opmope

Sorry if there are other posts on this topic. Tried a search but did not find the info I was looking for.
2003 C5 with car running and no lights on except daytime running lights the fog light will not work. This is normal. The fog lights only come on when I turn the switch to the first or second position. When doing so my headlights automatically pop up.

How do I use my fog lights when I only turn the switch to the first position? I believe it is when the parking lights are on but I do NOT want the headlights to pop up???
Last year I am positive I could do this. The manual says no but I know for a fact I could use fogs while my headlights were in the down position.
Is there a setting I can change? Thanks in advance for any help.

Drewstein

When the switch is in the first position the fogs will be on with the lights still down...

marshterry

Have you had to replace your headlight motor gears yet? Sometimes that can affect it. Mine do the same thing. No gear noise when I bought the car recently but now the gears are making the jack-hammer noise. A firebird I have had the same symptom and was cured by the replacement of the headlight gears.

DEATHPROOF

The fog light switch above the trunk release has to be on too.

Dave68

Something is wrong. My headlights stay down when my parking lights only are on. Could it be one of the settings in the D.I.C.?

moserbe

That's your daytime running lights. Normal.

opmope

It was my first run after putting the car back on the road when I noticed my problem. My right side motor is jack hammering. I just got the new brass gear from Ecklers last week and will be replacing it soon. Once replaced I will let you all know the out come. Just can't see how that would have anything to do with it?

opmope

No, my headlights pop up what ever the switch position. If what you say is happening , then I would not be posting right now.

Dominic Toretto

Sounds like your gears are wearing as another posted pointed out.

-Alex

ChromeC5

Check the setting on the DRL's in the DIC. See if anyone knows about the Canadian cars on this forum. There was something with Canadian models poping up the headlights automatically (day. Not too sure about it, but after a winter of sitting, your computer may have reset itself.

After a quick check, from another forum:
When Twilight Sentinel is activated, the head lights will automatically turn on when it senses a low level of light and turn off again when the light level is high enough, and turn off automatically after you shutdown. Press the Options button on the right side of the dash and Twilight Sentinel should pop up as one of the first options that you see. It's probably set to "OFF" since you haven't noticed this issue. Besides activating them, there is a 'delay' time setting that determines the amount of time they stay on after you shutdown.

One thing you may notice with the sentinel activated is that the head lights will come on in the garage after you start but not if the parking brake is set. When you release the parking brake, the lights will pop up and on. After I back out into the sun, they turn off a few houses down the street.

Could it be this?

Vetteman Jack

That's the way my '00 worked. The headlights did not pop up unless the switch was in the second position.

Turbopower87

Do you have the twighlight function activitated? Check your settings in the DIC to see if twighlight is on. If it is, try turning it off.

00 Rooster

since bringing my 2000 out of winter storage, this exact same thing has been happening. I installed HID fogs and thought that was the problem but everyone on here said it is more than likely the headlight gears-a few thought it might be the actual headlight switch.

on a side note, when I turned my fogs on (on click up on the switch) yesterday, they worked as they should. just the fogs came on! maybe I just had a gremlin

either live with it or look into the brass headlight gears. good luck

Patman

Mine is a Canadian car and I can turn on just the parking lights and the fogs without having the headlights pop up. I drive like that a lot actually, whenever it's cloudy I will turn on the fogs but not the headlights.

opmope

That is how I drive too. This is why I am asking if the setting needs to be change some where. Maybe lost memory over winter? Have it hooked up to battery tender all winter so never lost power. Twilight is on.

NorCalVette Kid

plus you have to make sure the fog light switch is on.

Here's mine with just the parking lights and fogs...

Jet-Jock

I'd have to review the circuit but in many cases the switch provides the ground so the motors are always hot. Considering that, you may have a ground issue. Check/Open inspect the ground harness connectors and all other grounds.

Do a C5 General search for ground issues. There is a post with excellent pictures of the connector packs. One is just aft of the drivers side headlamp on the frame rail.

Retro99

i know this thread it like 6 months old but instead of starting a new one im gonna ask in here.. i am also wondering the exact same thing as the OP

ive tried just one click on the headlight switch but the fogs DO NOT turn on when i press the fogs button. i tried toggling on and off the twighlight feature testing the "one click up" method in both settings and the fogs still only come on when the headlights pop up in twighlight mode "ON" and the e-brake is down in dim light conditions.
as a matter of fact, my headlight switch seems pointless because the headlights only come on and off with the twighlight setting "ON"
if i turn it "OFF" i cant manually turn my headlights on and off with the switch. the only sign of life ive seen out of the switch is if i leave it two clicks up when driving at night and shut off the car the headlight with turn off but stay in the up position.

is my switch bad? i really want to be able to drive with just the parking lights and fogs

EDIT: 1 more thing.. if i just go one click up during the day, nothing happens.. no lights come on.. only the DRLs are on allll the time while the car is on

blacksedan87

You should be able to turn on just the parking lights (front, rear and side marker lights activated) and the fog lights.

If the headlight door engage with parking lights only - I would consider checking the headlight motors. One of the indicators of a failing gear in a motor is that the door pop up with just parking lights.

Retro99

thats not what i said...

i said i cant turn on my fogs when turning the switch one click, and the parking lights DO NOT come on either.. headlights go up and down in the automatic feature only