rear wiper arm problem

[X5SND]

Originally Posted by imalabil

... I think the pivot gets corroded and the spring force can't be as effective. ...

Bingo.

You can try to work some lubricant into the pivot to try and free it up, but you'll likely be in the same situation not to long after. A couple alternatives would be to either A) get a new arm, and lube it regularly. B) search around here for the thread where a member updated his rear wiper to the all plastic volvo/land rover (IIRC) design. C) Delete it all together....you have two other mirrors to use in the winter.....all the rear wiper does is scratch the glass anyway.