fgbaloh

During my first winter with the car I have noticed that the nav screen does not come on initially in the cold weather. I assume this is a LCD screen related thing but would like to make sure mine is not the only car which does this. Didn't find anything in search. Anyone else with a similar issue.

frank

rprellwitz

this is my second winter with the M5- I live in Wisconsin - I have not had that particular problem with the NAV system. It does occasionally lock up for no apparent reason irregardless of the weather.

WishM5

I have the same problem. During a service visit towards the end of last winter, I mentioned it to my SA and they did seem to fix it (don’t know if they did anything) because the problem seemed to disappear. Fast-forward to this winter and the problem is back. The frustrating part of it is that it discourages me from using the “Code” feature because it can take as long as a minute and a half for the screen to come on. It’s pretty frustrating sitting in the parking lot at Giant stadium, freezing your butt off after a game, and the three friends you brought along want to know why you can’t start your car.

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'02 M5 Sterling Grey

Peter Gutniak

I currently have the same problem in my -02 E46 M3. Here´s some background info:

My Nav started to act funny a couple of weeks ago. First, it thought that the car was positioned a km or so away from where I actually was (IRL... ). After trying to reset the NAV in all possible ways, including leaving the car with its engine off for a half hour and using all hidden service modes I could think of, I called BMW Emergency Service to see if I could get hold of someone with an in-depth knowledge on how to reset the NAV. They didn´t have a clue, so I decided to drop by BMW in Stockholm the morning after to try to rectify the situation (pretty annoying when the car thinks it´s a submarine, being a couple of clicks out in the ocean... ).

Anyway, later that night I stopped by a shop to return some DVD´s. I left the engine running, and when I returned to the car some 20 seconds later, the display had changed completely. It now showed a totally different menu, some strange fonts and a colorscheme created by a designer that God chose to forget all about. The whole Nav-part was completely gone! Apparently, it was some kind of emergency menu, since all other functions worked properly, albeit looking pretty strange.

So the morning after, off I went to the smiling techs at BMW and showed them the non-existing Nav and the other weirdness. They quickly concluded that the Nav CD-unit wass broken and made sure that I got a replacement the week after. They also promised that this would be a temporary solution, and promptly ordered a Nav DVD-unit (which is on a prettty heavy backlog at the moment, approximate arrival middle of january).

Imagine my surprise when I started the car in the -2 C Stockholm morning a couple of days later and the display was dead....!!! I sat there and swore oaths that nearly made the leather seats crumble and the windshield crack (I´ve already had my share of problems with the car, and felt pretty fed up). I picked up the phone and called my contact at BMW to tell them I was on my way, but as soon as the number was dialled, the display popped up, and all systems were go...! Ok, now I knew that the problem lied within the CD-unit itself, and not the display, since the exchange of the unit doesn´t involve anything more than removing the unit in the back and replacing it.

To make a long story short;
If you have "cold-starting" problems with your Nav, it´s most likely that it´s only the CD-unit acting up. It´s a known issue with X-series and 00-01 3-series.


Best regards
Peter Gutniak

fgbaloh

I wonder if i could convince bmw to replace the unit with the dvd. it has not really been a major problem and i would be hardpressed to show any major damages by having to wait a couple minutes for the unit to work. it just concerns me that other people with cold weather cars have not had similar problems. perhaps this problem will progess to something worse. i guess time will tell. thanks for the replys.

frank