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How to Program a MERCEDES Truck Key Our parts department is ready to assist you, whether you require replacement of the battery or your key no longer works. Note that replacement keys can only be ordered and synchronized in person at the dealership. This is to ensure the security and safety of your vehicle. Only you or someone authorized by you may make an appointment for this service. Keys There are some reports that you can reprogram the Mercedes key, but this is not true. Once paired, the key cannot be used with any other vehicle. locksmith truck key of the key has an exclusive profile, which is what the Mercedes system detects and only recognizes. A new key for the Mercedes truck is of a different form and will not be compatible with the system. The dealership must obtain a new, compatible key for your vehicle from Mercedes They don't have keys in stock at the parts department. When picking up your key, you will require the original title, registration, and an official driver's license, passport, or identity card. This helps verify that the person who has the key is the owner and not trying to steal the vehicle. If you wish to have an agent or delegate pick the keys for you, they will require the above documents and an authorization letter signed and that is signed by the owner. The authorized representative or delegate must bring the vehicle into the dealership in order to retrieve the keys. Contact the dealer if you have any questions. They are happy to assist. They will tell you whether they already have the key or if Mercedes needs to order an alternative key that is compatible with the vehicle. Remotes In some MERCEDES vehicles, the remote key features touchscreens that display virtual buttons. When the remote key is touched, infrared signals are sent to devices that control them. The screen can be programmed by using an interface program that is graphically designed on the user's personal computer. The “buttons” on the screen are actually images that represent components of an electronic circuit. These include resistors, capacitors inductors, potentiometers diodes, transistors, integrated circuits and switches. If you put your keys in the boot, it could be difficult to get them out of the truck without damaging the door or the Mercedes-Benz lock cylinder. You could try using a rope that has a slip knot to hook the lock cylinder and then pull it open however, this isn't a sure-fire method. You may need to test it multiple times, or even contact an emergency locksmith or roadside assistance service to assist you open the truck without damaging it. The lower case is equipped with a panel that can be opened in order to store the batteries. The panel is a light brown color with white writing indicating the type of battery that are recommended (UM-4/AAA). It also includes an Plus sign and a Minus sign indents to indicate the direction the spring coils of the battery should be positioned when installing the batteries. Keyless Entry System Using a technology called passive entry and go, SmartKeys with Keyless Go can open or start your vehicle even when the key isn't inside. The SmartKeys come with a transponder that enables the vehicle's computer to recognize a driver by sensing the key's proximity. To activate your vehicle, the key transmits low-frequency signals that are picked up by antennas both inside and outside your door handles. If the transmission matches the ID on the PASE module (Passive Access & Security Electronics) it is authorized by the system that the key to act as a passkey that allows you to operate the vehicle. These systems are designed to prevent “replay attacks” which would allow a hacker to record and replay the control signals and use them to gain access to a vehicle or building. To prevent this an algorithm specifically designed ensures that every signal that is sent by the keyfob will be different from the previous ones. This means that if a burglar captures one of these transmissions, and then attempts to reuse it, the car's PASE module will detect the attempt and deny access.