The History Of Saab Ignition Key Replacement
Saab Key Programming
Saab cars made since 1994 have an immobilizer system that is based on codes for keys. The addition of a key requires 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 can be extremely expensive. You should always keep a spare set of keys in your possession.
Transponder key
The transponder is a type of key with an electronic chip. This chip sends out a signal when the key is put in the ignition. The car checks to see if the signal matches the one on the key. If the signals are identical the car will be able to unlock itself and start. This is a fantastic way to protect your vehicle from theft.
Transponder keys could be an extremely popular accessory for cars, but they are not as secure as traditional keys made of metal. The metal portion of a traditional keys can be easily cut and copied, whereas a transponder has an electronic chip that guards it. The chip has a unique code that is inserted into a car's computer order to identify it.
The car will recognize the Saab keyfob and permit it to turn on. The car can only recognize the key fob when it has a chip that is unmodified and programmed to match. Otherwise, the car would reject the key and not start.
It is crucial to have an extra Saab key. This is particularly important especially if you live in a rural location that has numerous car thieves. You can get a brand new key for your Saab by visiting the dealership without paying high prices. You can get the replacement key on the spot for less than half of the cost you would pay at an auto dealer.
Wired key
Saab cars typically come with two keys upon purchase. If you have only one, it is recommended to get an additional key as soon as you can. This is because if the key is lost the car will require a new CIM and the locking cylinders replaced. This can be costly, especially if you are purchasing a used car.
The next step is connecting the wires for columns and rows to your microcontroller. This is the toughest part of the project, and will require a lot of soldering. There isn't a standard way to do this, but it's important to plan out the way you'll route and solder the columns and rows. There are 22 microcontroller wires and pins to connect for this keyboard. It has five rows and 17 columns.
After the columns and rows are joined then it's time to connect the key switches. To do this, put a diode over each pin of the key switch and solder it. This will protect the pins from current, thus preventing them from being cut off. The diode will only allow current to flow in one direction, and it has the black band as a visual indicator that shows the direction in which current will flow.
Sanabria says that some of the tools offered in auto parts stores, such as the Autel MaxiIM IM608PRO and the IM508 are able to assist shoppers or DIY users to program replacement keys and restore the immobilizer's data. The tools plug into OBD ports and help the customer through each step which makes the process much easier than replacing the car's computer.
Jumpstarting the battery
Most people keep a few sets of jumper cables in their trunks in case of emergency, but jumping a battery for newer cars might not be the most efficient option. These vehicles are equipped with many computers and digital devices which communicate with each other. saab 9-3 replacement key G28 when the battery is connected another could cause damage to the components making your car inoperable.
Connect the cables to the vehicle operating. Allow it to run for two minutes. Attach the red clip to the positive terminal of the good battery. (It will read "POS" or "+".) Attach the other end to a clean, unpainted metal surface beneath the hood of the affected vehicle. The engine block is a great alternative. The black cable is not to be connected to the negative terminal of the dead battery. This could trigger a spark, which would ignite the gasoline inside the engine compartment.
After the cables have been connected, you can start the car and allow it to run for around five minutes. Then disconnect the cables in reverse. Be aware that the battery of the Saab 9-3 gets recharged when you drive, and it could take a while for the battery to go back down again. You should purchase a second key fob, when you can. Replacing the 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 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 calamity, it is best to have a spare key. Don't buy a secondhand key, even the case that it's "new." Keys that are claimed-new from a second-hand store will not work and are likely to fail in the crucial moment.
The dealer will charge you the highest dollar if you only have one working key. We can reset and reprogram the computer's EEEPROM to be able to accept a replacement key without having to replace the entire system. That can save you lots of money. It's more affordable than waiting until you lose the sole key.