Turn Signal Problems
Former Vendor
Joined: Dec 2006
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From: The AutoBuffs Army is unmatched in the Custom world! www.autobuffs.net
S. Jersey Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '08-'09-'10
Cruise-In IX Veteran
A little more information would be helpful!
Are your running lights on?
Do you get the rappid blink when you turn them on?
Are your running lights on?
Do you get the rappid blink when you turn them on?
Le Mans Master
Joined: Oct 2004
Posts: 9,369
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From: Zephyrhills, Florida
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13
Tech Contributor
Joined: Dec 2003
Posts: 19,384
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
with the suggestionsFrom what you say its probably one of two things - either the hazard warning flasher or the turn signal switch itself. The fact that they start to work and then stop makes me think it may be the turn switch on the stalk.
When they stop working leave the turn selected and try recycling the 4 way flasher a few times quite firmly. If that clears the problem there's your culprit. If not its probably the T/S switch. You could try some electrical cleaner squirted into the switch itself on the stalk. Thats been known to fix the problem. If not, then you'll need to change out the switch. There are How Tos on the forum.
Burning Brakes
Joined: Sep 2007
Posts: 945
Likes: 1
From: Tigertown Ohio
with the suggestionsFrom what you say its probably one of two things - either the hazard warning flasher or the turn signal switch itself. The fact that they start to work and then stop makes me think it may be the turn switch on the stalk.
When they stop working leave the turn selected and try recycling the 4 way flasher a few times quite firmly. If that clears the problem there's your culprit. If not its probably the T/S switch. You could try some electrical cleaner squirted into the switch itself on the stalk. Thats been known to fix the problem. If not, then you'll need to change out the switch. There are How Tos on the forum.
Not just on Vettes either.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Instructor
Joined: Mar 2003
Posts: 211
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From: Noblesville IN
Been there done that
When mine went out, it would work on cool non-humid days, but when it was warn, it was flaky. Next time it doesn't work, hit your hazard button and see if it comes back on. If it does, it is your flasher. And it will get worse.
The flasher is behind the hazard button and the dealership will charge you about $350 to change it. I know because I had my done before I read about the fix on the forum.
If I had it to do again I would have attempted to fix it myself.
Good Luck!!!
The flasher is behind the hazard button and the dealership will charge you about $350 to change it. I know because I had my done before I read about the fix on the forum.
If I had it to do again I would have attempted to fix it myself.Good Luck!!!
Cherish your Hopes...
Joined: Feb 2002
Posts: 13,072
Likes: 236
From: West Palm Beach FL
Cruise-In VII Veteran
St. Jude Donor '05-'06-'07
...I replaced my flasher in StuZ06 and Voila! Ive Got Blinkers 
...note: mine worked intermittantly and when I pressed the flasher button then the blinker would work...
...note: mine worked intermittantly and when I pressed the flasher button then the blinker would work...
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Burning Brakes
Joined: Sep 2007
Posts: 945
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From: Tigertown Ohio
Tech Contributor
Joined: Dec 2003
Posts: 19,384
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Le Mans Master
Joined: Oct 2007
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From: Kelso Washington
St. Jude Donor '09, '13, '15
If it is your hazard/flasher unit (most likely), and you are fair with fixing things, there are good instructions here on how to remove the center console and radio etc to get to the unit.
I've said this before, but once I got to mine, I ended up putting the old switch back in place just to hold the button and keep it flush with the dash....but.....there was enough wire harness that I routed it down to my driver-side footwell and it peeks out from behind the plastic panel that meets the carpet. SO.....WHEN it goes bad again, all I have to do is snap off the unit and snap a new one on. No more tearing the dash apart.
I've said this before, but once I got to mine, I ended up putting the old switch back in place just to hold the button and keep it flush with the dash....but.....there was enough wire harness that I routed it down to my driver-side footwell and it peeks out from behind the plastic panel that meets the carpet. SO.....WHEN it goes bad again, all I have to do is snap off the unit and snap a new one on. No more tearing the dash apart.
Burning Brakes
Joined: Oct 2003
Posts: 1,106
Likes: 1
From: Foresters Falls(near Ottawa) Ont
I mentioned this once before on a thread like this, my signals and brake light went intermittent while on a cruise. I cleaned up the grounds under the hood, one each side, and the one rear ground.
I've had no problem since then. Maybe a coincidence?
RonJ ...
I've had no problem since then. Maybe a coincidence?
RonJ ...
Night Owl for life
Joined: Nov 2003
Posts: 24,699
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From: Bugs Bunny should'a made a left turn here
don't bother changing the flasher for another factory flasher that will fail.
get the LED flasher harness with an electronic flasher and you'll never have this problem again.
get the LED flasher harness with an electronic flasher and you'll never have this problem again.
Melting Slicks
Joined: Nov 2006
Posts: 2,431
Likes: 3
From: Iowa City Iowa
It worked for me
Try spraying an electronic contact cleaner ( be sure you use PLASTIC SAFE) directly into the space between the flasher switch and it's housing. Exersize the switch 20 times or so and it'll work fine. Mine started acting up 3 years ago and I've had to do this twice, takes all of a minute. Sure beats an hour or more of my time tearing the old switch out or paying $300 to a dealer. Especially when the "new" switch will probably fail AGAIN!!! Ron
Race Director
Joined: Jul 2004
Posts: 16,795
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From: Lake Havasu City, AZ
Power for your turn signals are routed through the hazard flasher.
Intermittient failure is a frequent problem in the C5.
you can take out the dash to fix it a la the dealership and then worry about squeaks and rattles or you can do it by removing the radio using a technique posted by a CF member. It is an easier, quicker approach that avoids the squeak/rattle issue associated with dash removal.
Here is his link..
http://myweb.cableone.net/kd5fx/HSwitch/HSwitch.htm
Intermittient failure is a frequent problem in the C5.
you can take out the dash to fix it a la the dealership and then worry about squeaks and rattles or you can do it by removing the radio using a technique posted by a CF member. It is an easier, quicker approach that avoids the squeak/rattle issue associated with dash removal.
Here is his link..
http://myweb.cableone.net/kd5fx/HSwitch/HSwitch.htm
Advanced
Joined: Oct 2007
Posts: 72
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From: Willis Texas
I had this problem and bought the hazard switch for $42 and then got intimidated by the install and did not do it. A member here named Richard makes a wiring harness for hyperblink of LED tail lights that I used to fix my turn signals problem and I have the stock lights. His harness goes right under the knee bolster, so 4 torx screws and 30 minutes later I was in business. In the last six weeks no problems. Just a quick plug and go. Contact Richard here wingwaxers@earthlink.net I think the price was $49 and well worth the easier install.
Last edited by austinmc; Jan 5, 2008 at 09:48 AM.
Drifting
Joined: Feb 2004
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From: Las Vegas Nevada
Le Mans Master
Joined: Oct 2007
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From: Kelso Washington
St. Jude Donor '09, '13, '15
Yes, try the "cleaner" method first by all means. If it works, great. If not, the console access thing isn't that tough to do as opposed to removing the dash. When I pulled mine apart, I learned a lot about my car though.....that is always worth it. Found some "extra" electronics too left over from some accessory that apparently was removed before sale to me.
Or the LED switchover sounds good.
Your choice.
Or the LED switchover sounds good.
Your choice.
