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Saab 9-5 Key Replacement Key Programming

saab keys replacement cars that were built prior to 1994 feature an immobilizer mechanism based on coded keys. In order to add a second key, it requires an entirely new transponder and programming. This is usually done by the dealer with a specialized Tech2 diagnostic tool.

The problem is that this can be quite costly. This is why you should always have a spare key on hand.

Transponder key

The transponder key is a piece of hardware with an electronic chip that transmits a signal to the car when it is inserted into ignition. The car then analyzes the signal to see whether it is identical to that of the key. If both signals match the car will then unlock itself and start. This is a great method to protect your car from theft.

Transponder keys could be an extremely popular accessory for cars, but they are not as secure as traditional metal keys. The metal portion of a traditional key can be easily cut and copied, however transponders are protected by an electronic chip that safeguards it. The chip has a unique code that's programmed into a car's computer order 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 is equipped with an unmodified chip and has been programmed to match. If not, the car will reject the key and won't start.

It is important to have a spare Saab key. This is particularly important for those who live in a rural location where there are a lot of car thieves. The good news is that it's possible to obtain a replacement key for your Saab without having to go to an auto dealership and pay the high prices that they ask. In most cases, you can have a brand new key made right on the spot for less than half the cost you'd pay at dealerships.

Wired key

saab 93 key cars are typically delivered with two keys. If you have only one, you need to purchase 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 expensive particularly for used cars.

The next step is to wire the wires of the column and row to the microcontroller. This is the most challenging part of the project and will require a good deal of soldering. There's no standard way to accomplish this, however it is essential to determine how you will route and solder the columns and rows. For this keyboard, there are 5 rows and 17 columns. So there will be 22 microcontroller wires and pins to connect.

After the columns and rows are soldered, it's the time to connect them to key switches. Solder a diode on each key switch pin. This will shield the pins of the key switch from current and keep them from being shorted. A diode permits current to only flow in only one direction. It features a visual indicator that is black, that indicates which direction current will flow.

Sanabria states that some of the tools that are sold in auto parts stores, such as the Autel MaxiIM IM608PRO or IM508, can help shoppers or DIY users to program replacement keys and restore immobilizer information. The tools plug into the OBD port and guide the user through the process, making it more simple than replacing the computer in the vehicle.

Jump starting the battery

Most people keep a set in their trunk to jump-start their vehicle in the event of an emergency, however it might not be a good idea for newer cars. These vehicles have many electronic devices and computers that communicate with each other. A surge in voltage when a battery is hooked up to another battery could fry these components, rendering your car undriveable.

Connect the cables to the vehicle operating. Let it 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 clean, unpainted metal surface beneath the hood of the damaged car. The engine block is an excellent option. The black cable is not to be connected to the negative terminal of the dead battery. This could result in sparks that could ignite gasoline in the engine compartment.

Once the cables are connected, you can start the vehicle you are not using and let it run for about five minutes before disconnecting the cables in reverse order. Be aware that the battery of your saab 93 key fob 9-3 is recharged when you drive, and it can take a while for the battery to come back to its original level. It's a good idea to purchase a spare key fob as soon as you can, because replacing the sole working one requires the installation of a brand new computer module and special programming to convince the system that your lost keys are not trying to steal the car.

Replacement case

saab replacement key programming owners usually have only one car key, and if it is lost, they'll be charged. The reason for this is that it's not cheap to add a new key, and it requires replacing the CIM (Column Integration Module) or TWICE on older models, and programming. It's best to have a spare key in case of theft or other disaster and the best option is to purchase an extra key as early as you can. Don't purchase a used key even if it's "new." Keys that are claimed-new purchased from third-party sellers won't work and are likely to fail at the crucial moment.

Most locksmiths cannot help you if you have only one working key, and the dealer will charge high fees to replace the computer in your car to create a replacement. We can, however, reset and reprogram the computer's EEPROM to accept a new key without replacing the whole system. This can save you a significant amount of money. It's more affordable than wait until you lose the only key.