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How to Programming a BMW Key Fob In the constantly evolving technological world of automotive technology, it's important for mechanics and locksmiths to stay educated on key programming and duplicate. This will help them deal with complex issues, such as BMW key fob programming. To program a new key, begin by inserting the working key into the ignition and then turning it to position 1. The dash and accessory lights should turn on. What is EEPROM? More Help is a nonvolatile memory that can be erased or changed. It can be used to store many things, such as serial numbers and other unique information, in almost every device that is connected to Ethernet. It is the chip that is found in printers, charge cards, and even blood sugar monitors. It can also be used to store data sequences that regulate the microcontrollers' operation and also to allow for recovering from power-on reset conditions. The fundamental EEPROM chip is comprised of two field effect transistors. One of them is floating gate, while the other is a control gate. When the device is powered up the electrons are released. They can be trapped either in a zero state or a 1 state depending on the voltage applied. The EEPROM can be read by determining the state of these transistors. If the EEPROM is in the “0” state, it has no value. When the EEPROM state is “1” it has a 1 value. Between these states, no information is stored, however it is still possible to write. The EEPROM can be erased by applying a specific voltage to the gate for a short period of time. The EEPROM has the advantage that it can be erased and written to with no external circuitry. This makes it a great choice in systems where memory needs to be regularly updated, such as remote keyless system microcontrollers. There are various types of memory chips which have similar functionality but are better suited to long-term storage. Modern flash memory chips are a common feature in digital cameras and computers. They are commonly used to store multimedia files intended for both short-term and long-term storage and retrieval. Nevertheless, they are not considered to be true EEPROMs, and their core functions differ from those of true EEPROMs. They are still used, but due to their versatility and ability to store a minimal amount of data in a tiny space. What is OBDII? In the past the majority of automobile manufacturers had their own methods to diagnose problems with their vehicles. In 1996, the government required that all cars have a standardized system to read diagnostic codes. This new system, which is called OBD-II is based on the same port and diagnostic code system for all makes and models of automobiles sold in the US. This means that any mechanic is able to easily diagnose a problem in your car by plugging in the tool that is specifically designed for. The OBD-II system detects a range of faults in the engine and other components of the vehicle by using a standard diagnostic connector. The information is stored in the car's computer for later analysis. This allows the system to identify and repair faults before they cause major damage. The mechanic can connect an OBD-II scan tool to the port and it will display error codes and tell them where they came from. Scanners have a higher computing capacity than code-readers and are able to read a greater variety of error codes. They also display live data graphs and record data for later analysis. Some tools are capable of performing more complex functions such as changing the programming of an ECU or providing performance-enhancing options. These higher-end tools are typically employed by professionals in the field of automotive mechanics and are more expensive than basic code scanners. When connecting a scanner to the OBD-II port it will automatically recognize what protocol it is using, and communicate with the vehicle by using the appropriate pins. There are many protocols. The most well-known are SAE J1850 (KWP2000), used by Ford and some GM cars ISO 14230-4, which is used in various European and Asian vehicles, and CAN. Certain scan tools will tell you exactly what the code is referring to. Others will provide the code, and you'll need to conduct some research on the internet to determine what it means. What is CAS Unit? The CAS module is an BMW module that controls the antitheft system of the car. The system works by reading the coded signal from the key fob and then verifying it with the CAS module. The CAS module will send an enable signal to the engine control unit if the signal is valid. If the signal is invalid the engine will not begin. BMW CAS module malfunctions can result in a variety of symptoms like key fob malfunctions, alarm activation, central locking, and warning lights on the dashboard. If you notice any of these symptoms, you should have the CAS Module inspected as soon as you can by a professional. The CAS system makes use of the BMW ICOM VCDS to communicate with the engine and other systems in the vehicle. The VCDS connects to the CAS using a cable that is specially designed with a DIN connector at the end. The VCDS can perform a variety of functions that include showing error codes and changing the timing of the ignition. It also has a variety of security features that shield the vehicle from theft. BMW vehicles come with the CAS key module addition to the ICOM VCDS. The CAS module does not require batteries and is powered by the ignition coil. A transponder chip is embedded in the key to transmit the coded signal to the CAS module. The signal is transmitted through a coil antenna (loop) at the ignition lock. The CAS state logic is implemented by the CasSystem class. You should create one instance of this class on every device that requires information from the CAS. Making multiple instances of this class may result in undesired behavior. CasSystem also manages alert messages in addition to providing state data. In order to do this it generates a ca_activate_alert topic that requires event information in the form of an object with the key and priority properties. This topic specifies the ID and optionally the suffix of the alert you want to activate, along with the priority level. Once you've activated an alert, the CasSystem will display an alert message on the cas_alert_displayed and ca_alert_hidden event bus topics (defined by the CasEvents interface). It will also subscribe to the cas_master_warning_active and cas_master_caution_active topics to consume their statuses. How do I program a BMW key BMW offers keyless entry for drivers in the Murrieta region. This feature makes it possible for you to lock and unlock your car without using a physical key. However the keyless entry feature can only be activated if the key fob is programmed to the vehicle. You'll need to follow some easy steps. This process differs slightly depending on whether you wish to connect a brand new key fob to your existing BMW or are starting from scratch and don't have a functioning key. The first step is to take the working key fob and the ones you'd like to program inside your vehicle, making sure that all windows and doors are shut. Insert the working key into the ignition, turning it to the first position and quickly returning five times (do not start the engine). Take the key out by turning it backwards. With the key fob still in your pocket, hold the unlock button while you press the lock button (the BMW logo) three times in a row. Release the unlock button and the door locks will be locked and unlocked themselves. Repeat this process to program each key fob. Connecting your smartphone to your vehicle via Bluetooth is the last step. Launch the BMW Connected app and log in. The BMW Digital Key setup button will be displayed. This will enable you to use the key using the Digital Wallet App. Once you've completed the steps, you'll be able to ensure that your BMW key fobs are ready to be used by other members of your family and your friends during their Corona commutes. For those who require assistance, our service department is always available to provide more tips and tricks for the most successful BMW experience! The battery replacement in your BMW key fob is another task you may have to perform at times. This is a simple job that you can accomplish at home. To change the battery all you need to do is take off the cover for your key fob and then carefully removing the old battery, and then replace it with a fresh CR2032. This will allow you to get back your keys and put you back to your destination in the shortest amount of time!