Subaru Forester Owners Forum - View Single Post - ('19+) Adaptive cruise/EyeSight not recognizing stopped traffic
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post #2 of (permalink) Old 05-19-2019, 09:36 AM
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PearlWhite's Avatar
Join Date: Jan 2019
Posts: 108
Originally Posted by SubieGirl19 View Post
I have a brand new 2019 Forester Touring, fully loaded with some extras (my 1st Subaru). I've had many early issues and numerous trips back to the shop, most recently to have the entire infotainment system replaced after updates only worsened literally dozens of issues, some safety-related but mostly annoying 'bugs' that weren't allowing me full or proper use of the features. I'm not sure if what I'm writing about here is a separate issue or still part of an ongoing technical issue with the car itself since some issues were fixed by the most recent repair/replacement deck... but 100% of the time, when I'm using the adaptive cruise and relying on EyeSight to sense slowed/stopped traffic ahead, it's not working. While it will pace OK with traffic while the cars ahead are in motion, anytime the traffic has come to a complete stop (at any speed including full highway speed) it will barrell toward the stopped cars at full speed and there's no way I'm going to let it go to see if it stops me pre-crash. If I didn't take over and brake in those last seconds I believe it would continue at FULL speed endlessly toward the stopped traffic (which we get a lot around the DC metro area). It's like if the traffic is stopped vs slowed, it doesn't sense it at all-- even to slow down, let alone stop. Is anyone else having this issue? I found numerous similar reports over the years on other forums for older models but the 2019 Forester is of course a 'new' car in many respects and there don't seem to be many reports on this that I've found. Thanks for any help or input!
Have a 19 Touring here. I've never seen this issue. Mine works perfectly. I guess what confuses me is how you say it's able to "pace OK with traffic while the cars ahead are in motion" yet you say it won't stop if they come to a complete stop? How is this possible? If it's keeping pace with them and they slow down does it slow down? If so and they slow further to a stop does it stop?

I get the sense you're describing something different. If the eyesight doesn't already have a car locked onto, not tracking, and you suddenly catch a stopped car, than yes, it may not work, stopping smoothly, as it's not designed for this. I believe the manual, I could be wrong, states there's a 30MPH speed difference limit. If it's not already locked on and you catch a stopped car then the emergency breaking will occur at the last second but not 100% going to stop you quick enough every time.

There are basically two modes.

Mode 1) Adaptive Cruise Control - Smooth tracking and speed matching when locked onto a vehicle in front all the way down to a smooth stop.
Mode 2) Oh **** emergency braking - when suddenly approaching a stopped vehicle it emergency brakes at the last split second. Not dependent on ACC.

What mode above are you having issues with?

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