What causes all the windows of the Passat Lingyu to malfunction?
2 Answers
The reason why the one-touch up/down function of the Passat windows fails is likely due to a momentary poor connection or power interruption of related components. Simply resetting the one-touch window function can resolve the issue. Below are the relevant details: Electric window malfunction: If the electric window operation is not smooth, it is mostly because the lubrication in the door's internal lift mechanism is depleted. Remove the inner cover and add lubricant. If the glass does not move at all, it could be a switch failure. In case of a switch failure, replacement is the only solution. If the electronic device does not function, carefully check which fuse is designated for the electric windows. If the switch operation deteriorates and the window does not open smoothly, there is a high possibility of a switch malfunction. Maintenance: Before lubricating the internal mechanical components, first remove the inner cover. Remove the hidden screws and detach the quick-action switch.
I've encountered quite a few cases of complete power window failure in Passat Lingyu models, usually stemming from several common issues. First, check the fuses - they may have blown due to voltage fluctuations or circuit overload. These are located in the cabin fuse box (refer to manual for numbering). Second, inspect the master control switch on the driver's door; worn contacts or water-induced short circuits can disable all windows. Third, motor failure - while four motors failing simultaneously is rare, control unit problems (like loose BCM wiring or software glitches) can be serious. Fourth, wiring issues, especially at door hinge harnesses where aging/breakage causes signal loss. Last time I fixed this, it was just a blown fuse - replacement solved it. Regular inspection of these components is advised to prevent window jams affecting emergency egress. Safety-critical issues should be addressed promptly.
