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3 Reasons Your Saab Ignition Key Replacement Is Broken (And How To Fix It)
Saab Key Programming

Saab cars made since 1994 have an immobilizer system that is based on codes for keys. A new transponder is required for inclusion of an additional key, and special programming. This is usually done by the dealer using a special Tech2 diagnostic tool.

The problem is that this can be very costly. This is why it is important to always have a spare key on hand.

Transponder key

The transponder key comes with an electronic chip that sends a signal to the car when it is inserted into the ignition. The car then checks to see if the signal matches the one on the key. If the signals match, the car will unlock and start. This is a great way to stop car theft and keep your car safe from thieves.

Transponder keys are an extremely popular accessory for cars, but they are not as safe as traditional metal keys. While the metal part of a traditional key could be cut and copied but a transponder key is protected by an electronic chip. The chip is equipped with a unique code programmed 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 when it has an unmodified chip and has been programmed to match. Otherwise, the car will reject the key and won't start.


It is essential to ensure that you have an extra key for your Saab. This is especially important when you live in a rural location where there are numerous car thieves. The good part is that you can find a replacement key to your Saab without having to go to a dealer and pay the hefty prices they ask. In the majority of instances, you can get a new key made on-the-spot for less than half the price of what you'd pay at an auto dealer.

Key for Wired

Saab cars are usually supplied with two keys. If you have only one, it's a good idea to get an additional key fob as quickly as you can since if you lose it, your car will require a new CIM unit, and the locking cylinders will have to be replaced. This can be costly particularly 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 great amount of soldering. There isn't a standard way to do this, but it is crucial to plan the route you'll take and solder the columns and rows. There are 22 microcontroller wires and pins that you can connect to this keyboard. It has five rows and 17 columns.

Once the rows and columns are soldered, it's time to connect them to the key switches. Solder a diode on each key switch pin. This will shield the pins of the key switch from current and stop them from being shorted. A diode can only allow the flow of current to be in one direction, and it also has a the black band as a visual indicator that indicates which way the current will flow.

Some of the tools available at auto parts storeslike the Autel MaxiIM IM608 PRO and IM508 -- can help customers in the shop, or even DIY customers in certain instances create replacement keys and restore the lost immobilizer's data, Sanabria says. The tools plug into OBD ports and help the customer through each step making the process simpler than replacing the car's computer.

Jump-starting the battery

Most people keep an item in their trunk to jump-start a car in an emergency, but it may not be the best idea for newer cars. They have numerous digital and electronic devices that communicate with one another. A surge in voltage when a battery is hooked up to another battery could fry the components and render your car unable to drive.

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 read "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 choice. The black cable is not to be connected to the negative terminal of the dead battery. This could trigger sparks, which could ignite the gasoline that is in the engine compartment.

After the cables have been connected, you need to begin the car and let it run about five minutes. Then, disconnect them in reverse. The battery in your Saab 9-3 will be recharged while you drive. It will take a while for it to drop back down. It's a good idea invest in a spare key fob as soon as you can, since replacing the only working one requires the installation of a brand new computer module and special programming to convince it that the lost keys aren't trying to steal the car.

Replacement case

Saab owners often only have one car key, and if it is lost, they'll be charged. It's costly to add a key and requires replacing the CIM or TWICE in the case of older models. It's recommended to have a second key in case of theft or any other catastrophe, and the best way is to purchase a second key as soon as you are able to. Even when the key is "new" it will not function.

Most locksmiths cannot help you with a single working key and the dealer will charge you for the cost of replacing the computer in your vehicle to make a replacement. We can, however, reset and re-program your computer's EEPROM to accept an alternative key without replacing the whole system. This can save you a significant amount of money. replacement key for saab 93 's less expensive than waiting until you loose the only key.

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