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Old 10-09-2003, 02:27 PM
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Join Date: Nov 2002
Location: Brockville ON
Posts: 13
Intermittent turn signal failure (1985 380SL)

On occasion I find I have no turn signal response in either direction (no ticking, no flashing indicator lights, no front or rear turn signals). However, if I turn off the ignition and restart the car, usually everything returns to normal. What can cause this and how can I fix it? It doesn't appear to be a faulty turn signal stalk, since if the turn signal doesn't work, no amount of jiggling the stalk will reactivate it...but restarting the car usually does.

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Old 10-09-2003, 05:11 PM
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Join Date: Sep 2001
Location: Austin, TX
Posts: 563
Have you tried jiggling the ignition switch when it happens?
Mike Heath
1988 560SL Black/Palomino
1988 300SEL Black Pearl/Burgandy
1984 500SEC Anthracite Grey/Palomino
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Old 10-09-2003, 06:15 PM
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Join Date: Nov 2002
Location: Brockville ON
Posts: 13
turn signal failure

No, silly me, I haven't tried that, but I shall the next time it happens and let you know. Now that you mention it, it does sound like a faulty ignition switch, doesn't it?
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Old 10-10-2003, 05:11 PM
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Join Date: Nov 2002
Location: Brockville ON
Posts: 13
Well, I tried jiggling the key...and it didn't help. I'm beginning to focus on the relay as the source of the problem.
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Old 10-10-2003, 10:21 PM
Posts: n/a
Try tapping on the red HAZARD switch on the center console; sometimes they have a tendancy to jamb up some how.
Possibly the wire connector to the HAZARD switch may need to be cleaned, this solved my problem with intermittent turn signal problems.
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Old 10-11-2003, 05:53 PM
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Join Date: Feb 2003
Location: SoBo
Posts: 12
Is the turn signal supposed to make a clicking noise? Mine work fine but are silent--just figured it was a design flaw
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Old 10-13-2003, 05:14 PM
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Join Date: May 2003
Location: Belgium
Posts: 37
Yes, I also had the problem: the hazard swith was dirty inside.
I opened the hazard swith box and cleaned it with a contact cleaner and blew it out with an air compressor: the problem whas gone.

Gregory, Belgium, Kortrijk
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