Backup camera issue
Essentially, once the car is in reverse, I would get a black screen (as pictured) or lately it would be a black screen with static lines all over the screen. I brought it in for service a few weeks ago, showed to the service manager a video clip of the problem I had taken from my phone. He said he has never seen anything like it. Kept the car for a day, then according to the service summary, they went and replaced the "reverse camera voltage supply module". Everything was fine when I picked it up, brought it home, the next day the same problem occurred...again about 20% of the time. It is still intermittent, can't exactly tell when it will happen, but I have been videotaping each time it happened.
Wondering if anyone has had this problem in their W164 or know what the real issue might be? Thanks!
It's like the lens cap of a camera is left on!
This resulted in a black screen with the reversing guide lines projected on it.




Put the vehicle in reverse and depress the parking brake fully, then get out of the car and go to the back of your ML and just above the chrome trim strip below the three pointed star give it a good SMACK and it should instantly start working.
The problem is a junk connector that connects the video from the camera to the HU.
We would lose all dash board read-outs in the middle of the gauge cluster on occasion for about 15 seconds as well as the radio volume automatically adjusting while driving at a consistent spend, not when slowing down. It was not the auto volume control.
In addition, there were times when we would start the ML and it would take over a minute (my wife has timed it) for the Nav/Audio display to come on.
In June MB did a software update to the Audio/Nav system that seems to have corrected the issue, for now. Our service adviser told us that this was a pretty common problem.
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Hi AudiA4Turbo22,
Do you know the exact PART that creates the problem? I'm wondering if there is a way to go to the dealership and point exactly the faulty part? - Just to 'avoid' the dance...
On my ML550, manufactured in 5/2011, I noticed recently same problem. When turned in R, the screen goes blank. When turned back to D or to P, the screen comes back to life. It happened just couple of times, without any pattern. I got the idea that the cause must be loose connector somewhere, but I was afraid that 'tracing' an electric circuit is not so easy. Furthermore, Murphy's Law could interfere, and everything be working perfect when the car is in the shop.
Thank you very much.
Last edited by AudiA4Turbo22; Aug 28, 2012 at 07:03 PM.




Essentially, once the car is in reverse, I would get a black screen (as pictured) or lately it would be a black screen with static lines all over the screen. I brought it in for service a few weeks ago, showed to the service manager a video clip of the problem I had taken from my phone. He said he has never seen anything like it. Kept the car for a day, then according to the service summary, they went and replaced the "reverse camera voltage supply module". Everything was fine when I picked it up, brought it home, the next day the same problem occurred...again about 20% of the time. It is still intermittent, can't exactly tell when it will happen, but I have been videotaping each time it happened.
Wondering if anyone has had this problem in their W164 or know what the real issue might be? Thanks!
If you're adventurous, hollow the plastic and use it to hold the newly soldered wires. That adds work, though. Or make your own loop with a zip tie and protect the wiring with el. tape. Also adds work.
Put the vehicle in reverse and depress the parking brake fully, then get out of the car and go to the back of your ML and just above the chrome trim strip below the three pointed star give it a good SMACK and it should instantly start working.
The problem is a junk connector that connects the video from the camera to the HU.
It totally worked! I put the vehicle in reverse, depressed the hand brake (in your feet) and gave the chrome trim above the camera a good smack...and now its working. Thanks!
Put the vehicle in reverse and depress the parking brake fully, then get out of the car and go to the back of your ML and just above the chrome trim strip below the three pointed star give it a good SMACK and it should instantly start working.
The problem is a junk connector that connects the video from the camera to the HU.
hahaha it workded



