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saab key fob repair cars made since 1994 utilize an immobilizer system that relies on coded keys. A new transponder is required to allow the inclusion of an additional key, as well as special programming. This is usually done at the dealer using a Tech2 diagnostic tool.

The problem is that it can be extremely expensive. This is the reason why you should always have a spare key available.

Transponder key

The transponder key comes equipped with an electronic chip. It transmits a signal to the car when it is inserted into the ignition. The car then examines the signal to see whether it is identical to the one on the key. If the signals are identical the car will then unlock itself and begin. This is a fantastic way to protect your car from theft.

Transponder keys could be an increasingly popular feature for automobiles, but they are not as safe as traditional metal keys. The metal portion of a traditional key can be easily cut or copied, while transponders have an electronic chip that protects it. The chip is a unique code that is inserted 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. But, it's only able to do so if the key fob is unmodified and has a chip that has been programmed to match. The car will not start in the event that the key is not programmed to match.

It's essential to ensure that you have an extra key for your Saab. This is particularly important especially if you reside in a rural region where there are many car thieves. You can purchase a new key for your Saab by going to the dealership and not paying their high cost. You can have a replacement key made on the spot at a fraction of the cost you would pay at a dealership.

Wired key

Saab cars are usually provided with two keys. If you have only one, it is best to acquire an extra key fob as soon as you can since if you lose it, the car will require the replacement of a CIM unit, and the locking cylinders need to be replaced. This can be costly especially for cars that are used.

The next step is to wire the wires for the column and row to the microcontroller. This is the most difficult part of the project and will require a large amount of soldering. There is no standard method to accomplish this, however it's important to plan out the route you'll take and solder the rows and columns. There are 22 microcontroller pins and wires to connect for this keyboard. It has 5 rows and 17 column.

Once the rows and columns are soldered, it's the time to connect them to key switches. To do this, place a diode over each key switch pin and then solder it. This will protect the key switch pins from current and keep them from being shorted. A diode allows the current to flow in a single direction, and has a a black band visual indicator that shows the direction in which current will flow.

Sanabria says that some of the tools that are sold in auto parts stores, including the Autel MaxiIM IM608PRO and IM508 can assist customers who are shopping or DIY customers to program replacement keys and restore immobilizer data. The tools plug into the OBD port and automatically 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 few sets of jumper cables in their trunks for emergencies however, jumping a battery in newer vehicles may not be the best choice. These vehicles are equipped with numerous digital and computers that communicate with one another. A voltage surge while a battery is hooked up to another one could damage the components and render your car undriveable.

Start the vehicle you are using and allow it to run for approximately two minutes before connecting the cables to the non-working one. Attach the red clip on the positive terminal of the good battery. (It will say "POS" or "+".) Attach the other end to a clear, unpainted metal surface under the hood of the affected vehicle. The engine block is a great choice. The black cable is not to be connected to the negative terminal of the dead battery. This could create sparks, which would ignite the gasoline inside the engine compartment.

Once the cables are connected the vehicle you are not using and allow it to run for around five minutes before you disconnect the cables in reverse order. Be aware that the battery of the Saab 9-3 gets recharged when you drive, so it can take a while for the battery to come back to its original level. You should invest in another key fob when you can. The replacement of the one that works requires the installation and programming of a brand new computer chip.

Replacement case

Many Saab owners only have one key for their vehicle and if they lose it, the cost will be. It's expensive to buy the key and also requires replacing the CIM or TWICE in the case of older models. It is recommended to have a backup key in the event of theft or any other catastrophe the best solution is to purchase an extra key as quickly as you can. Even when the key is "new", it will not work.

Most locksmiths can't help you if you have only one working key, and the dealer will charge high prices to replace the computer in your vehicle to make a replacement saab car keys. However, we can reset and re-program the computer's EEPROM to prepare it to accept the new key without having to replace the entire system. That can save you a significant amount of money. It's less expensive than waiting until you loose the only key.