Pop up headlight help!!!
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Joined: Jul 2014
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From: Brevard F.L
Pop up headlight help!!!
Ok so here is the issue. I have a 99 C5. Over the past few months the headlights worked great. One went up a tad slower than the other one and the same when going down. But worked none the less. This morning I went out there and lights turned on and went up no issues. Got to work and they wouldn't go down. Everything else on the steering wheel controls worked the cruise control and all that. I checked the fuses the 3 & 4 for the motors looked great. I don't think both motors would go out together so I need ideas! I manually put them down and they do nothing now. What could it be?? Headlights still work.
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Joined: Jul 2014
Posts: 83
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From: Brevard F.L
While it could be the headlight switch (often referred to as the multi function stalk or MFS) it most likely is the headlight control module.
The HCM is well known for having the case that encloses the electronics split open and let water inside.
HCM is located on the passenger side on the headlight bracket below the headlight. Looks like this:
http://www.ecklerscorvette.com/corve...FQNrfgodJv0O1g
There was a recent thread by a member that had successfully repaired his but most of them are not repairable once the electronics gets wet. Try searching for that thread. You have to remove the HCM to see the back side which is what usually splits open.
If the HCM is still good then the MFS is the other possible cause. It also is a well known C5 failure point. Try this thread for info on the MFS:
https://www.corvetteforum.com/forums...f-replace.html
Usually when the MFS fails there are other lights that don't operate correctly such as the tail light, dash lights, or signal lights but not always.
The HCM is well known for having the case that encloses the electronics split open and let water inside.
HCM is located on the passenger side on the headlight bracket below the headlight. Looks like this:
http://www.ecklerscorvette.com/corve...FQNrfgodJv0O1g
There was a recent thread by a member that had successfully repaired his but most of them are not repairable once the electronics gets wet. Try searching for that thread. You have to remove the HCM to see the back side which is what usually splits open.
If the HCM is still good then the MFS is the other possible cause. It also is a well known C5 failure point. Try this thread for info on the MFS:
https://www.corvetteforum.com/forums...f-replace.html
Usually when the MFS fails there are other lights that don't operate correctly such as the tail light, dash lights, or signal lights but not always.
Thread Starter
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Joined: Jul 2014
Posts: 83
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From: Brevard F.L
You sir are a saint!!!! I took off the HCM And a few of the plugs were super crosive so I went and got cleaner and cleaned them up plugged it all back in and truth be told the head lights went into the down position. Thank you so much for the info 8VETTE7
