That's really annoying...
I had a similar problem with a VW Caddy 2009 model.
The pedal was defect three times because of snow and ice.
Every time I sat me in the car in winter, I had snow on my boots.
I tried to get rid of the snow as good as possible, but there was some snow always fell of my boots and collected around the pedal.
After a while the pedal got stuck and stopped working.
That was not funny while driving down or up a hill, and no matter what I did with the pedal, I couldn't control the engine speed anymore.
So electronic accelerator pedals can have a weak point in cold weather, I guess!
I had a similar problem with a VW Caddy 2009 model.
The pedal was defect three times because of snow and ice.
Every time I sat me in the car in winter, I had snow on my boots.
I tried to get rid of the snow as good as possible, but there was some snow always fell of my boots and collected around the pedal.
After a while the pedal got stuck and stopped working.
That was not funny while driving down or up a hill, and no matter what I did with the pedal, I couldn't control the engine speed anymore.
So electronic accelerator pedals can have a weak point in cold weather, I guess!