How to change wipers on a 2005 volvo v50? - 2005 Volvo V40

The very first thing is have the system scanned for body related fault codes by the dealer.

Here you go :)

Check if fuel lines don't have air bubbles.
If you have diesel, then also check glow plugs and throttle body air flaps.
Sometimes Central Electronic Module causes problems with start and other troubles (airbags, ESP, wipers) and usually you need to clean relays connectors.

Check CEM connectors.
Also sometimes aftermarket HID xenon kits can damage wiper module.

Here's the link for your problem. Hope this helps...http://www.matthewsvolvosite.com/forums/viewtopic.php?f=10&t=20094

CHECK WIPER FUSE AND RELAY.

Belt on the outside, little chain inside. Change every 240k km or 10 years.

Use the right button in the instrument cluster.

yes all modern vehicles have stelite coated valves for unleaded so it will work ok

Yes they have! I have changed many ;)