I'm pretty sure I need a new hazard button, but just checking in...

My hazards flash just fine, but my turning signals are starting to stick. They will flash two or three times, then stay on. I have a 1980 300sd. I replaced the fuse but no change. I haven't changed the bulbs... If I slightly depress the hazard button, the flashers will start flashing again.

Also, if I jiggle the cord going to the flasher unit under the dash, the flashers will unstick for a few clicks.

I took the hazard out, tried to clean it, but could not get it open. After I reinstalled it, the flashers worked well for a few turns, then started being balky again.

I am pretty sure that's what I need to do, get a new hazard, but since they're fairly pricey, I thought I'd check in!

Do we think it's the flasher unit under the dash, or the hazard? I would do a test with an electric meter, but as i am a truly stupid girl, there is no way I can figure out how to do that.

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1980 300SD 220,xxx
somewhere, nc

You are correct that the emergency flasher unit is directly related to
the turn signals flashing.

I have never took one apart either, so don't know if it is possible.

But your fiddling with it and getting it to work a little better sounds like it to me.

Hopefully someone else here has more detail.

You should be able to get a used one very reasonably.

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
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03 Ninja 250

The problem will be in the either the hazaerd switch or the relay.

On my car, the problem is in the hazard switch itself. I noticed that the turn signal indicaters in the dash dimmed a bit, then no flashers, when I messed with the hazard switch they will start working again, and the brightness was better.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

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The problem may very well be dirty contacts in the hazard switch. It can be taken apart and cleaned, just be careful to not lose any of the little springs and balls inside. Operate on an old towel to keep pieces from bouncing onto the floor. Usually the brass contacts corrode from age or coffee spills.

The flasher unit itself is AFAIK not repairable -- it is transistorized. If yours is part number 000 821 09 63 or 000 821 10 63 then I have a spare for sale in the parts section of this forum. You can PM me if cleaning the switch doesn't help. The fact that your flasher works at all, even for just a few flashes, suggests that it's not the flasher so do the switch first.

Jeremy

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"Buster" in the '95

Our all-Diesel family
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"Oh lord won't you buy me a Mercedes Benz."
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Coffee spills... THAT's ringing a bell...

I got the hazard open and cleaned it as well as I could. I'll drive this afternoon and see if that did anything.

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1980 300SD 220,xxx
somewhere, nc

Yes, those little springs are tough to find in a short shag carpet. At least that is what I heard

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Here is the same problem from a thread a few days ago.

Flasher/ hazard confusion

It was his hazard switch.

Charlie

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We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Yeah, he had very different symptoms and his model is truly different from mine... I read through a ton of the posts on flashers and half for 116 point to the hazard and half point to the relay.

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1980 300SD 220,xxx
somewhere, nc