for the battery to come back to normal. It's a good idea purchase a spare fob as soon as you can, because replacing the only working one requires the installation of a brand new computer module and a special program to convince the system that your lost keys are not trying to steal the car.
Replacement Case
Many Saab owners have only one key for their vehicle and if they lose it, it's going to cost them. It's expensive to buy a key and requires replacing the CIM or TWICE in the case of older models. In the event of theft or any other calamity it is recommended to have a spare key. Even when the key is "new" it will not function.
The dealer will charge the highest dollar for only one working key. However, we can reset and re-program your computer's EEPROM to prepare it to accept a new key without replacing the entire system. This could help you save a significant amount of money. It's also less expensive than waiting until you lose the only key.