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Screen not bright on a cold car?

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Old 01-12-2007, 05:58 AM
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Lately I have noticed that the screen is not bright enough when I start the car, esp when it has been sitting overnight. I don't seem to recall this happening last winter. Have any of you noticed this?

The display gets plenty bright after 5 minutes or so.
Old 01-12-2007, 05:59 AM
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Yes, especially the last few days when it has been in the minus teens.

This used to occur on my previous E60 as well. Gone after a few minutes when the car warms up.
Old 01-12-2007, 07:49 AM
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my screen almost pulsates ... dim to bright... anybody think that it might be my battery being low charged??? kinda concerned..ericd
Old 01-12-2007, 08:14 AM
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Originally Posted by SolanNo1' post='377232' date='Jan 12 2007, 09:58 AM
Lately I have noticed that the screen is not bright enough when I start the car, esp when it has been sitting overnight. I don't seem to recall this happening last winter. Have any of you noticed this?

The display gets plenty bright after 5 minutes or so.
Yup, LCD screens don't like to be frozen. Thus the term "Liquid" Crystal Display really starts to mean something. Just give them a few minutes to warm up they'll be fine.
Old 01-12-2007, 08:24 AM
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oh, thank good i thought i was going color blind....
my car does that too... sounds like its a temp issue,
pehaps when weather is cold its darker, and brightens up when it goes to operating temp...
Old 01-12-2007, 08:40 AM
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Madoon, how cold does it get in Bahrain?
Old 01-12-2007, 09:05 AM
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it never gets cold but this year temperatures have fallen to about 7 and 8 Celsius.. some are probably saying thats not cold..well it is for us...in the early morning i can see the main menus words arnt white, a little gray...thats how i first noticed it... thought i was still asleep when i looked at it again after about a minute and it was normal...the second day, same thing.. by third day was beging to fear something was going wrong with the screen.. i did think about the temp because some screens do get darker when its hot which happens alot here.. but its only been a week since i noticed this and its very slightly darker......i noticed it...but its very difficult to notice..
Old 01-12-2007, 09:10 AM
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http://forums.e60.net/index.php?showtopic=19820&hl=
Old 01-15-2007, 06:02 AM
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Originally Posted by nickolas_g' post='377270' date='Jan 13 2007, 02:14 AM
Yup, LCD screens don't like to be frozen. Thus the term "Liquid" Crystal Display really starts to mean something. Just give them a few minutes to warm up they'll be fine.
The backlighting for the LCD is CCFL. Not always, but, 90% of them are today. CCFL is a type of a fluorescent lamp. CCFL does not operate efficiently at low temps. It is darker when the car is just started, even on a "normal" day. When the ambient temperature is very low, it may take a lot longer for the CCFL to warm up and get to the brightness set.

Sorry, automotive grade LCD's liquid crystal material does not freeze at temperatures at which the car can be started or operated...

Just my informed $0.02.
Old 01-15-2007, 07:47 AM
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Originally Posted by mshasegawa' post='378476' date='Jan 15 2007, 03:02 PM
Just my informed $0.02.
Always a pleasure to read an expert's contribution.

Thanks.

As an aside I've noticed that the brightness adjuster for the instrument panel/LCD screen is adjustable dependent upon ambient light level as determined by the on-board light sensors. During the "day" I have no adjustment at all.

ABC


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