Why doesn't the window roll down when holding the unlock button on the Volkswagen Lamando?
3 Answers
The reason why the window doesn't roll down when holding the unlock button on the Volkswagen Lamando is either the convenience window function is not activated or the one-touch up/down function has failed. Convenience window function not activated: If the convenience window function is not enabled, holding the unlock button won't roll down the window. In this case, you need to access the central control system settings and activate the convenience window function. One-touch up/down function failure: The one-touch key system works by the key emitting a weak radio wave, which is received by the car's antenna. The electronic control unit then identifies the signal code, and the system's actuator (motor or electromagnetic coil) executes the window opening/closing action. If this function fails, maintenance and repair at a 4S shop is required.
I reckon this depends on the trim level first - not all Lamando models come with the long-press window roll-down feature. Base models might not even have this function programmed, just like my 2019 Comfort trim which required a 200+ yuan hidden feature activation. If this function suddenly stops working on a car that originally had it, it's likely due to a low battery causing system glitches - I once encountered this after a two-week business trip, and it was fixed by jump-starting the car and holding the unlock button for about 10 seconds to reset. Another possibility is weak signal from a dying key fob battery - I'd suggest trying a new CR2032 battery first. Also check if all doors are properly closed, a detail many owners overlook. If all else fails, visit the dealership to read the OBD trouble codes - it might be the signal reception module acting up.
As a seasoned Volkswagen enthusiast, I recommend troubleshooting in three steps. First, ensure all four power windows are in initialization mode: Hold the window switch upward for three seconds until it reaches the top, then hold it downward for three seconds until it reaches the bottom. This method resolves 80% of window logic malfunctions. Next, try inserting the mechanical key into the driver's door lock cylinder, turn it to the right and hold for five seconds—a 'click' sound indicates successful reset. Finally, take out the car key, stand within three meters of the vehicle, and simultaneously press the unlock and lock buttons until the hazard lights flash twice. These three techniques usually solve the issue. If the problem persists, inspect the BCM (Body Control Module) power wiring harness, especially the A-pillar connectors which are prone to moisture and oxidation. Last year, I helped a fellow owner with a similar case caused by water intrusion in the connector.
