Saab Key Programming
Saab cars made from 1994 have an immobilizer system based on a set of keys. To add an additional key, you need a new transponder and special programming. This is usually done at the dealer with a specialized Tech2 diagnostic tool.
It can be costly. Always keep a spare set of keys in your possession.
Transponder key
The transponder is a piece of key that is equipped with an electronic chip. This chip sends a signal when the key is inserted into the ignition. The car checks to see whether the signal matches with the one on the key. If the signals are identical it will open itself and start. This is a great way to safeguard your car from theft.
Transponder keys are a popular addition to cars, but they are not as secure as traditional keys made of metal. The metal component of a traditional key can easily be copied and cut, but transponders are protected by an electronic chip that safeguards it. The chip is equipped with a unique code embedded into the car's computer to identify it.
When a Saab key fob is used the car recognizes it and allows it to turn on. The car will only recognize the key fob if it has an unmodified chip and has been programmed to match. If not, the car will reject the key and refuse to start.
It's crucial to ensure that you have an extra key for your Saab. This is especially important for those who live in a rural area, where there are a lot of car thieves. You can purchase a new key for your Saab by visiting the dealership without paying expensive cost. In most instances, you can get a brand new key made right on the spot at a fraction of the cost you would pay at an auto dealer.
Wired key
Saab cars usually come with two keys when they're new. If you only have one, it's a good idea to get 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 will need to be replaced. This could be expensive especially if you're buying a used car.
The next step is connecting the wires of columns and row to your microcontroller. This is the most difficult part of the project and requires a significant amount of soldering. It's not a common way to go about it, however, you should plan how to route and solder each column and row. There are 22 microcontroller pins and wires to connect to this keyboard. It has five rows and 17 columns.
After the columns and rows are soldered, it's the time to connect them to the key switches. Solder a diode to each key switch pin. This will shield the pins of the key switch from current and keep them from being shorted. A diode lets current only flow in only one direction. It has a visual indicator, a black band, that shows the direction in which the current will flow.
A few of the tools that are available at auto parts stores -- such as the Autel MaxiIM IM608 PRO and IM508 -- can help customers in the shop, or even DIY users in some cases create replacement keys and restore lost immobilizer data Sanabria says. The tools connect to the OBD port and guide the customer through the procedure, making it much easier than replacing the computer in the vehicle.
Jumpstarting the battery
A lot of people keep a set of jumper cables in their trunk to use in an emergency, but jumping a battery on modern cars might not be the most efficient option. These vehicles are equipped with digital and computer systems that communicate with one another. A surge of voltage when the battery is connected another battery could damage the components and render your vehicle unusable.
Connect the cables to the vehicle that is working. Allow it to run for two minutes. 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 to a clear, unpainted metal surface under the hood of the damaged car. The engine block is a great alternative. Do not connect the black cable to the negative terminal of the dead battery, since this could cause an ignition that ignites the gasoline in the engine bay.
After the cables have been connected, you should begin the car and allow it to run for around five minutes. Then, disconnect the cables in reverse. The battery in your Saab 9-3 will recharge while you drive. It will take some time for it to return to its original state. You should invest in an additional key fob when you can. saab 93 key fob of the one that works requires the installation and programming of a brand new computer chip.
Replacement Case
Many Saab owners have only one key for their car and if they lose it, key, it will cost them. It's costly to add the key and also requires replacing the CIM or TWICE for older models. In the event of theft, or other catastrophe, it is best to have an extra key. Even it's "new", it won't work.
The majority of locksmiths won't be able to help if you have only one working key and the dealer will charge you top dollar to replace the computer in your vehicle to create a replacement. We can, however, reset and reprogram the computer's EEPROM to accept a new key without replacing the whole system. That can save you a lot of money. It's less expensive instead of waiting until you loose the only key.