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How to Programming a BMW Key Fob It's vital that mechanics and locksmiths remain current with the latest technologies in automotive technology. This includes key duplication and programming. This will help them tackle complex issues like BMW key fob programing. To program a new key begin by inserting the working key into the ignition, then turning it to position 1. The dash and accessory lights should come on. What is EEPROM? The EEPROM chip is a non-volatile memory that can be erased or changed. It can be used to store many things, including serial numbers as well as unique data in virtually every device that is connected to Ethernet. It is the chip used in printers, charge cards as well as blood sugar monitors. It can also be used to store data sequences that regulate microcontrollers' operations, as well as to provide a means of recovering from power-on reset conditions. The fundamental EEPROM chip is comprised of two field effect transistors. One of them is floating gates, and the other is a control gate. When the device is turned on the electrons are released and may be held in a 0 state or a 1 state depending on the voltage applied. The EEPROM can be read by monitoring the state of these transistors. If the EEPROM is in the “0” state, it has no value. If the EEPROM is in the “1” state, it has a value of 1. In between these states, no data is saved, however, it can still be written. The EEPROM can also be erased by applying a certain voltage to the gate for a brief period of time. The benefit of EEPROM is that it can be erased and written into without the need for any external circuitry. This makes it extremely useful for systems that needs to be regularly updated for example, remote keyless system microcontrollers. There are other types of memory chips which provide similar functionality, but are better suited to long-term storage. Modern flash memory chips, like, are very popular and are found in computers and digital cameras. They are commonly used to store multimedia files for both long-term and short-term storage and retrieval. However, they aren't considered to be EEPROMs and their primary functions differ from those of genuine EEPROMs. However, EEPROMs continue to be extensively used due to their versatility, and their capacity to store small amounts of data in a limited space. What is OBDII? Prior to recently, the majority of car manufacturers used their own diagnostic systems to identify vehicle problems. Then in 1996, the government mandated that all cars use an uniform system to read diagnostic codes. This new system called OBD-II utilizes the same diagnostic code and port system for all makes and models that are sold in the US. This means that if there is problems with your car it will be simple for any mechanic to determine what the issue is by plugging in a specific tool. The OBD-II system reads a wide range of faults in the engine as well as other parts of the vehicle using an ordinary diagnostic connector. The information is stored in the car's computer system for later analysis. This lets the system detect and repair faults before they cause significant damage. The mechanic can connect an OBD-II scan tool to the port, which will display the error codes and indicate where they originated. Scan tools have more computing capacity than code readers and detect more types of error codes. They can also display live data graphs and store data for later analysis. Some tools are capable performing advanced functions, such as reprogramming an ECU or supplying options to improve performance. browse around here are employed by professional auto technicians and are usually more expensive than scanners for simple tasks. When you connect a scanner tool to an OBD-II connector, it will recognize the protocol and communicate with the vehicle using the correct pins. There are numerous protocols, but the most common ones are SAE J1850 that is used in Ford and a few GM vehicles, ISO 14230-4 (KWP2000) and ISO 14230-4 (KWP2000), which is used in a number of European or Asian vehicles, and CAN, which is used on the majority of American-made cars. Some scan tools will even explain what the code means, whereas others will only give you the code, and require some internet research to find out what it means. What is a CAS unit? The CAS module is a BMW module that manages the antitheft system of the vehicle. The system works by reading an encoded signal from the key fob and verifying it with the CAS module. If the signal is valid it is then the CAS module will send an enable signal to the engine control unit. If the signal is invalid, the engine will not begin. A BMW CAS module malfunction could cause a variety of symptoms, such as key fob not working problems, alarm activation issues, central locking issues, and warning lights on the dashboard. If you're experiencing any of these symptoms, you need to have the CAS module inspected by a professional as soon as possible. The CAS system uses 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 an DIN connector at the end. The VCDS can perform a number of functions, like showing error codes or altering the timing of the ignition. It also comes with a variety of security features that protect the car from theft. BMW automobiles are equipped with an CAS key module in addition to the ICOM VCDS. The CAS module does not use batteries and is powered by the ignition coil. The key is encased with a transponder chip that transmits the coded signal. The signal is transmitted via an antenna loop (coil) at the lock for ignition. The CAS state logic is implemented in the CasSystem class. You must create one instance of this class on every instrument that requires information from CAS. Multiple instances of this class can result in undesirable behavior. CasSystem also manages alert messages, in addition to providing state information. In order to do this it generates a ca_activate_alert topic that requires event data in the form of an object that has the key and priority properties. This topic specifies the ID of the alert you wish to activate and the priority level. Once you've activated an alert and the CasSystem will display an alert on the cas_alert_displayed and cas_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 you program the BMW Key BMW offers drivers in the Murrieta area keyless entry, an easy feature that allows you to lock and unlock your car without having to use the physical key. However, this keyless entry system can only be activated if the key fob is programmed to the vehicle. To do this, you'll need follow a few simple steps. The procedure varies slightly based on whether you're looking to pair a new key fob to your existing BMW or you are beginning from scratch and don't have a functioning key. The first step is to insert the working key fob into your vehicle and then insert the one you'd like to program. Make sure all the windows and doors are closed. Insert the working key in the ignition and turn it five times to position 1 and then back. Do not start the vehicle. Turn the key back again and remove it. With the key fob in your pocket hold the unlock button while you press the lock button (the BMW logo) three times fast. Release the unlock button and the door locks will lock and unlock themselves. Repeat this procedure for each additional key fob. Connecting your smartphone to your car using Bluetooth is the last step. Log in to the BMW Connected application. The BMW Digital Key setup button will be displayed. This will activate the key in your smartphone and allow you to use it using the Digital Wallet app. After you've completed these steps, the BMW key fobs can then be used by other members of your Corona family or friends. For drivers who need help our service department is always available to offer more advice and tricks to ensure a successful BMW experience! The battery replacement in your BMW key fob is another task you may have to do on occasion. Luckily, this is an simple job that can be accomplished at home. To change the battery all you need to do is remove the cover on your key fob, carefully take off the battery that was in place, and then replace it with a new CR2032. This will give you back your keys and get you to your destination in no time!