Rain sensor.
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From: Stourbridge, UK
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Anyone notice when its raining the sensor works ok but when it stops and water drips on to the screen from a tree etc. it doesn't work and you have to flick the wipers manually. I thought, in the words of BMW that their rain sensor lets you get on with the job of driving whilst not having to operate wipers. Not so! 
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There's a rain sensor connected to the rear view mirror on the windshield, so if by chance the occasional drop hits the windshield somewhere else, it will not cause the wipers to turn on.
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From: Stourbridge, UK
My Ride: 535D Sport Auto
Originally Posted by stream' date='Jul 5 2005, 05:18 PM
There's a rain sensor connected to the rear view mirror on the windshield, so if by chance the occasional drop hits the windshield somewhere else, it will not cause the wipers to turn on.
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From: Pittsburgh, PA USA
My Ride: G30 M550i
Model Year: 2018
What Stream and E60Speed are trying to say is that the rain sensor only "sees" a small section of the windshield (just a small part of where the rearview mirror mounts to the windshield) so if it's actually raining or if you're getting spray from a car/truck in front of you, the water will hit the windshield evenly and the sensor will pick it up. If you have a drop come off a tree and it lands in an area outside the sensor's "view", the sensor won't activate the wipers because as far as it's concerned, the windshield is dry.
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Originally Posted by Merv the Derv' date='Jul 5 2005, 03:08 PM
Anyone notice when its raining the sensor works ok but when it stops and water drips on to the screen from a tree etc. it doesn't work and you have to flick the wipers manually. I thought, in the words of BMW that their rain sensor lets you get on with the job of driving whilst not having to operate wipers. Not so!
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My Ride: 545iSMGSilver GrayAuburn Dakota LeatherLogic 7 Premium SoundSports Package
Originally Posted by TitaniumGray5' date='Jul 5 2005, 09:24 PM
c'mon its not a drip sensor.? It's a rain sensor!?
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From: Lancashire (UK)
Originally Posted by Merv the Derv' date='Jul 5 2005, 10:24 PM
[quote name='stream' date='Jul 5 2005, 05:18 PM']There's a rain sensor connected to the rear view mirror on the windshield, so if by chance the occasional drop hits the windshield somewhere else, it will not cause the wipers to turn on.
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[/quote]me thinks Merv is having another "rev counter / white lines" moment......
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My rain sensor is spot on....bald patch on the top of my head!!
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From: Pittsburgh, PA USA
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Originally Posted by mixterk' date='Jul 6 2005, 06:19 AM
My rain sensor is spot on....bald patch on the top of my head!!
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