Why We Love Saab Ignition Key Replacement (And You Should Also!)
Saab Key Programming
Saab cars that were built prior to 1994 have an immobilizer feature made up of coded keys. To add an additional key, you need a new transponder, as well as special programming. This is usually done at 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 at hand.
Transponder key
The transponder can be described as a key equipped with an electronic chip. The chip sends a signal when the key is placed into the ignition. The car will check to see whether the signal is the same as the one on the key. If the signals are in sync, the car will open and start. This is a great method to stop car theft and keep your vehicle safe from thieves.
Transponder keys may be an increasingly popular feature for automobiles, but they are not as safe as traditional keys made of metal. The metal component of the traditional key can be easily cut and copied, whereas the transponder is protected by an electronic chip which protects it. The chip is a unique code that's programmed into a car's computer in order to identify it.
The car will recognize the Saab keyfob and permit it to turn on. The car will only recognize the key fob when it has an unmodified chip and has been programmed to match. In the absence of that, the car will reject the key and refuse to start.
It is vital to have a spare Saab key. This is particularly important if you live in a rural location where there are many car thieves. The good news is that you can obtain a replacement key for your Saab without having to go to an auto dealer and pay the high costs that they charge. You can get the replacement key on the spot for less than half the cost you would spend at a dealership.
Wired key
Saab cars are usually delivered with two keys. If you have only one, it's a good idea to get an extra key fob as soon as you can as if you lose it, your car will require the replacement of a CIM unit, and the locking cylinders need to be replaced. This can be costly especially if buying a second-hand car.
The next step is connecting the row and columns wires to your microcontroller. This is the toughest component of the project and it will require a lot of soldering. It's not a common way to do it, but you should consider how you will route and solder each column and row. There are 22 microcontroller wires and pins to connect for this keyboard. It includes 5 rows and 17 column.
After the columns and rows are joined It is now time to connect the key switches. Solder a diode on each key switch pin. This will shield the pins from current, and prevent them from being shortened. The diode will only allow the flow of current to be in one direction, and it also has a an indicator in black that indicates the direction current will flow.
Some of the tools offered at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 -- could assist customers at the shop or DIY customers in certain instances program replacement keys and restore lost immobilizer information, Sanabria says. The tools connect to OBD ports and guide the customer through each step, making the process easier than replacing the car's computer.
Jump-starting the battery
A majority of people keep a set in their trunk to jump start a vehicle in an emergency, but this might not be the best idea for vehicles that are newer. These vehicles are equipped with numerous computers and digital devices which communicate with one another. A voltage spike when a battery is connected to another battery could damage the components, rendering your car undriveable.
Connect the cables to the vehicle operating. Let it run for two minutes. Attach the red clip to the positive terminal on the good battery (it will have "POS" or "+" on it). Attach the other end of the black cable to an unpainted, clean metal surface underneath the disabled vehicle's hood. An engine block is a good option. The black cable is not to be connected to the negative terminal of the dead battery. This could create sparks that could ignite the gasoline in the engine compartment.
Once the cables are connected, you can start the vehicle and let it run for about five minutes. Then disconnect them in reverse. Keep in mind that the battery on your Saab 9-3 is recharged when you drive, and it may take some time for the battery to go back to normal. You should consider purchasing a second key fob, as soon as possible. Replacing the only one that works requires the installation and programming of a brand new computer chip.
Replacement Case
Many Saab owners have only one key for their vehicle and if they lose it, they'll be charged. The reason for this is that it's costly to purchase a new key, and it requires replacing the CIM (Column Integration Module) or TWICE on older models, as well as programming. In the event of theft or other catastrophe it is recommended to have a spare key. But don't buy a used key even when it's "new." saab fob key replacement that are claimed to be new purchased from third-party sellers won't be effective and are almost guaranteed to fail at the critical moment.
The dealer will charge you the highest dollars if you only have one working key. However, we can reset and re-program your computer's EEPROM to prepare it to accept the new key without having to replace the entire system. This could save you a great deal of money. It's more affordable than wait until you lose the only key.