Hello, the turn signals on my 2000 S40 are not working 100%. Does anyone know where the flasher is located? I think thats the problem, as they will work at times, and not at others.
Thank you.

 

Hazard switch is the relay.

 

For S40/V40: The turn signal and hazard relay switch is next to the interior fuse box (driver's side, under the dash on left). The hazard button is just a switch and it's not easy to remove and replace and you may damage dash stuff trying to get it out. Trust me, don't replace the hazard button if you don't have to.

So then, if your turn signals AND (operative word AND) hazards are not working or working intermittently, you should replace the flasher relay. To do so, the unit is located next the fuse box. If your car still has the upholstered panel above the pedals, it comes out with 2 easy clips that you pull down and pop out. Next to the fuse box to the left, the flasher unit in my V40 had a white housing that I think serves as a tool to help you insert a new flasher. The white housing can be pried off and kept for the new unit. You have to either wriggle with some effort, or use vise grips to pull the bad unit. I used vise grips lightly clamped to wriggle it out.

I'm on West Coast of U.S. and found the part at NAPA for $12. That part number is 111953227D. I was seeing prices for part No. MB953383 and 30870939 anywhere from $15 to $52!

I've read other posts where just taking out the relay and cleaning the contacts worked, but it didn't for me (they would work a few times and then fail again... and then work again and then not work again...) so you might as well just spend the $12 and get a new one that will last another 140,000 miles. I don't know why this post has these dumb hyperlinks, it's my first day...