Why We Enjoy Saab Ignition Key Replacement (And You Should Too!)
Saab Key Programming
Saab cars made since 1994 come with an immobilizer system that is based on codes for keys. A new transponder is required for inclusion of an additional key, as well as special programming. This is usually handled by the dealer using a Tech2 diagnostic tool.
This can be expensive. This is why you should always have a spare key on hand.
Transponder key
The transponder key is a piece of hardware with an electronic chip that transmits a signal to the car when it is inserted into ignition. The car is able to check whether the signal is the same as the one on the key. If the signals are identical, the car will unlock itself and start. This is a great method to deter car theft and keep your vehicle safe from thieves.
Transponder keys are a common feature in cars, but you must be aware that they aren't as secure as classic keys made of metal. While the metal component of a conventional key can be cut and copied but a transponder key is protected by an electronic chip. The chip is a unique code that is inserted into the 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. But, it's only able to do this if your key fob has a non-modified chip that has been programmed to match it. The car won't start in the event that the key has not been programmed to match.
It is essential to have an extra Saab key. This is especially important especially if you reside in a rural location where there are many car thieves. You can obtain a replacement key for your Saab by visiting the dealership, without having to pay their pricey prices. In most cases, you can have a new key created on-the-spot at a fraction of the price of what you'd pay at an auto dealer.
saab 93 key fob are usually supplied with two keys. If you only have one, it is recommended to purchase an extra key fob as soon as is possible, because if you lose it the car will require a new CIM unit and the locking cylinders will have to be replaced. This can be costly especially for cars that are used.
The next step is to connect the row and columns wires to your microcontroller. This is the most tedious part of the project, and it will require lots of soldering. There is no standard method to do this, but it is essential to determine the route you'll take and solder the rows and columns. For this keyboard, there are five rows and 17 columns. This means there will be 22 microcontroller pins and wires to connect.
After the columns and rows are soldered, it's time to connect them to the key switches. Solder a diode on each key switch pin. This will protect the pins that are used for key switches from current and also prevent them from being shorted. A diode lets current only flow in only one direction. It has a visual indicator of a black line that indicates the direction in which current will flow.
Sanabria states that some of the tools sold in auto parts stores, like the Autel MaxiIM IM608PRO and the IM508, can help customers shopping or DIY customers to program replacement keys and restore the immobilizer's data. The tools connect to the OBD port and automatically guide the customer through the procedure, making it simpler than replacing the computer inside the vehicle.
Jumpstarting the battery
Most people keep a set of jumper cables in their trunk to use in an emergency, but jumping a battery for newer vehicles may not be the best idea. They have numerous computers and digital devices that communicate with each other. A surge in voltage while the battery is connected to another can fry these components and leave your car unable to drive.
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 battery that is good. (It will say "POS" or "+".) Attach the other end to a clear, unpainted metal surface under the hood of the disabled car. The engine block is a great alternative. The black cable is not to be connected to the negative terminal of the dead battery. This could cause sparks that could ignite the gasoline inside the engine compartment.
Once the cables are connected, you can start the disabled vehicle and let it run for approximately five minutes before you disconnect them in reverse order. The battery in your Saab 9-3 will recharge as you drive. It takes a while for it to recharge again. You should purchase a second key fob, as soon as possible. The replacement of the one that works requires the installation and programming of a new computer chip.
Replacement case
Saab owners often only have one car key, and if it is lost, they will be charged. It's costly 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 recommended to have an extra key. Even when the key is "new", it will not function.
Most locksmiths cannot help you in the event that you only have one working key and the dealer will charge you high prices to replace the computer in your car for a replacement. We can, however, reset and reprogram the computer's EEPROM to accept the new key, without replacing the whole system. This can save you a great deal of money. It's less expensive instead of waiting until you loose the only key.