Passat (B6) :: Blinking Thermometer With Wavy Lines Under In MFI
Dec 8, 2008
I got up this morning to a relatively cold 16 degrees. I started my Passat 2.0T to let it warm up about 10 minutes before I left. I got in the car, and started to drive and noticed in the upper mfi display a blinking thermometer with wavy lines under that. so I figured it must be something coolant related. Having to get to work, I took it slow and steady, after all it was cold...
The temp gauge came up to normal, which is dead on in the center... not even a fluctuation. Got to work, shut off the car, counted to 10 and started it... no more flashing light... car sat all day, about 9 hours, and drove home... was fine the whole time...Was this a fluke, should I check the coolant, will any coolant do? And to think I've had 8 or so months without a problem. Hopefully just a reminder I am driving a VW.
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My MFD display is starting to have a mind of it's own lately. The problems will only occur during the first 10 - 15 minutes of driving, and then the display will be normal for the rest of the drive. It is starting to occur about every 3rd day now; vs. once a month.
Various Symptoms Observed: Loss of pixels, bar lines across display, reverse video, backwards video, font triple size, no display, display floating across screen, no change in display, extra pixels, total pixalation of screen, rapidly changing displays, brightness levels changing.
I suspect either that:
1) The MFD display connection is not totally secure or is corroded, and temperature/vibration is affecting the inputs to the display board,
2) The voltage supply to the MFD board (if there is one) is slowly degrading and I will eventually experience total failure.
I have captured some of the Failure Symptoms on my digital camera (video mode), but not the recent more troubling ones. I'll have to keep my camera with me at all times to capture the rest of the failures.
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