Saab Key Programming
Saab cars that were built prior to 1994 have an immobilizer system built on coded 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 a spare set of keys on hand.
Transponder key
The transponder key is a piece of hardware with an electronic chip that sends a signal to car when it is put into the 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 way to stop car theft and keep your car safe from thieves.
Transponder keys are an extremely popular accessory for cars, but they're not as secure as traditional metal keys. While the metal part of a traditional key could be cut and copied the transponder is protected by an electronic chip. This chip contains an unique code that is programmed 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. The car will only recognize the key fob if it is equipped with a chip that is unmodified and programmed to match. Otherwise, the car will reject the key and not start.
It is crucial to have a spare Saab key. This is especially true if you reside in a rural area that is home to many car thieves. You can purchase a new key for your Saab by going to the dealership without paying high costs. In most instances, you can get a new key created on-the-spot at a fraction of the cost you would pay at the dealer.
saab ignition key come with two keys when they are new. If you only have one, it is an ideal idea to purchase an additional key fob as soon as possible, because if you lose it, your car will require the replacement of a CIM unit, and the locking cylinders have to be replaced. This can be expensive especially for used vehicles.
The next step is to wire the wires for the column and row to the microcontroller. This is the most challenging part of the project and will require a large deal of soldering. There is no standardized way to accomplish this, however it is essential to determine the way you'll route and solder the rows and columns. For this keyboard, there are 5 rows and 17 columns. This means there will be 22 microcontroller pins and wires to connect.
Once the rows and columns are soldered, it's time to connect them to key switches. Solder a diode to each key switch pin. This will shield the pins on the key switch from current and keep them from being shorted. A diode allows current to flow in one direction, and it also has a an indicator in black that indicates the direction in which current will flow.
Some of the tools available at auto parts stores -like the Autel MaxiIM IM608 Pro and IM508 -- may help customers in the shop, or even DIY users in some cases program replacement keys and restore lost immobilizer information, Sanabria says. The tools connect to the OBD port and automatically guide the customer through the procedure, making it simpler than replacing the computer in the vehicle.
Jump starting the battery
A lot of people keep an assortment of tools in their trunk to jump-start a car in an emergency, however it might not be the best idea for cars with more modern technology. These cars have a variety of electronic devices and computers that communicate with each other. A surge of voltage when the battery is connected to another one could cause damage to the parts making your car unusable.
Start the working vehicle and let it run for about two minutes before connecting the cables to the non-working one. Attach the red clip to the positive terminal of the battery that's good. (It will say "POS" or "+".) Attach the other end of the black cable to an unpainted, clean metal surface underneath the disabled car's hood. The engine block would be a good choice. The black cable is not to be connected to the negative terminal of the dead battery. This could cause sparks, which could ignite the gasoline inside the engine compartment.
After the cables have been connected, you should start the vehicle 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 return to its original state. It is recommended to purchase another key fob when you can. The replacement of the one that works requires the installation and programming of a new computer chip.
Replacement case
Many Saab owners only have one key for their car and if they lose that the cost will be. It's expensive to add keys and will require replacing the CIM or TWICE in the case of older models. It is recommended to have a spare key in case of theft or any other catastrophe and the most effective way is to purchase an extra key as early as you can. Don't purchase a used key even it's "new." Claimed-new keys purchased from third-party sellers won't perform and are almost certain to fail at the critical moment.
The dealer will charge the highest dollar for only one working key. However, we can reset and re-program the computer's EEPROM in order to prepare it to accept an alternative key without replacing the whole system. This could save you a lot of money. It's cheaper to do this than wait until you lose your only key.