Persistent HUD display problem
Thread Starter
Drifting
Joined: Jun 2013
Posts: 1,957
Likes: 342
From: Shell Point (Crawfordville) Florida
Persistent HUD display problem
Starting a new thread on my HUD problem.
As I wrote before, my HUD display got progressive dimmer over a period of a few months until it finally went out, with no response to the dimmer switch or page button.
My mirror control works fine and the height of the display is not a problem - there is no display, no visible light inside the unit even in total darkness.
I tried the repair of soldering the 2 leads together to bypass the photoresistor in the unit but that had no effect - still no display.
I got another unit out of a 2004 with only 22,000 miles on it (looks brand new), plugged it in, and that one also has no display at all, mirror motor works fine.
So where do I go from here? Get another HUD unit? Doubt that will help.
And my windshield is clean.
The IPC works fine, fuses 19 and 25 are intact, but can the problem be in the IPC, or do I next replace the HUD controls because maybe the problem lies within the dimmer switch?
Is there any way to test that unit or anything else that can cause the display to slowly dim over time and them go out? Anything inside the IPC I can investigate? And why should that crap out?
I can understand how the dimmer switch could just fail but not understand how it could behave like this, and if I replace that unit and it still doesn't work, then what?
Somebody help me, I really don't want to put my car back together, button it up and just bury the dead HUD display in the dash. I miss that thing.
As I wrote before, my HUD display got progressive dimmer over a period of a few months until it finally went out, with no response to the dimmer switch or page button.
My mirror control works fine and the height of the display is not a problem - there is no display, no visible light inside the unit even in total darkness.
I tried the repair of soldering the 2 leads together to bypass the photoresistor in the unit but that had no effect - still no display.
I got another unit out of a 2004 with only 22,000 miles on it (looks brand new), plugged it in, and that one also has no display at all, mirror motor works fine.
So where do I go from here? Get another HUD unit? Doubt that will help.
And my windshield is clean.
The IPC works fine, fuses 19 and 25 are intact, but can the problem be in the IPC, or do I next replace the HUD controls because maybe the problem lies within the dimmer switch?
Is there any way to test that unit or anything else that can cause the display to slowly dim over time and them go out? Anything inside the IPC I can investigate? And why should that crap out?
I can understand how the dimmer switch could just fail but not understand how it could behave like this, and if I replace that unit and it still doesn't work, then what?
Somebody help me, I really don't want to put my car back together, button it up and just bury the dead HUD display in the dash. I miss that thing.
Last edited by mrlmd; May 1, 2019 at 12:51 PM.
Thread Starter
Drifting
Joined: Jun 2013
Posts: 1,957
Likes: 342
From: Shell Point (Crawfordville) Florida
Got it fixed and all back together, seems to work now.
Have to take it out for a ride tomorrow and check it out.
Interesting, I had to reprogram my key fob after I was dome, didn't have to do that to unlock the car this morning before I started on it. Had the doors open all day but the car was conected to a battery charger and never got run down.
Have to take it out for a ride tomorrow and check it out.
Interesting, I had to reprogram my key fob after I was dome, didn't have to do that to unlock the car this morning before I started on it. Had the doors open all day but the car was conected to a battery charger and never got run down.
Melting Slicks
Joined: Aug 2013
Posts: 2,491
Likes: 315
St. Jude Donor '15-'16-'17-'18-'19-'20-'21-'22
Got it fixed and all back together, seems to work now.
Have to take it out for a ride tomorrow and check it out.
Interesting, I had to reprogram my key fob after I was dome, didn't have to do that to unlock the car this morning before I started on it. Had the doors open all day but the car was conected to a battery charger and never got run down.
Have to take it out for a ride tomorrow and check it out.
Interesting, I had to reprogram my key fob after I was dome, didn't have to do that to unlock the car this morning before I started on it. Had the doors open all day but the car was conected to a battery charger and never got run down.
Melting Slicks
Joined: Jan 2009
Posts: 3,275
Likes: 739
From: Miami FL
Just to avoid leaving this thread open-ended, it seems that a solution was not found and that the malfunctioning unit was simply replaced, as per the following paragraph from a post on another thread. Click here for the whole post.
There is a fix for a bad HUD photoresister on here, by soldering the 2 contacts together on the back of the holder, to bypass the resistor - search for it or find my thread about my HUD display failure. This did not work for me and I had to find a new display unit to fix this problem.
Last edited by GCG; May 25, 2019 at 11:45 AM.
