HUD not lighting up?
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Joined: Jan 2016
Posts: 50
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From: Rochester NY
HUD not lighting up?
So I recently bought a C5 and I am just getting around to checking out what's wrong with the HUD. I just assumed it was the "falling" problem, so I removed it today. Mechanically, it looks fine. I hooked it back up, and the adjustment motor does work, and the mirror does move. But I can't see any light coming out of it.
Do I just have a bad unit and need a new one? I'd hate to shell out the cash for another one just to hook it up and not work. Is there any way to bench test it to make it light up at all?
Do I just have a bad unit and need a new one? I'd hate to shell out the cash for another one just to hook it up and not work. Is there any way to bench test it to make it light up at all?
Pro
Joined: Aug 2014
Posts: 508
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From: Oscoda Michigan
I am also interested in gaining more info on this system. I use mine at night or in conditions of low light and love the fact I do not have to remove my eyes from the road to see how fast I am traveling. Mike
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Joined: Jan 2016
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From: Rochester NY
Yup, that's how I knew something was wrong in the first place - when I couldn't see it from the driver's seat.
So, after I removed it, and verified that the pivot pin isn't broken, I hooked it back up, and looked directly at the LCD screen (since it has to be plugged in, I had to stand outside the car and look through the windshield to get the right angle).
So, after I removed it, and verified that the pivot pin isn't broken, I hooked it back up, and looked directly at the LCD screen (since it has to be plugged in, I had to stand outside the car and look through the windshield to get the right angle).
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Here is the schematic, there are no connector views unfortunately.
https://www.dropbox.com/s/vx8p5eoshc...matic.pdf?dl=0
Mr. Sam
https://www.dropbox.com/s/vx8p5eoshc...matic.pdf?dl=0
Mr. Sam
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Joined: Jan 2016
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From: Rochester NY
I bought another HUD and hooked it up - no dice. Mirror still moves fine, but no lights.
Anyone that says removing the dash is easy is a liar. Maybe if you are comparing it to a college thermodynamics exam...
Anyone that says removing the dash is easy is a liar. Maybe if you are comparing it to a college thermodynamics exam...
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Joined: Feb 2018
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Im narrowing down this issue to something happening to either wires connection or bOard from removing the cluster or the HUD unit itself it stayed upright the whole time it was removed though both the HUD and the HUD controls illuminatrd before so this is very frustrating!
Last edited by Y-bodluvr; May 18, 2019 at 11:11 AM.