Three Reasons Why You're Saab Ignition Key Replacement Is Broken (And How To Fix It)
Saab Key Programming
Saab cars produced since 1994 use an immobilizer that relies on a set of keys. The addition of a key requires a new transponder, as well as special programming. This is usually done by the dealer using a Tech2 diagnostic tool.
The problem is that it can be very expensive. Always keep an extra set of keys in your possession.
Transponder key
The transponder key is a piece of hardware equipped with an electronic chip. It sends a signal to the car when it is placed in the ignition. The car then checks the signal to see whether it matches the one in the key. If the signals match, the car will open and start. This is a great way to safeguard your car from theft.
Transponder keys can be an extremely popular accessory for cars, but they are not as safe as traditional keys made of metal. While the metal portion of a traditional key can be cut and copied, a transponder is protected by an electronic chip. The chip has a unique code which is programmed into a car's computer in order 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 if it is equipped with an unmodified chip and has been programmed to match. The car won't start when the key isn't programmed to match.
It's crucial to ensure that you have an extra key for your Saab. This is especially true for those who live in a rural location where there are a lot of car thieves. You can get a new key for your Saab by visiting the dealership without paying high costs. You can have an original key made on the spot for less than half of the price you'd spend at the dealership.
Key for Wired
Saab cars are usually supplied with two keys. If you have only one, it is a good idea to get an additional key fob as soon as you can as if you lose it, the car will require an entirely new CIM unit, and the locking cylinders need to be replaced. This can be costly, especially if you are buying a second-hand car.
The next step is to connect the wires for columns and row to your microcontroller. This is the most challenging part of the project and will require a great deal of soldering. It's not a common way to go about it, but you should consider how you will route and connect each column and row. There are 22 microcontroller wires as well as pins to connect to this keyboard. It has five rows and 17 columns.
After the columns and rows are soldered, it's time to connect them to the key switches. Solder a diode to each key switch pin. This will protect the pins from current and prevent them from being cut off. A diode allows current to only flow in one direction. It has a visual indicator, a black band, that indicates the direction in which current will flow.
Some of the tools you can find at auto parts storeslike the Autel MaxiIM IM608 PRO and IM508 -- may help shop customers or even DIY customers in certain cases replace keys in the program and restore the lost immobilizer's data, Sanabria says. The tools plug into the OBD port and guide the user through the procedure, making it much easier than replacing the computer in the vehicle.
Jumpstarting the battery
The majority of people have a set of jumper cables in their trunks for emergency situations however, jumping a battery for newer automobiles might not be the best idea. These vehicles are equipped with many digital and computers that communicate with one another. A voltage surge when a battery is connected to another battery could damage the components and render your vehicle unusable.
Start saab key programmer working vehicle and let it run for about two minutes before connecting the cables to the disabled one. Attach the red clip on the positive terminal of the battery that is good. (It will read "POS" or "+".) Attach the other end to a clean and unpainted metal surface under the hood of your disabled car. The engine block is a great option. Do not connect the black cable to the negative terminal on the dead battery, since this could trigger an ignition that ignites the gasoline in the engine bay.
Once the cables are connected, start the vehicle you are not using and let it run for about five minutes before you disconnect them in reverse order. The battery in the Saab 9-3 will charge as you drive. It will take some time for it to drop back down. It's a good idea to purchase 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 a special program to convince it that your lost keys aren't trying to steal the car.
Replacement case
Saab owners often only have one car key, and if that is lost, they will be charged. It's expensive to add keys and will require replacing the CIM or TWICE for older models. It is best to have a spare key in the event of theft or any other catastrophe and the best option is to buy an extra key as soon as you are able to. But don't buy a used key, even the case that it's "new." Keys that are claimed-new from sellers selling aftermarket keys won't work and are almost guaranteed to fail in the crucial moment.
The dealer will charge you the most expensive dollar if you have only one working key. We can reset and reprogram the EEEPROM of your computer to be able to accept a replacement key without having to replace the entire system. This could save you a significant amount of money. It's more affordable rather than wait until you loose the only key.