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Radar sensor blocked

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Old Dec 31, 2019 | 08:47 AM
  #1  
BritCars's Avatar
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Default Radar sensor blocked

Up in NH for the weekend and a good amount of snow and ice. Getting the error 'radar sensor blocked' and the manual helpfully says that could be due to ice buildup but doesn't say where the sensor is
I have searched online, manual etc but can't seem to find where it is. Would love to be able to brush off the snow/ice to clear it before a long drive. Any ideas where it's located?
 
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Old Dec 31, 2019 | 10:25 AM
  #2  
andries's Avatar
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It is likely the windshield. Underneath the mirror there are 3 forward facing sensors/cameras. Make sure that area is clean.
Also the front camera in the bumper need to be clean for some operations, though doubt it is for the collision avoidance, etc.
 
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Old Dec 31, 2019 | 11:35 AM
  #3  
Tucker Woods's Avatar
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I would get warning a lot during snowy driving in my 2015 Land Rover.

I found this article online also. Not sure if this will help: https://www.consumerreports.org/car-...ean-in-winter/

Current:
2020 Discovery HSE Luxury Si6 Fuji White
Former:
2015 RRS Autobiography Fuji White
2011 RRS Supercharged Fuji White
2008 LR2 Fuji White
 
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Old Jan 1, 2020 | 07:09 PM
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Thanks. It's not the cameras in the windscreen (which are clear). They are optical and light sensing. And the camera at the very front is for the 360 vision stuff
It's a radar detector vs an optical camera. Best I've found so far is this:


radar sensor mounted at the front of the vehicle, behind a duct in the lower cooling aperture. Keep this area of the vehicle clean and free from obstructions, e.g., stickers, debris, mud, snow, or ice.

So I'll look around to see which duct / area it's referring to. Trouble is I'm not sure you can see the sensor as it might be behind some trim or bumper cover. Will check.
 

Last edited by BritCars; Jan 1, 2020 at 07:15 PM.
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Old Jan 2, 2020 | 12:14 AM
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We found out all the proximity sensors go nuts when it is icy.

Drives the wife nuts but the touchless car wash she uses has a quite good array of under car spray nozzles.

Might waste a car wash just occasionally washing off stuck ice but it's rare . . . No lines when the weather and roads are still crappy
 
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Old Jan 3, 2020 | 10:41 PM
  #6  
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I was getting the same error over Christmas holiday in Georgia... driving in heavy rain for about 4 hours. Got the error message 2x. both times it would clear and adaptive cruise would work again after 15-20 mins.
 
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Old May 10, 2020 | 04:30 PM
  #7  
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FYI. I looked at the workshop manual and here is the location of the forward facing radar system components.



 
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Old May 11, 2020 | 07:35 AM
  #8  
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So ironic you posted this. An elderly lady rolled back into me a week ago at a traffic light. Slight incline to the roadway and she apparently just wasn't pressing the brake hard enough. Very light bump, and I couldn't see any damage at all initially - not even a scratch.

A few mins later, I got error messages on Emergency Braking and Forward Collision warning. upon closer inspection, the narrow piece of the bumper cover that runs horizontal in front of the air dam has kind of "popped out of of place". I can see the top part of the ASCM being there and it looks fine, but I think that piece of foam (#2 above) is misaligned and causing errors now.

Got to take it to the body shop and see what needs to be done. I can't see anything broken or bent. Just looks a tiny bit disheveled.
 
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Old May 11, 2020 | 03:32 PM
  #9  
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Yep, there are alignment bolts for the radar components.
Hope they it fixed.
 
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Old May 12, 2020 | 06:50 PM
  #10  
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Very helpful to know where it is. Thanks! I can see how that gets covered in ice and grime during winter driving. At least I know what to clean off if it happens again. Thanks!!
 
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