Navi Screen flickering only when headlights are off!

divinchi · #1 12-30-2019, 08:10 AM

So my navi/screen started going crazy the other day, cutting off and on, then flickering to the point where I thought the screen was shot. This morning it's raining like crazy and I had the headlights on and fog lights and the screen was perfect. Then once I arrived to work, I turned off the headlights and it started up again, I turned them back on and it was perfect again. I will try to send a video once I get a chance. Anyone else with this problem?
Thank you for any help

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ard · #2 12-30-2019, 03:31 PM

hmm...just guesses...

Have you checked for any water leaks? Under the rear deck, in that electronics bay, or in the front footwell areas behind the carpeting... lots of modules that- if they are shorted or otherwise fubar can cause resetting and noise on the different comms busses.

Any battery issues?

divinchi · #3 12-30-2019, 03:43 PM

Thanks for the reply,

The battery is 5 months old, no issues, I will check for water when I am out of work and update you. It just started happening 5 days ago and at first I thought it was the screen until this morning when it was working well until I turned off the headlights.

So let's see if there are any leaks

divinchi · #4 12-31-2019, 08:36 AM

So I checked the car and no soaked wet spots, it's been raining all here the last two days but this started before the rain came. I'm trying to post a video of it but the site isn't letting me. I will try to post it to YouTube and see if that will work. Anyone else with this problem? Any more suggestions? The only thing new that I've noticed is that I now have a E18F code and from my research am not able to find out what that means.

divinchi · #5 12-31-2019, 08:41 AM

https://youtu.be/aB3mSRQ9hnk

ard · #6 12-31-2019, 12:40 PM

Quote:

Originally Posted by divinchi

So I checked the car and no soaked wet spots, it's been raining all here the last two days but this started before the rain came. I'm trying to post a video of it but the site isn't letting me. I will try to post it to YouTube and see if that will work. Anyone else with this problem? Any more suggestions? The only thing new that I've noticed is that I now have a E18F code and from my research am not able to find out what that means.

There are a TON of posts around E18F.... seems to be a data fault in the MOST communications buss which sends data from the nav unit to the display in the dash. PRECISELY the kind of thing that correlates with ‘the display flashing and resetting’.

The MOST buss is a fiber optic. Read up on newtis.info on routing,and where the ends are located. Inspect.

In my brief google search, there are a handful of threads to look at. Oh...DO NOT think it needs to be an X5, same year, same same. Just a BMW.

GL

divinchi · #7 12-31-2019, 01:11 PM

Quote:

Originally Posted by ard

There are a TON of posts around E18F.... seems to be a data fault in the MOST communications buss which sends data from the nav unit to the display in the dash. PRECISELY the kind of thing that correlates with ‘the display flashing and resetting’.

The MOST buss is a fiber optic. Read up on newtis.info on routing,and where the ends are located. Inspect.

In my brief google search, there are a handful of threads to look at. Oh...DO NOT think it needs to be an X5, same year, same same. Just a BMW.

GL

Thanks for the information, I will check out the website for sure to see if it helps.

divinchi · #8 01-01-2020, 11:27 AM

Okay, so I can't figure out what is causing the flickering. The Error I am getting is due to a new MULF I installed but the flickering was happening before I installed that unit. So the error has nothing to do with the flickering.

Happy New Year to everyone, may your BMW's drive strong without issues this year and may you be blessed with only having to do regular maintenance...

ard · #9 01-02-2020, 01:15 AM

Quote:

Originally Posted by divinchi

Okay, so you can't figure out what is causing the flickering. The Error I am getting is due to a new MULF I installed but the flickering was happening before I installed that unit. So the error has nothing to do with the flickering.

Happy New Year to everyone, may your BMW's drive strong without issues this year and may you be blessed with only having to do regular maintenance...

YOU said ‘the only thing new is E18F’.... now you are changing the story?

Good luck....

acidgreeny · #10 01-02-2020, 04:15 AM

Just a thought but my screen would flicker on my previous vehicle (X5 e53) when I had a poor connection to or was just about to expire halogen h7 headlight bulb. Scared me the first time I saw it there was a oh shit moment thinking my display was just about to expire. I realise these vehicles have a different way of doing things but just thought I'd give you an idea of what happened to me. Good luck with it.

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