Saab Key Programming
Saab cars built since about 1994 have an immobilizer system that is based on codes for keys. A new transponder is required to allow the addition of an extra key, and special programming. This is usually done by the dealer using a Tech2 diagnostic tool.
It can be costly. It is always advisable to keep an extra set of keys at hand.
Transponder key
The transponder is a type of key equipped with an electronic chip. This chip sends out a signal when the key is placed in the ignition. The car will check to see whether the signal matches with the one on the key. If the signals match, the car will unlock and start. This is a great way to deter car theft and keep your vehicle safe from thieves.
Transponder keys are a common feature in automobiles, but you must be aware that they are not as secure as traditional metal keys. While the metal portion of a conventional key can be cut and copied, a transponder is protected by an electronic chip. This chip contains an unique code that is 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. However, it will only do this if the key fob has an unmodified chip that has been programmed to match the original. Otherwise, the car will reject the key and not start.
It is crucial to have a spare Saab key. This is particularly true especially if you live in a rural location that has numerous car thieves. You can get a brand new key for your Saab by visiting the dealership, without having to pay their high prices. You can get an original key made on the spot for less than half of the cost you would pay at an auto dealer.
Key for Wired
Saab cars usually come with two keys when they are new. If you only have one, it's best to acquire an extra key fob as soon as possible as if you lose it, the car will require a new CIM unit and the locking cylinders need to be replaced. This can be expensive particularly for used cars.
The next step is to connect the wires for the column and row to the microcontroller. This is the most difficult part of the project and it will require a lot of soldering. There's no standard way to accomplish this, but it is crucial to plan how you will route and solder the columns and rows. For this keyboard, there are five rows and 17 columns, so there will be 22 microcontroller wires and pins to connect.
After the rows and column are joined then it's time to connect the key switches. Solder a diode on each key switch pin. This will shield the pins that are used for key switches from current and prevent them from being shorted. A diode only allows the current to flow in a single 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 offered at auto parts stores -like the Autel MaxiIM IM608 PRO and IM508 -- can aid shop customers or DIY customers in certain instances create replacement keys and restore lost immobilizer information, Sanabria says. The tools connect to OBD ports and guide the user through each step and make the process more straightforward than replacing the car's computer.
Jump starting the battery
The majority of people have an item in their trunk to jump start a vehicle in an emergency, but it might not be the best idea for newer cars. These cars are equipped with a variety of digital and computers that communicate with each other. A voltage spike when a battery is hooked up to another can fry the components and render your vehicle unable to drive.
Start the vehicle that is working and allow it to run for around two minutes before you connect the cables to the disabled one. Attach the red clip to the positive terminal of the good battery (it will have "POS" or "+" on it). Attach the other end to a clean, unpainted metal surface beneath the hood of the affected vehicle. The engine block is an excellent choice. The black cable should not be connected to the negative terminal of the dead battery. This could cause a spark, which would ignite the gasoline that is in the engine compartment.
After the cables have been connected, begin the car and let it run about five minutes. Then disconnect them in reverse. The battery in your Saab 9-3 is recharged while you drive. It takes a while for it to fall back. It's a good idea purchase a spare fob as soon as you can, because replacing the sole working one requires the installation of a new computer module and a special program to convince it that your lost keys aren't trying to steal the car.
Replacement Case
Many Saab owners have only one key for their car and if they lose it, they'll be charged. It's expensive to add the key and also requires replacing the CIM or TWICE for older models. In the event of theft or any other catastrophe it is advisable to have an extra key. Even when the key is "new", it won't work.
The dealer will charge you top dollar if you only have one working key. saab replacement key can reset and reprogram the computer's EEEPROM to make it ready to accept a new key without replacing the entire system. That can save you a lot of money. It's less expensive instead of waiting until you lose your only key.