While sex dolls are designed for durability and safety, regular maintenance and monitoring are essential to prevent malfunctions that could compromise user experience or safety. Some advanced dolls incorporate sensors and diagnostic features that can detect issues such as internal component failures, fluid leaks, or mechanical wear. These systems can alert users to perform maintenance or repairs before problems escalate. For example, sensors embedded in joints or internal structures can monitor movement smoothness or detect unusual sounds, signaling potential mechanical issues. Regular inspection of electronic components, batteries, and movable parts can help identify early signs of malfunction. Proper cleaning and lubrication are also vital to prevent material degradation and ensure smooth operation. Manufacturers may include troubleshooting guides or remote diagnostics to assist users in resolving common problems. Preventive maintenance enhances the longevity of the doll and ensures it remains safe and functional for continued use. Ultimately, integrating diagnostic features not only safeguards user investment but also promotes a safer, more reliable experience, giving users peace of mind and confidence in their interactions.