What is the reason for the dashboard warning of central locking failure in Audi A6?

[AsherFitz]

Central locking malfunction leading to doors not locking is usually caused by faults in the door lock actuator or door lock controller. If this occurs, it is recommended that the owner promptly visit a repair shop for inspection. Fault information can be quickly detected using diagnostic equipment. Below are relevant details: 1. Common faults: Common central locking faults in vehicles generally include aging motors requiring replacement, blown fuses in the switch circuit needing replacement, central locking unit failure requiring replacement, and loosened linkage rods of the main motor needing tightening. For example, faults like blown fuses can only be directly replaced unless they are mechanical in nature and can be repaired. 2. Vehicle central locking: Vehicle central locking refers to the switch located next to the driver's seat, which can simultaneously control the closing and opening of all vehicle doors. This 'central door locking' control device was first installed in cars as early as the 1970s and has become relatively widespread after more than two decades. The in-car central locking switch is usually installed on the door or the central console.