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post #1 of 26 Old 03-10-2017, 08:41 AM Thread Starter
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Sensing radar obstructed

Had never seen come up before. Radar was obstructed by snow


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post #2 of 26 Old 03-10-2017, 09:49 AM
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Happened to me on my new Highlander the second day I had it. Drove up to the twin cities through off-and-on snow. First time I tried out ACC I got about 30 seconds out of it before I got the message. Makes me wonder how autonomous cars are going to do in crummy weather.


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post #3 of 26 Old 03-10-2017, 10:25 AM
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Sorry just had to...

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post #4 of 26 Old 03-10-2017, 12:20 PM
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Quote:
Originally Posted by HondaBob View Post
Makes me wonder how autonomous cars are going to do in crummy weather.
Thought about this exact thing the last time I headed north in a snow storm - no way to control bad weather covering the sensing equipment.

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post #5 of 26 Old 03-10-2017, 12:27 PM
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I experienced the same thing today due to the snow....I just ignored it until the sensor cleared itself away. I've experienced this years ago when I had my Infiniti.
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post #6 of 26 Old 03-10-2017, 01:22 PM
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Well maybe they'll just restrict autonomous cars to places where it don't snow.

And/or they need to install a heater/defroster in the radar sensor enclosure to keep the snow off...??
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post #7 of 26 Old 03-22-2017, 03:18 PM
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OP your photo is incorrect. The radar is up in the windshield by the rearview mirror. In the 2013 to 2015 Touring models the radar was in the position you are pointing to.

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post #8 of 26 Old 03-22-2017, 03:56 PM
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Quote:
Originally Posted by WDMaccord View Post
OP your photo is incorrect. The radar is up in the windshield by the rearview mirror. In the 2013 to 2015 Touring models the radar was in the position you are pointing to.
Don't think that's right...

I have a '16 Coupe EX CVT + Sensing and the radar is where the OP indicated. The radar is shared by ACC and CMBS systems. The area behind the rearview mirror is the camera for LKAS, RDM, auto high beams, auto-wipers, etc.

From the '16 Coupe manual:
The radar sensor is at the lower part of the front bumper.
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post #9 of 26 Old 03-22-2017, 04:05 PM
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I was wondering if it would be possible to put some type of heater in that area to keep it clear ? Same thing happened to me on I-70 through Ohio in December 2015. Ran into a snow/ice squall and the front of the car was covered quickly and I got the same error message. I pulled over at the next rest stop, cleared the area, and was back in business.

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post #10 of 26 Old 03-22-2017, 04:10 PM
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Quote:
Originally Posted by TomFromMo View Post
I was wondering if it would be possible to put some type of heater in that area to keep it clear ? Same thing happened to me on I-70 through Ohio in December 2015. Ran into a snow/ice squall and the front of the car was covered quickly and I got the same error message. I pulled over at the next rest stop, cleared the area, and was back in business.
I did suggest auto makers should consider putting a heater in the radar detector a few posts earlier in this thread. Maybe I should patent the idea.
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post #11 of 26 Old 03-22-2017, 04:57 PM
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Millimeter wave Radar doesn't work because of a dusting of snow? Huh, shouldn't there be planes plowing into each other every hour of every day? And the navy in the North Atlantic and Arctic Ocean must be totally fsck'ed 98.7% of the time. And I can only assume that during the Battle of Britain, the Luftwaffe only attacked on clear sunny days?

When oh when will mankind every invent a weather proof, remote detection device of some kind . This continual reliance on the Mk.I mammalian eyeball is a curse!!!
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post #12 of 26 Old 03-22-2017, 05:16 PM
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Quote:
Originally Posted by MikeNC View Post
Millimeter wave Radar doesn't work because of a dusting of snow? Huh, shouldn't there be planes plowing into each other every hour of every day? And the navy in the North Atlantic and Arctic Ocean must be totally fsck'ed 98.7% of the time. And I can only assume that during the Battle of Britain, the Luftwaffe only attacked on clear sunny days?

When oh when will mankind every invent a weather proof, remote detection device of some kind . This continual reliance on the Mk.I mammalian eyeball is a curse!!!
Don't know about the Luftwaffe, but I bet every modern plane and ship has some sort of heating in their radar domes. And guess I'm too late with a patent, since a has already been granted for my idea.
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post #13 of 26 Old 03-22-2017, 05:41 PM
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This is why true self-driving cars will never become a reality.

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post #14 of 26 Old 03-22-2017, 06:10 PM
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OMG, the radar isn't working!
Whatever shall I do?

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post #15 of 26 Old 03-22-2017, 06:13 PM
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Quote:
Originally Posted by Ronch View Post
Don't know about the Luftwaffe, but I bet every modern plane and ship has some sort of heating in their radar domes. And guess I'm too late with a patent, since a has already been granted for my idea.
Actually, my point is that for many radars, they do not. They have simple plastic or ceramic covers over the receivers, and they work just fine in rain, sleet, snow, extreme cold and so forth. Large military radars put out so much energy they are always very warm, but recreational boat radars, small plane weather radars and such devices do not. A radar receptor covered in light snow should not be impeded in any way at all. It's ridiculously that the snow shown in the OP's photo shut down the dang receptor for a low energy millimeter radar at short ranges. If that is sufficient to impede such systems, then there is no point putting them in car's to begin with. The OP's photo shows a mere dusting of snow, and it's even melting on the roadway, so hardly some extreme weather. They get that kind of thing in Florida and Victoria B.C. at times!

I have been at sea on scientific research ships in the North Atlantic using commercial weather and navigation radar, with the radar antennae caked in ice, snow and sleet, and they work just fine. No heating or clearing required to use what is inherently meant to be an all weather remote detection system.


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