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Car Forum / Mercedes-Benz Cars / August 2005

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Rain sensor

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Jan - 13 Aug 2005 13:54 GMT
Anyone know how to get the intermittent rain sensor reattached to the
glass so it works?

Jan Widome
Karl - 13 Aug 2005 16:11 GMT
You buy a new windshield from MB!
It has to be perfectly bonded to the glass with no air bubbles or passages for light to enter.
Sorry, you cannot go the cheap route and buy a $99 aftermarket windshield that does not have the
rain sensor installed. I see it happening at least once a week at the dealership I work at.
Insurance companies don't want to step up to the plate and buy the correct parts to begin with, but
in the end they pay twice. Once for the gypo glass and 2nd for the real one.

> Anyone know how to get the intermittent rain sensor reattached to the glass so it works?
>
> Jan Widome
Jeff - 23 Aug 2005 20:19 GMT
I just bought a 2001 E-class from a new car Mercedes dealer.  The rain
sensor was not attached (hanging down behind the rear view mirror) when I
got the car, and they put on the paperwork when I bought it they would fix
it.  The glass has been replaced as the "A Mercedes-Benz Product" sticker
was missing, and the glass didn't have the Mercedes star on it, but it is
PPG glass.  I have heard that Mercedes uses PPG for their glass.  Should I
demand a new windsheild?

Jeff

> You buy a new windshield from MB!
> It has to be perfectly bonded to the glass with no air bubbles or passages
[quoted text clipped - 9 lines]
>>
>> Jan Widome
JMW - 24 Aug 2005 14:26 GMT
> I just bought a 2001 E-class from a new car Mercedes dealer.  The rain
> sensor was not attached (hanging down behind the rear view mirror) when I
[quoted text clipped - 19 lines]
>>>
>>>Jan Widome

(Comment from Jan:  If the paperwork said they would fix the rain
sensor, then they really fix the rain sensor or commit consumer fraud.
How they fix it is their problem, not yours. If the paperwork said they
would replace the windshield, it sounds like they did what they said
they would do - and you'll just have to live with the disgrace of
driving a Mercedes with a fixed-interval intermittent wiper as opposed
to a rain-sensing variable interval one.

FYI, here's how I am treating the problem now:

I removed the rain sensor altogether, including unplugging it, and now
the intermittent setting does periodic swipes about once every 4 seconds
- something I can live with until I maybe find an M-B junkyard
windshield with rain-sensor intact (and even then I still may not want
to shell out to install a whole windshield...)

When people ask me about recommending M-B, I just ask them whether they
think it makes sense to buy a car which has an irreparable gimmick which
may cost up to $600 to replace and which most people really won't miss,
or whether they would like to spend their money a bit more sane-ly.

I wonder if a faulty wiper control can mean a recall or an 'unfitness'
claim [$$$] ??)

Of course, if anyone from M-B is reading this, you're welcome to
exercise your nasty little 'goodwill' program and fix the silly thing as
only you can ...

Jan)
Dori A Schmetterling - 24 Aug 2005 15:48 GMT
I have had a couple of things done under 'goodwill' or at low cost by a
sympathetic service engineer.

I would not sneeze at the programme.

DAS
Signature

For direct contact replace nospam with schmetterling
---

[...]
your nasty little 'goodwill' program and fix the silly thing as
> only you can ...
>
> Jan)
Jeff - 24 Aug 2005 19:15 GMT
How do you disconnect it?  I would like to disconnect mine since it just
hanging there (causing a rattle).

>> I just bought a 2001 E-class from a new car Mercedes dealer.  The rain
>> sensor was not attached (hanging down behind the rear view mirror) when I
[quoted text clipped - 49 lines]
>
> Jan)
JMW - 24 Aug 2005 21:42 GMT
> How do you disconnect it?  I would like to disconnect mine since it just
> hanging there (causing a rattle).
[quoted text clipped - 52 lines]
>>
>>Jan)

Mine has a little plug right where the wire enters the sensor box.  Just
pull it out.

Jan
JMW - 24 Aug 2005 21:54 GMT
>> How do you disconnect it?  I would like to disconnect mine since it
>> just hanging there (causing a rattle).
[quoted text clipped - 60 lines]
>
> Jan

Let me re-answer...

The Rain-Sensor 'cube' is in a pleasant little rounded black plastic
cover just behind the Rear-View Mirror.  The RVM can be eased out of its
socket (ball & joint type - for break-away protection) to give you a
little bit more room.  If you can remove this RS cover - and it's only
held on with three small plastic clips - then you will see the real RS
unit and the plug going into the top of it.

If yours is just hanging, then look at the front of it an you'll see
what I am trying to describe.

Good luck.

Jan
Jeff - 25 Aug 2005 06:06 GMT
Thanks for the advice.  The glass part was attached to the windshield.
After removing the cover from the sensor, I was able to see how the unit
attached and snapped it on.  So far it is working great.

What's bad, is this morning I took the car to the deal who said they would
fix it, and they said they would have to order a part and didn't even
attempt to put it on.  I then read your post, tried it myself, and it
worked.

Thanks!

>>> How do you disconnect it?  I would like to disconnect mine since it just
>>> hanging there (causing a rattle).
[quoted text clipped - 75 lines]
>
> Jan
Kalman Rubinson - 24 Aug 2005 20:37 GMT
>I just bought a 2001 E-class from a new car Mercedes dealer.  The rain
>sensor was not attached (hanging down behind the rear view mirror) when I
[quoted text clipped - 3 lines]
>PPG glass.  I have heard that Mercedes uses PPG for their glass.  Should I
>demand a new windsheild?

No. You should simply demand that they "fix" it since you have that
promise from them in writing.

Kal (who likes his rain sensor)
 
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