Mailorder wrote:I can pull the passenger side up, but it'll always droop back down inch by inch. The driver's side window is about the same, but droops down to halfway position a bit quicker.
On our old E420, we purchased 2 large {4-6 inch} suction cups and pushed window into up position and placed the suction cups on inside of glass low on window so they rested on windowsill to hold glass up until we could get appointment at dealer to replace regulator. You could also remove door panel, push glass up and attach small vice grip to regulators to prevent glass from sliding down until proper repair is completed.