S40 2001 turn signal/hazzard light problem. I have no turn signals or hazzard lights even though the hazzard switch has been changed. I am at a loss. Any ideas of what could be wrong. Oh, fuses and bulbs ok. thanks for any ideas. Jenny

 

Hi Jenny,

Sorry about the problem.

If the bulbs & fuses are fine, I can only think of a faulty flasher unit, which is usually mounted on the fuse panel. Check with your owner's manual/back of the fuse panel for specific location.

As I'm not privy to S40s, my suggestion may not be accurate and I do not have access to servicing publications for S40. See if you can wait till other S40 drivers reply to you, or better yet, a gentleman by the name of Moderator Tech.


JPN

 

My 2000 S40 has a similair problem. The turn signals started to work on an intermittant basis. I was told it is likely the relay unit, under the dash above the brake pedal, and am going to have it replaced tomorrow. The unit is $41 and the kick plate under the dash has to be removed.
My mechanic suggested I turn on the hazzard flasher to sort of 'bump' the relay a bit when the turn signals don't work, until I get the unit replaced. That seems to help, as when the hazzard lights flash, I know I have turn signals; for a while at least.

 

Usually it is a bad hazard switch. The switch is the turn signal relay.

 

I got my turn signal flasher replaced today, and all is fine. The relay is located under the dash on the S40's, and other models (such as S60, S80,and V70)have it where tech stated it is; hazard switch.

 

On the S40's a bad Hazard swithc will stop them from working as well.

 

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.