Saab Key Programming
Saab cars manufactured since 1994 come with an immobilizer system built on coded keys. A new transponder is required in order to enable the addition of an extra key, and special programming. This is usually done by the dealer using a Tech2 diagnostic tool.
The problem is that this can be very expensive. This is the reason why you should always have a spare key available.
Transponder key
The transponder key is a key equipped with an electronic chip. It sends a signal to car when it is placed in the ignition. The car then examines the signal to see whether it is the same as the one on the key. If the signals match the car will then unlock and begin. This is a great method to deter car theft and keep your car safe from thieves.
Transponder keys could be an increasingly popular feature for cars, but they are not as secure as traditional metal keys. The metal portion of a traditional key can easily be cut and copied, however transponders have an electronic chip that safeguards it. This chip contains an unique code that is programmed into the car's computers to identify it.
The car will recognize the Saab keyfob and permit it to turn on. The car can only recognize the key fob if it has an unmodified chip and has been programmed to match. If not, the car will reject the key and not start.
It's essential to ensure that you have a spare key for your Saab. This is especially true when you live in a rural area, where there are a lot of car burglars. The good thing is that you can get a replacement key for your Saab without needing to visit a dealer and pay the high costs they ask. You can have a replacement key made on the spot for less than half of the price you'd 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 is best to acquire an extra key fob as quickly as you can, because if you lose it the car will require an entirely new CIM unit and the locking cylinders will have to be replaced. This can be expensive, especially for used cars.
The next step is connecting the wires for columns and rows to your microcontroller. This is the most tedious part of the project and it will require a lot of soldering. It's not a standard way to go about it, but you need to determine how to route and solder each column and row. For this keyboard, there are five rows and 17 columns. So there will be 22 microcontroller wires and pins that you need to connect.
After the rows and column are joined, it is time to connect the key switches. To do this, you need to place an inverter over each key switch pin and solder it. This will shield the pins of the key switch from current and stop them from being shorted. A diode permits current to only flow in only one direction. It has a visual indicator, a black band, that shows the direction in which the current will flow.
Some of the tools offered at auto parts stores- such as the Autel MaxiIM IM608 PRO and IM508 -- can help customers in the shop, or even DIY customers in certain instances replace keys in the program and restore lost immobilizer data Sanabria says. The tools connect to the OBD port and guide the user through the process, making it easier than replacing the computer inside the vehicle.
Jump starting the battery
Most people keep the set in their trunks to jump-start a vehicle in the event of an emergency, but it might not be the best idea for cars with more modern technology. These vehicles are equipped with numerous electronic devices and computers that communicate with each other. A surge in voltage when the battery is connected to another could cause damage to these components and leave your vehicle unable to drive.
Start the vehicle you are using and allow it to run for around two minutes before you connect the cables to the battery that is not working. Attach the red clip to the positive terminal of the good battery (it will have "POS" or "+" on it). Attach the other end of the black cable to a clean, unpainted metal surface under the disabled car's hood--the engine block is a good option. Do not connect the black cable to the negative terminal on the dead battery because it could ignite an ignition source that ignites gasoline in the engine bay.
Once the cables are connected, you can start the vehicle you are not using and allow it to run for around five minutes before you disconnect the cables in reverse order. The battery in the Saab 9-3 will charge as you drive. It will take a while for it to fall back. It's a good idea invest in a spare key fob as soon as you can, since replacing the one that works requires the installation of a brand new computer module and special programming to convince it that your missing keys aren't trying to steal the car.
Replacement case
Many Saab owners have only one key for their vehicle and if they lose it, they'll be charged. The reason is that it's not cheap to replace a key, and this involves replacing the CIM (Column Integration Module) or TWICE on older models, plus programming. In the event of theft or any other calamity, it is best to have a spare key. However, don't purchase a secondhand key, even the case that it's "new." Keys that are claimed to be new from aftermarket sellers will not be effective and are almost guaranteed to fail at the critical moment.
The majority of locksmiths won't be able to help if you have only one working key and the dealer will charge top dollar to replace the computer in your vehicle to make a replacement. We can reset and reprogram the computer's EEEPROM for it to accept a new key without the need to replace the entire system. saab replacement key programming www.g28carkeys.co.uk can save you lots of money. It's also a lot cheaper than waiting until you lose your sole key.