Saab Key Programming
Saab cars built since about 1994 feature an immobilizer mechanism made up of coded keys. A new transponder is required for inclusion of an additional key, as well as special programming. This is usually done by the dealer using the Tech2 diagnostic tool.
The problem is that it can be very expensive. It is recommended to always have an extra set of keys on hand.
Transponder key
The transponder key is a key with an electronic chip that transmits a signal to the car when it is put into the ignition. The car then analyzes the signal to see whether it matches the one that is in the key. If the signals are identical, the car will unlock itself and start. This is a great way to protect your vehicle from theft.
Transponder keys are an extremely popular accessory for cars, but they're not as secure as traditional keys made of metal. The metal component of a traditional key is easily cut and copied, however transponders are protected by an electronic chip that guards it. The chip has a unique code that is programmed into the car's computers to identify it.
The car will recognize the Saab keyfob and allow it to turn on. The car can only recognize the key fob if it is equipped with an unmodified chip and programmed to match. The car won't start if the key is not programmed to match.
It's essential to ensure that you have an extra key for your Saab. This is particularly important especially if you reside in a rural area, where there are many car thieves. The good thing is that you can find a new key for your Saab without having to go to a dealer and pay the expensive prices that they demand. You can have a replacement key created on the spot for less than half of the cost you would pay at the dealership.
Key for Wired
Saab cars typically come with two keys when they're new. If you have only one, it is recommended to get an additional key as soon as you can. This is because, if it's lost and the car is damaged, it will require a new CIM and the locking cylinders replaced. This can be expensive particularly for used cars.
The next step is to connect the row and columns wires to your microcontroller. This is the most challenging part of the project and will require a great amount of soldering. There is no standardized way to do this, but it is crucial to plan how you will route and solder the rows and columns. For saab replacement keys uk , there are 5 rows and 17 columns, so there will be 22 microcontroller wires and pins that you need to connect.
After the columns and rows are joined It is now time to connect the key switches. To do this you must place an inverter over each pin of the key switch and solder it. This will shield the pins from current and prevent them from being cut off. The diode will only allow the current to flow in a single direction, and has a an indicator in black that indicates the direction current will flow.
Sanabria states that a number of the tools available in auto parts stores, including the Autel MaxiIM IM608PRO or IM508 can assist shoppers or DIY customers to program replacement keys and restore the immobilizer's data. The tools connect to OBD ports and guide the user through each step and make the process more straightforward than replacing the vehicle's computer.
Jump-starting the battery
Most people keep a set of jumper cables in their trunk for emergency situations, but jumping a battery on modern vehicles may not be the best choice. These vehicles are equipped with a number of computers and digital devices that communicate with each other. A voltage spike when a battery is hooked up to another could cause damage to these components, rendering your car undriveable.
Start the vehicle that is working and allow it to run for approximately two minutes before you connect the cables to the non-working one. Attach the red clip to the positive terminal of the good battery. (It will say "POS" or "+".) Attach the other end of the black cable to a clean, unpainted metal surface beneath the damaged car's hood--the engine block is a good choice. Do not connect the black cable to the negative terminal of the dead battery because it could spark a spark that ignites the gasoline in the engine bay.
After the cables have been connected, you should begin the car and let it run for approximately five minutes. Then, disconnect them in reverse. The battery in your Saab 9-3 is recharged as you drive. It will take a while for it to return to its original state. It is a good idea to purchase a spare key fob as soon as you can, because replacing the only working one requires the installation of a new computer module and a special program to convince it that your lost keys are not trying to steal the car.
Replacement Case
Many Saab owners only have one key for their car and if they lose that it's going to cost them. The reason for this is that it's costly to buy a new 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 disaster it is recommended to have an extra key. Don't purchase a used key even if it's "new." Keys that are claimed to be new purchased from third-party sellers won't be effective and are almost guaranteed to fail in the most critical moment.
The dealer will charge you top dollar if you have only one working key. However, we can reset and re-program the computer's EEPROM to accept the new key, without replacing the whole system. That can save you a lot of money. It's cheaper to do this instead of waiting until you lose your only key.