On March 9, 2026, numerous smart elf #5 owners across various regions reported irregularities in the official application, specifically noting that their Bluetooth keys and remote vehicle control features had ceased to function. Given that certain models are not equipped with traditional physical remote keys, owners who depended on their smartphones for unlocking their vehicles found themselves in a predicament where they "owned a car but were unable to drive it." The root cause of this malfunction was traced back to delays in data synchronization during a server upgrade process. However, the technical team swiftly intervened, conducting emergency debugging measures that ultimately restored the affected functions. In the interim, customer service recommended utilizing NFC card keys as a temporary workaround. Meanwhile, vehicle owners voiced their concerns, urging the manufacturer to provide physical remote keys as a reliable backup option.