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A Step-By-Step Instruction For Saab Ignition Key Replacement
Saab Key Programming

Saab cars built since 1994 feature an immobilizer system based on coded keys. To add an additional key, you need a new transponder and special programming. This is usually done at the dealer using a Tech2 diagnostic tool.

This can be expensive. This is why it is important to always have a spare key available.

Transponder key

The transponder is a piece of key that has an electronic chip. The chip sends a signal when the key is placed in the ignition. The car will then check the signal to determine whether it is identical to the one on the key. If the signals are in sync then the car will be able to open and start. This is a great method to prevent auto theft and keep your vehicle safe from thieves.


Transponder keys are an increasingly popular feature in automobiles, however you should be aware they're not as secure as classic metal keys. While the metal portion of a traditional key may be cut and copied, a transponder is protected by an electronic chip. The chip has a unique code that is inserted into a car's computer in order to identify it.

saab key will recognize the Saab keyfob and allow it to be turned on. However, it can only do this if the key fob is equipped with a chip that is not modified that has been programmed to match it. The car won't start in the event that the key is not programmed to match.

It is important to have an extra Saab key. This is particularly important when you live in a rural location that has numerous car thieves. The good part is that you can get a replacement key for your Saab without having to go to an auto dealer and pay the hefty prices that they ask. In the majority of instances, you can get a new key made on-the-spot at a fraction of the price of what you would pay at an auto dealer.

Key for Wired

Saab cars are usually supplied with two keys. If you have only one, it is recommended to get an additional key as soon as you can. This is because if you lose it the car will require a new CIM and the locking cylinders replaced. This can be costly, especially for used cars.

The next step is connecting the wires for columns and rows to your microcontroller. This is the most challenging part of the project and will require a large deal of soldering. There is no standardized way to do this, but it is essential to determine the route you'll take and solder the rows and columns. There are 22 microcontroller wires and pins that you can connect for this keyboard. It has 5 rows and 17 columns.

After the columns and rows are joined then it's time to connect the key switches. To do this, you need to place an inverter over each pin on the key switch and solder it. This will shield the pins from current, preventing them from being cut off. A diode only allows the flow of current to be in one direction, and it comes with a an indicator in black that indicates the direction current will flow.

A few of the tools that are available at auto parts stores- such as the Autel MaxiIM IM608 Pro and IM508 -- may help shop customers or even DIY users in some cases replace keys in the program and restore lost immobilizer information, Sanabria says. The tools connect to OBD ports and help the customer through each step and make the process more straightforward than replacing the vehicle's computer.

Jumpstarting the battery

A majority of people keep a set in their trunks to jump-start their vehicle in an emergency, but it might not be the best option for vehicles with newer technology. These cars have a variety of computers and digital devices that communicate with one another. A surge of voltage when batteries are connected to another can fry the components and render your vehicle unusable.

Connect the cables to the vehicle that is operating. Let it run for two minutes. Attach the red clip to the positive terminal of the battery that is good (it will have "POS" or "+" on it). Attach the other end to a clean unpainted metal surface under the hood of the damaged vehicle. The engine block is a good option. Do not connect the black cable to the negative terminal on the dead battery as this could trigger a spark that ignites the gasoline in the engine bay.

Once the cables are connected the vehicle you are not using and allow it to run for around five minutes before disconnecting the cables in reverse order. Remember that the battery on your Saab 9-3 is charged while you drive, so it can take a while for the battery to come back down again. You should purchase a second key fob, as soon as possible. The replacement of the one that works requires the installation and programming of a brand new computer chip.

Replacement Case

Saab owners usually only have one car key, and if it is lost, they'll be charged. It's expensive to buy the key and also requires replacing the CIM or TWICE for older models. In the event of theft or any other disaster, it is best to have a spare key. However, don't purchase a secondhand key, even when it's "new." Claimed-new keys from a second-hand store will not be effective and are almost guaranteed to fail at the critical moment.

The dealer will charge the highest dollar for only one working key. However, we can reset and re-program your computer's EEPROM to accept the new key without having to replace the whole system. That can help you save money. It's more affordable instead of waiting until you lose the only key.

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