I have installed at least 5 different dashcams between my 2020 and 2023 tourings. A couple of them have been installed at the same time. Lots of wires! As anyone who's reviewed the Eyesight manual knows, there are "forbidden" zones on the windshield where accessories aren't supposed to be mounted. The stereo cameras before 2023 forbade almost the entire windshield; the 2023+ triple camera forbids a smaller overall area but still forbids "prime" real estate for most practical camera locations.

I installed some of my cameras directly below the central monocular camera housing because that is where the camera needed to be for best front and rear viewing. It didn't seem to matter as the Eyesight seemed to behave as it should.

Or did it?

This week, I uninstalled a large 4 channel camera from directly below the mono cam housing. There has always been a camera there since I took delivery 1 1/2 years ago.

Well, the first drive without a camera there and a car entered my path from a side street. Not close enough for me to want to react or for Eyesight to emergency brake, but I did get an information display message of "Obstruction Detected". It has happened a couple of times since then. I don't ever recall getting one of those messages before so maybe there really are reasons for complying with the Eyesight "forbidden" zones.

I can only tell you this. My daughter has a 2021 Forrester (different model but same equipment) and she stuck her EZ PASS transponder directly in the top middle of the windshield under the mirror. I told her OH NO! You are not supposed to put anything there. but it's been 2 years now and her eyesight works just fine with the transponder in the so called "danger zone". So I don't know exactly how sensitive the system is to where things are installed. I stuck mine on the far left top of the windshield (despite the instructions from the toll company) and both the transponder and the eyesight have worked fine. I know this is no "official" answer, but those were the results for both of us.

 

...but it's been 2 years now and her eyesight works just fine with the transponder in the so called "danger zone".

How do you know it's working properly and at top efficiency? That's the reason it's good to avoid the so called "danger zone" as there is no way to absolutely know anecdotally that things are great. I mount my transponder on the dash, far right and have it painted black so there's no reflection. I actually did this even before I came back to Subarus because I was always having issues with adhesives letting go (at the worst possible time) because of them getting baked over and over by the sun shield while parked. Some states have transponder setups that can be external to the vehicle which is a nice alternative, too.

 

I have a '19 Ascent with a Redtiger dashcam mounted right below the rearview mirror mount. I have had no Eyesight issues that I'm aware of. Autobraking works fine (activates if I get too close to the back wall of the garage); lane detection/lane keep works fine. Not to say Eyesight isn't detecting the camera, just that it's placement hasn't caused me any problems.

 

That’s good. When we remove everything, we have to make sure any dash camera wires are out of the way of the camera housing.

 

The lower camera is a 180 degree angle camera and any sort of obstruction causes it to lose its mind. I work for Speedy glass in Canada and the Eyesight system is the most finicky and annoying thing to calibrate, especially the new triple camera system since it is a four step process to recalibrate which takes over an hour to do.

 

Too bad we even need dashcams, the eyesight cameras are right there already. From the specs that I’ve seen they are of low resolution and would be very poor dashcams, at least the earlier cameras were very low resolution. Some car makers are already offering built in dashcams.

 

IMHO its basic risk vs benefit management.
If Eyesight doesn't act up with a dashcam placed in the no-zone and actually causes an accident, then the only detriment is if it doesn't act to save you from a potential accident. An aware driver, as one should be, can mitigate this risk.
If an accident does occur, for which you're not at fault, the dashcam video becomes invaluable.
Both of these situations should be very rare occurrences but the benefits vastly outweigh the risks for me, YMMV.

Just be glad our Eyesight acts the way it does. Honda's makes me feel unsafe:
Don't signal before changing lanes? It slams on the brakes when you cross that dotted line! (inconsistently)
Set adaptive cruise control? Maybe it'll maintain speed. Maybe it'll see a car 2 lanes over and slam on the brakes. Maybe it'll just pick another speed to maintain.
Ok, rant over

 

I had a 2018 Honda Idiocy that did all that and more.

 

^ That, exactly.

I've always maintained that while no(ne/t) many of us have seen an issue even as we have crept into the danger-zone, we alas don't know what it is that EyeSight actually "sees."

It really could be anything, right? Including RF interference....I mean, those big hefty Ferrite chokes.....

We just don't know.

 

It's certainly possible that there can be some level of impact to Eyesight performance from anything in "the forbidden zone", even on MY23+, because of how light transmits through glass in a reflective way. The impact might be minor, but it can still be here and we humans may not know about the effect directly. Of course, there could also be coincidence here, too. with what you are observing.