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Saab Key Programming Saab cars produced since 1994 utilize an immobilizer system that is based on keys that are coded. A new transponder is required for addition of a second key, as well as special programming. This is usually handled by the dealer using the Tech2 diagnostic tool. It can be costly. It is always advisable to keep an extra set of keys on hand. Transponder key The transponder is a key that is equipped with an electronic chip. This chip sends out a signal when the key is placed into the ignition. saab 93 replacement key The Key Lab will then check the signal to see whether it is identical to that of the key. If the signals are in sync it will unlock and begin. This is an excellent way to protect your car from theft. Transponder keys are a common feature in cars, but you must be aware that they're not as secure as classic metal keys. The metal component of the traditional key can easily be cut or copied, while a transponder has an electronic chip which protects it. This chip contains an unique code that is inserted into a car's computers in order to identify it. When a Saab key fob is used, the car recognizes it and allows it to turn on. However, it can only do this if your key fob is unmodified and has a chip that has been programmed to match the original. The car won't start in the event that the key has not been programmed to match. It is essential to ensure that you have a spare key for your Saab. This is especially true if you reside in a rural area with numerous car thieves. The good thing is that you can find a new key for your Saab without needing to visit a dealership and pay the hefty prices that they ask. You can get the replacement key on the spot at a fraction of the cost you would pay at an auto dealer. Wired key Saab cars are usually delivered with two keys. If you own only one, you need to purchase an extra key as soon as you can. This is because if the key is lost the car will require an entirely new CIM and the locking cylinders replaced. This can be expensive particularly for used cars. The next step is connecting the row and columns wires to your microcontroller. This is the most difficult part of the project and it will require lots of soldering. There is no standardized way to do this, but it is crucial to plan how you will route and solder the columns and rows. There are 22 microcontroller pins and wires to connect to this keyboard. It includes 5 rows and 17 columns. Once the rows and columns are soldered, it's the time to connect them to key switches. To do this you must place a diode across each key switch pin and then solder it. This will shield the pins from current, and prevent them from being shortened. A diode permits current to only flow in one direction. It is equipped with a visible indicator, a black band, that indicates the direction in which current will flow. Some of the tools offered at auto parts stores -like the Autel MaxiIM IM608 PRO and IM508 — may assist customers at the shop or DIY customers in some cases create replacement keys and restore the lost immobilizer's data, Sanabria says. The tools plug into the OBD port and guide the user through the procedure, making it simpler than replacing the computer in the vehicle. Jump-starting the battery A lot of people keep a set of jumper cables in their trunks for emergencies, but jumping a battery on modern vehicles might not be the best idea. These cars have a variety of electronic devices and computers 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 inoperable. Connect the cables to the vehicle operating. Let it run for two minutes. 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 car's hood. The engine block would be a good option. The black cable is not to be connected to the negative terminal of the dead battery. This could result in sparks, which could ignite the gasoline inside the engine compartment. Once the cables are connected, turn on the vehicle that is disabled and let it run for approximately five minutes before you disconnect them in reverse order. Be aware that the battery in the Saab 9-3 will be charged while you drive, so it can take a while for the battery to come back to normal. You should consider purchasing another key fob as soon as possible. Replacing the only one that works requires the installation and programming of a brand new computer chip. Replacement Case Saab owners usually have only one car key, and if that is lost, they'll be charged. It's expensive to purchase an additional key and it requires replacing the CIM or TWICE in the case of older models. In the event of theft or any other disaster it is best to have an extra key. But don't buy a used key, even if it's “new.” Keys that are claimed-new from a second-hand store will not perform and are almost certain to fail in the most critical moment. The dealer will charge you top dollar for only one working key. We can, however, reset and re-program the computer's EEPROM to accept the new key, without replacing the whole system. This could save you a significant amount of money. It's also cheaper than waiting until you lose your sole key.