GT-Papa
Well-Known Member
- First Name
- Tim
- Joined
- Nov 15, 2023
- Threads
- 4
- Messages
- 169
- Reaction score
- 230
- Location
- Denver CO
- Vehicles
- 2021 Mach-e GTPE
- Occupation
- Retired Quality Engineer
- Thread starter
- #1
I've been battling an increasing level of Front Camera Fault errors on my 21 GTPE. I tried moving the coax cable to different positions with little-to-no success.
While playing around with the camera and cables, I noticed that the left side of the camera was loose. I could push on the left side of the camera body and it would freely move up and down about .050". The mounting method for the left side of the camera is a tab into a slot: where the camera body casting is a metal tab and it fits into a plastic slot on the plastic "dish" that's glued to the windshield. The right side of the camera is a metal post that slides into a spring-loaded clip.
I decided to unclip the camera and remove it just to have a look. Eureka! In the top of the slot, above where the camera tab slides in, there is a spring meant to push the camera tab down against the bottom of the slot holding it firmly in position. I my case, the spring was completely collapsed and not supplying any tension on the camera tab, allowing it to vibrate. With a small screwdriver, I bent the spring downward so that the tab is now held very tightly in the slot. Doing this completely eliminated my front camera faults. For me anyway, it turns out that the coax cable is not the problem, but camera vibration is.
For the mechanical engineers among us, this makes perfect sense. I used to be a quality engineer and worked with mechanical engineers to do vibration testing on mechanical structures to the point of failure. My theory with this small/lightweight camera and a sloppy tab-in-slot arrangement is that high frequency road noise (think: crossing 5 sets of train tracks at a crossing at speed) caused the camera to vibrate wildly and screw up the video signal. I have just such a RR crossing near my home and this used to cause a camera fault 2 out of 3 times that I crossed it. Now... nothing. Simply by nailing down the left side of the camera, the problem has completely gone away.
For those of you who have not pulled the trim piece off of the camera mount, I've attached a few pictures. First picture - on the right side of the picture is the left side of camera (tab), and then the plastic slot that it slides into, and the spring above that is supposed to provide spring-loaded tension to the camera tab.
Second picture - the right side of the camera body (post) and the spring clip that it clips into.
Some other random pics of the area.
If you're having this issue, pull off the trim piece above your rear-view mirror (5 clips total). First check to see if the left side of you camera has any slop in it . It should have none. If it does, carefully pull the right side of the camera down to slide the post out of the spring clip, then slide the entire camera slightly to the right to pull it out of the left slot. Using a small screwdriver, bend the spring down so that it will push down on the metal camera tab when it is reinstalled. Fairly tight.
Reassemble: Slide the left-side tab back into the slot, push the right-side post back into the spring clip. Before you reinstall the trim piece, take the car out for a spin to that favorite place or yours where the front camera always faults. Lemme know if this fixes the issue for you.
I used to get multiple camera faults per day. I made this fix on March 2nd and have not had a single fault since.
While playing around with the camera and cables, I noticed that the left side of the camera was loose. I could push on the left side of the camera body and it would freely move up and down about .050". The mounting method for the left side of the camera is a tab into a slot: where the camera body casting is a metal tab and it fits into a plastic slot on the plastic "dish" that's glued to the windshield. The right side of the camera is a metal post that slides into a spring-loaded clip.
I decided to unclip the camera and remove it just to have a look. Eureka! In the top of the slot, above where the camera tab slides in, there is a spring meant to push the camera tab down against the bottom of the slot holding it firmly in position. I my case, the spring was completely collapsed and not supplying any tension on the camera tab, allowing it to vibrate. With a small screwdriver, I bent the spring downward so that the tab is now held very tightly in the slot. Doing this completely eliminated my front camera faults. For me anyway, it turns out that the coax cable is not the problem, but camera vibration is.
For the mechanical engineers among us, this makes perfect sense. I used to be a quality engineer and worked with mechanical engineers to do vibration testing on mechanical structures to the point of failure. My theory with this small/lightweight camera and a sloppy tab-in-slot arrangement is that high frequency road noise (think: crossing 5 sets of train tracks at a crossing at speed) caused the camera to vibrate wildly and screw up the video signal. I have just such a RR crossing near my home and this used to cause a camera fault 2 out of 3 times that I crossed it. Now... nothing. Simply by nailing down the left side of the camera, the problem has completely gone away.
For those of you who have not pulled the trim piece off of the camera mount, I've attached a few pictures. First picture - on the right side of the picture is the left side of camera (tab), and then the plastic slot that it slides into, and the spring above that is supposed to provide spring-loaded tension to the camera tab.
Second picture - the right side of the camera body (post) and the spring clip that it clips into.
Some other random pics of the area.
If you're having this issue, pull off the trim piece above your rear-view mirror (5 clips total). First check to see if the left side of you camera has any slop in it . It should have none. If it does, carefully pull the right side of the camera down to slide the post out of the spring clip, then slide the entire camera slightly to the right to pull it out of the left slot. Using a small screwdriver, bend the spring down so that it will push down on the metal camera tab when it is reinstalled. Fairly tight.
Reassemble: Slide the left-side tab back into the slot, push the right-side post back into the spring clip. Before you reinstall the trim piece, take the car out for a spin to that favorite place or yours where the front camera always faults. Lemme know if this fixes the issue for you.
I used to get multiple camera faults per day. I made this fix on March 2nd and have not had a single fault since.
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