How to duplicate a Mercedes car key?
2 Answers
Mercedes car keys can be duplicated at 4S dealerships or auto parts markets, but the prices vary. Although key matching at 4S dealerships is more expensive, the technology is relatively reliable. Here is more information about Mercedes car keys: 1. Many vehicles nowadays are equipped with electronic chip anti-theft technology, which uses two-way communication between the key and the vehicle. Based on whether the verification result of the electronic key ID matches the key ID code in the vehicle's anti-theft system, when the key ID verification is successful, the CAN communication sends a signal to the BCM to allow the engine to start. Only keys with ID codes registered in the BCM and ECM can start the engine. 2. 4S dealerships use specialized diagnostic computers and software to register keys. After initializing all ignition keys, they register the key ID codes step by step. In contrast, auto parts markets might use password decryption methods to copy the key onto a new one, resulting in differences in security levels. 3. For vehicles with smart keys, generally, re-registering the key is sufficient. If the mechanical key has a chip, the 4S dealership needs to replace the steering lock and register the key. Once the key is registered, the lost key becomes invalid and cannot start the vehicle, but the mechanical key can still open the door. For safety reasons, it is recommended to replace all mechanical lock cylinders in the vehicle, so that anyone who finds the key cannot open the door.
I have a deep personal experience with getting a Mercedes car key replacement. Last time, when I accidentally lost the main key, I panicked completely. I immediately rushed to the Mercedes dealership to inquire. The staff asked me to bring all the vehicle documents, such as the vehicle registration and my ID card, and required proof that I was the owner. The whole process was quite time-consuming because the key needed to be reprogrammed. They used specialized computer equipment to connect to the car's system and synchronized the anti-theft chip. It took about two to three hours to complete, and the cost wasn’t cheap either—it cost me over a thousand yuan. According to them, Mercedes keys all have built-in complex chips to prevent duplication and theft, so I suggest everyone keep their spare keys safe to avoid unexpected losses. Additionally, if the key is a smart type, like one with remote unlocking functions, getting a new one can also include checking other vehicle settings to ensure everything is in order.
