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Saab Key Programming Saab cars built since about 1994 come with an immobilizer system based on coded keys. In order to add a second key, it requires the purchase of a new transponder as well as special programming. This is usually handled by the dealer using a Tech2 diagnostic tool. This can be expensive. This is why it is important to always keep a spare key in your possession. Transponder key The transponder key is a piece of hardware equipped with an electronic chip. It transmits a signal to the car when it is put into the ignition. The car then checks to see whether the signal matches the one on the key. If the signals match then the car will be able to open and start. This is a great way to stop auto theft and keep your car safe from thieves. Transponder keys are an increasingly popular feature in cars, but you should be aware that they are not as secure as classic keys made of metal. While the metal portion of a traditional key may be cut and copied, a transponder is protected by an electronic chip. This chip contains an unique code that is programmed into a car's computers 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 when it has a chip that is unmodified and programmed to match. The car will not start in the event that the key is not programmed to match. It's essential to ensure that you have an extra key for your Saab. saab 9-3 key www.thekeylab.co.uk is especially true when you live in a rural area, where there are a lot of car thieves. The good thing is that you can obtain a replacement key for your Saab without needing to visit a dealership and pay the hefty prices that they charge. You can get the replacement key on the spot for less than half the price you'd spend at a dealership. Key for Wired Saab cars usually come with two keys when they're new. If you have only one, it's best to acquire 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 will need to be replaced. This can be expensive especially for cars that are used. 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 requires a significant amount of soldering. There's no standard way to go about it, but you need to plan how to route and connect each column and row. For this keyboard, there are 5 rows and 17 columns, which means there will be 22 microcontroller pins and wires to connect. After the columns and rows are soldered, it's the time to connect them to key switches. Solder a diode to each key switch pin. This will protect the pins from current, thus preventing them from being shorted. A diode allows current to only flow in only one direction. It features a visual indicator with a black band that shows the direction in which the current will flow. A few of the tools that are available at auto parts stores — such as the Autel MaxiIM IM608 Pro and IM508 — can aid shop customers or DIY customers in certain cases replace keys in the program and restore lost immobilizer data Sanabria says. 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 The majority of people have a set of jumper cables in their trunk for emergencies however, jumping a battery in newer cars might not be the best choice. These cars have a variety of digital and electronic devices that communicate with each other. A voltage surge when the battery is connected to another could cause damage to the components making your car unusable. Connect the cables to the vehicle operating. Allow it to run for two minutes. 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 an unpainted, clean metal surface beneath the damaged car's hood. The engine block is an excellent choice. Do not connect the black cable to the negative terminal of the dead battery, as it could ignite an ignition source that ignites gasoline in the engine bay. Once the cables are connected, you can start the vehicle you are not using and allow it to run for around five minutes before you disconnect them in reverse order. The battery in your Saab 9-3 will be recharged as you drive. It will take a while for it to drop back down. You should 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 have only one key for their vehicle and if they lose it, it's going to cost them. It's costly to add a key and requires replacing the CIM or TWICE for older models. It's best to have a second key in the event of theft or other disaster and the best option is to purchase an additional key as early as you can. Don't purchase a used key even it's “new.” Keys that are claimed-new from sellers selling aftermarket keys won't work and are likely to fail in the crucial moment. The dealer will charge you top dollar if you only have one working key. However, we can reset and reprogram the computer's EEPROM to accept an alternative key without replacing the whole system. This can save you a significant amount of money. It's also less expensive than waiting until you lose your sole key.