My load cover (211 320 cdi Avantgarde - 2004) also is reluctant. A while ago, it went through a period of not retracting for about 25% of the time. More recently it's worked every time but two days ago (aargh!) it failed to rise. It was only just the once and since then all is OK.
I put this down to the car having some sort of personality and just wanting to show who's the real boss now and again.
I think there's been a few posts about this in the past but I can't recollect any solutions. Certainly mine's not the same as yours which seems to have stopped completely.
I wonder if the electrical contacts on the tailgate are the culprits. Maybe they just need a good clean?
Perhaps someone who's cracked this will let us know.
ACMS Mercedes Ltd is an independent Mercedes-Benz service specialist based in Walsall. The company provides high levels of customer service and quality workmanship, at competitive prices. Call Mark on 01922 634666 or 07530 456000
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