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  #1  
Old 09-20-2006, 10:44 AM
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Rain Sensitive Windshield

'01 E320, the rain sensor is on it's way out, it starts out fine then after short while the wipers continue to wipe regardless wet or dry conditions. Does anybody know the best/easiest way to replace it (short going to the dealer)?


Last edited by bobbabigan; 09-20-2006 at 10:49 AM. Reason: The title got lost
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  #2  
Old 09-20-2006, 11:02 AM
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If it's the sensor I think it's a dealer thing

I believe it's glued on behind the rearview mirror. It's an optical sensor, so make sure there's no dirt on the glass anywhere.
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  #3  
Old 09-20-2006, 12:20 PM
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There's a few things you can do before going to the dealer . First, make sure the wiper is cleaning all the water from the glass. A slight smear is all it takes to initiate another wipe. Next, look closely at the area of the windshield where the sensor is. Using a spray bottle, hit the area with a little mist. After the wiper passes over the sensor see if it leaves a slight haze. If it does, you can use some compound to thoroughly clean the area. Almost every time it rains, I get a few clients who come in with this problem. You'd be amazed at how often this happens. If you must go to the dealer, ask them if they can try re-adapting the sensor before replacing it. This works some of the time. Good luck
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  #4  
Old 09-20-2006, 02:44 PM
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We had a similar problem that was cleared up with a fresh wiper blade.

Apparently the sensor, is very sensitive.
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  #5  
Old 09-20-2006, 06:00 PM
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Quote:
Originally Posted by thornton View Post
We had a similar problem that was cleared up with a fresh wiper blade.

Apparently the sensor, is very sensitive.
Ditto. Start with the simple stuff, change the wiper blade.

- JimY
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  #6  
Old 09-21-2006, 11:37 AM
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Thank you all. I cleaned the new blade and buffed the glass around the sensor with a very light rubbing compound (ended up cleaning the whole window that way, looks like new), and the sensor worked as it did before. It wasn't long before the wiper just kept working even when all signs of fog, mist, sprinkle, rain, deluge had vanished. What's the easiest way to remove/replace it?
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  #7  
Old 09-21-2006, 01:01 PM
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Try the "re-adapting" idea first.

Mike
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  #8  
Old 09-21-2006, 01:18 PM
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Re-Adapting? Please give me a site where I can read what that is and how to achieve it.
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  #9  
Old 09-21-2006, 02:11 PM
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I think mpolli is referring to post #3. Ask the dealer if re-adapting the sensor is even an option.
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  #10  
Old 09-21-2006, 08:47 PM
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Yes, post 3. I think "re-adapt" is Germenglish for "adjust the computer"

Mike
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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  #11  
Old 09-22-2006, 09:48 AM
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OK, I begrudgingly give; I hate the local/only dealer. Thanks anyway.

Bob

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