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Discussion Starter #1
Hi all.

Has anyone else experienced problems with R171 parking sensors having a brain-fart and turning off after lots of rain? I've cleaned the sensors down but they work fine when it's been dry. Someone said it could be water in the main alarm unit? Only seemd to do it when we've had quite a lot of rain (as we have this last week or so here in the UK!

Thanks all!
 

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Discussion Starter #2
PS - I've trawled through historic posts and done a handful of searches but couldn't find this anywhere, so there's a discussion elsewhere and people know where it is, please let me know - thanks again.
 

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Registered 2006 SLK350 sold/now 2018 SL400
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301 Posts
I had many problems with the parking sensors on my old 350 And ended up replacing at least 4 of them. Not cheap as they need to be painted.
You really need a good indie with Star diagnostics.
hope you get it sorted.
Mark
 

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Discussion Starter #7
I had many problems with the parking sensors on my old 350 And ended up replacing at least 4 of them. Not cheap as they need to be painted.
You really need a good indie with Star diagnostics.
hope you get it sorted.
Mark
thanks Mark - will give taht a bash
 

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Super Moderator UK SLK 55 AMG 2007
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28,716 Posts
To start, give them a good clean.
If you can see behind the bumper, it may just be a loose/rotten contact.

Anything getting on the sensor sends them nuts and electrical contacts need to be good.

@G0RSQ did some playing with his. He'll drop by.

Personally, if I had it, I'd disconnect.
More annoying than roof rattles.
If I'm in her 350 with PT, it gets offed as soon as I start the car.
 

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Premium Member 2014 SLK55 AMG
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Don't drive in the rain? :) :) :)

( Sorry couldn't resist )
 
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Discussion Starter #10
Don't drive in the rain? :) :) :)

( Sorry couldn't resist )
To start, give them a good clean.
If you can see behind the bumper, it may just be a loose/rotten contact.

Anything getting on the sensor sends them nuts and electrical contacts need to be good.

@G0RSQ did some playing with his. He'll drop by.

Personally, if I had it, I'd disconnect.
More annoying than roof rattles.
If I'm in her 350 with PT, it gets offed as soon as I start the car.
I do ocassionally - it's only when it's been raining a lot though - seems like something dries out then they're back to normal again. I'll give em a good clean & check over.

Once it's stopped raining (ironically enough!)

J
 
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