Originally Posted by David Burns
You could always try doing a bit of lubing it yourself. If it's still intermittently problematic, you might consider taking it in, as there have been limited reports here of spoiler problems requiring replacement of the spoiler motor.
If you take the cover off on the rear hatch and look at the gears on the spoiler you'll notice it doesn't come from the factory with any grease. Would I consider adding any, not really. Depending on what the gears are made of, you can cause more problems if the wrong lubricant is used.