fiat punto both wipers stop in middle of winscreen?

Probably the wiper arms have slipped off the rubber connectors on the moving arm. If you open the bonnet you'll see how it works.

Simple to fix just turn the wipers on till the moving arm is in a good position to reattach the wiiper arms (might need a couple of tried) - they them just pop back on. They will slip out again - so I've used "Halfords Metal Cable Ties Large HFX419 " to wrap round the join and through the hole a couple of times. Has worked so far - not idea but seems ok. Here's a link with more permanent fix suggestions.

http://www.diynot.com/forums/viewtopic.php?t=68329

Maz
March 2011