Go Back   Corvette Forum > C6 Corvette, 2005 - 2013 > C6 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C6 Tech/Performance
LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
21st Century Muscle Cars

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 11-24-2011, 01:06 AM   #1
hippypink
Junior Member
 
Member Since: Dec 2010
Default Low beams randomly not working

First question: This is actually in regards to a Z06, but not sure if I should post here, or Z06 forum because it probably applies to C6's in general. Please move this to the correct forum if needed.

It's happened a couple times now where I am driving at night, stop the car for a minute (off), and then when I go to drive again, the headlights do not come on. I try the different settings (auto, on, etc..) to get the low beams on, but the only thing that I can get to work is the high beams.

When I park it, and go out the next day, they are working fine again.

Any ideas?
hippypink is offline   Reply With Quote
Old 11-24-2011, 04:50 AM   #2
Knob Jockey
CF Senior Member
St. Jude Donor '11-'12-'13-'14
Support Corvetteforum!
 
Knob Jockey's Avatar
 
Member Since: Oct 2007
Location: Edgewood Washington
Default

In the fuse box in the engine compartment there is a Mini-relay for the Low Beams (#47).

You could test it by swapping it with Mini-relay #45 (Wipers on/off).

The Parking Lights use a different relay but if they are failing along with the Low Beams, then the problem could be the stalk switch.
Knob Jockey is offline   Reply With Quote
Old 11-24-2011, 11:04 AM   #3
torquetube
CF Senior Member
 
Member Since: Dec 2004
Location: Bay Area CA
Default

Quote:
Originally Posted by hippypink View Post
First question: This is actually in regards to a Z06, but not sure if I should post here, or Z06 forum because it probably applies to C6's in general. Please move this to the correct forum if needed.

It's happened a couple times now where I am driving at night, stop the car for a minute (off), and then when I go to drive again, the headlights do not come on. I try the different settings (auto, on, etc..) to get the low beams on, but the only thing that I can get to work is the high beams.

When I park it, and go out the next day, they are working fine again.

Any ideas?
You said that the low beams work again the next day. This sounds suspiciously like the same problem that several of us have experienced: the low beams quit working after the engine warms up.

If your problem is heat-related, the culprit is probably the backplane of the fusebox itself. A broken trace in circuit 1970, deep inside the assembly, goes open-circuit as it heats up. In my case it was dangerous, because the lamps would suddenly quit while driving home at night!

But first rule out the light switch itself. Cover up the light sensor on the dash or just wait until it's dark and twist the low-beam switch from Auto to Off. If the DIC says "Headlights Suggested" then you know the computer is receiving the signal from the switch.

If the switch is okay, you can isolate the problem pretty quickly with a multimeter. I'd start at the relay. Is it getting the signal? If not, go backwards toward the computer. If so, it's either the relay itself, or between the relay and the headlamps.

If your problem turns out to be the backplane, I strongly encourage you to report it to the NHTSA, because this is starting to look like a trend.

I describe it in more detail here: http://forums.corvetteforum.com/1577560168-post17.html

Last edited by torquetube; 11-24-2011 at 11:07 AM.
torquetube is offline   Reply With Quote
Old 11-26-2011, 04:38 PM   #4
hippypink
Junior Member
 
Member Since: Dec 2010
Default Will check it out

Quote:
Originally Posted by torquetube View Post
You said that the low beams work again the next day. This sounds suspiciously like the same problem that several of us have experienced: the low beams quit working after the engine warms up.

If your problem is heat-related, the culprit is probably the backplane of the fusebox itself. A broken trace in circuit 1970, deep inside the assembly, goes open-circuit as it heats up. In my case it was dangerous, because the lamps would suddenly quit while driving home at night!

But first rule out the light switch itself. Cover up the light sensor on the dash or just wait until it's dark and twist the low-beam switch from Auto to Off. If the DIC says "Headlights Suggested" then you know the computer is receiving the signal from the switch.

If the switch is okay, you can isolate the problem pretty quickly with a multimeter. I'd start at the relay. Is it getting the signal? If not, go backwards toward the computer. If so, it's either the relay itself, or between the relay and the headlamps.

If your problem turns out to be the backplane, I strongly encourage you to report it to the NHTSA, because this is starting to look like a trend.

I describe it in more detail here: http://forums.corvetteforum.com/1577560168-post17.html
Wow! great info. Yes, so far it's only happened after i've driven the car a bit, so sounds like this is probably the problem. Now just have to wait till it happens again to test these.
hippypink is offline   Reply With Quote
Old 01-04-2012, 08:44 PM   #5
corvetteflyer
Junior Member
 
Member Since: Apr 2009
Location: San Jose CA
Default

I have the same symptoms in my 2008 C6. Dealer wants $695 to replace the fuse box. Ouch! I will definitly report it to NHTSA as per TorqueTube's suggestion.

Cheers
corvetteflyer is offline   Reply With Quote
Old 07-03-2012, 04:25 AM   #6
H8VTEC
CF Senior Member
 
H8VTEC's Avatar
 
Member Since: Mar 2011
Location: Alhambra CA
H8VTEC
Send a message via AIM to H8VTEC
Default

I just started getting this problem too! Tonight I was driving then, poof no lights. High beams work, fogs work, etc. I let the car sit for a while and they work again and then poof gone.
H8VTEC is offline   Reply With Quote
Old 06-01-2013, 01:49 AM   #7
hymnatr
CF Senior Member
 
Member Since: Aug 2005
Default

has anyone found out more about this? I'm getting this now on my 05.
hymnatr is offline   Reply With Quote
Old 06-01-2013, 09:43 AM   #8
truckplay
CF Senior Member
 
truckplay's Avatar
 
Member Since: Oct 2010
Location: Sugarhill Ga
Send a message via AIM to truckplay
Default

there is a TSB maybe a recall by now. the relays in the underhood fuse box over heat and folks complain that their lights shut off while driving.
__________________


Tom
truckplay is offline   Reply With Quote
Old 06-01-2013, 09:53 AM   #9
tucn26
CF Senior Member
 
tucn26's Avatar
 
Member Since: Feb 2012
Default

i had the same problem bought a new complete under hood fuse box and fixed it.
tucn26 is offline   Reply With Quote
Old 06-01-2013, 09:53 AM
 
Go Back   Corvette Forum > C6 Corvette, 2005 - 2013 > C6 Tech/Performance
Reload this Page Low beams randomly not working
 
 
 
Reply

Tags
2006, beam, beamz, c4, c6, corvette, corvetteforum, day, fuse, headlights, low, lowbeam, problem, working, z06


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
ACA headlight install --> high beams on when switch is on low beam setting YLO Z06 C5 Tech 8 09-03-2014 09:26 AM
ACA headlight install problem #2 - passenger low beam quit working YLO Z06 C5 Tech 1 07-15-2014 11:11 PM
Auto Low Beam vs. Turning It On Faster than a bullet C6 Corvette General Discussion 3 01-27-2014 01:52 PM
68' headlight electrical problems speedybmc C3 Tech/Performance 4 10-23-2013 01:58 PM
High beam driving lights Sportsdude C5 Tech 24 03-16-2005 10:07 AM


All times are GMT -4. The time now is 04:28 PM.


Emails & Password Backup