I have this problem as well. I have survived on just taking out the fuse and putting back in. It will work for about a week, and then fail again.

The doors I'm not that bothered about, it's just the trunk. If the closing aid fails, the trunk tends to bounce when you try and close it. You have to mess around with switches in the trunk to turn off the closing aid. Sometimes, when the aid fails, the trunk doesn't close, and the pop out handle stays open.

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Oliver