What Causes the Failure of Passat's Keyless Entry Function?
1 Answers
Passat's keyless entry function failure reasons: key fob battery dead; car battery dead; sensor module malfunction; nearby interference sources. In such cases, regardless of subsequent troubleshooting or repairs, the first step is to use the spare mechanical key to unlock the car door. Additional Information: 1. Keyless Entry System: The car keyless entry system, abbreviated as PKE (PASSIVE-KEYLESS-ENTER), utilizes the world's most advanced RFID wireless radio frequency technology and the most sophisticated vehicle identity coding recognition system. It pioneers the development of compact, low-power RF antenna solutions and successfully integrates remote control systems with keyless systems, maintaining traditional vehicle circuit protection. This achieves a true dual RF system with double anti-theft protection, providing maximum convenience and security for car owners. The "car keyless system" is not a traditional key but a smart key or intelligent key. 2. Keyless Entry Principle: Each ignition key contains a chip with a unique fixed ID. The car can only start if the key chip's ID matches the engine's ID. If they do not match, the engine will not start. When the owner turns the key to start the vehicle, the base station emits a low-frequency signal to initiate the authentication process. The key transponder's operating energy is supplied by the base station's low-frequency signal. During authentication, the transponder inside the key first sends its own ID number. After verification by the base station chip, the base station sends a string of random numbers and a MAC address, to which the transponder responds. To enhance security, each transmitted signal consists of encrypted data.
