R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

"Auto" headlamp problem

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Old 02-10-2009, 12:39 PM
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R350
"Auto" headlamp problem

My 06 R350 has "auto" headlamp problem. It seems to turn on by itself even it's under bright sunlight. I have visit the dealer and it said it needed software update. However, the problem still exist.

Here is what I find. When I turn the headlamps to off, headlamps shut off. When I turn to "auto" it turns on (in bright daylight). It does not kick into the "delay" off (set to 30 seconds delay) as if it's at night time.

Anyone has this problem? Please help.
Old 02-10-2009, 06:07 PM
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Can't figure what it could be specifically, but doesn't sound like a software issue. That is going to be a fuse/electrical issue.

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