Collision warning when using intelligent cruise when passing on right

[BruceWayne]

Recently my MachE has issues when using Intelligent Cruise in a multi-lane road.
When passing a car (car adjacent to my passenger side), the MachE will warn of a collision alert and just slam on the brakes.
Does not happen if a car is on the drivers side (passing or being passed)......dangerous if someone is behind me.
Otherwise it works ok....this did not happen a few months ago. I have only 9,000km on the car so far.

Anyone else have this issue?

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[SnBGC]

Not your exact same symptom but I had something similar this morning myself....
I was using ACC and the Lane Keeping thing. I ride in the far left (HOV) lane and came up to stop and go traffic in the normal commuter lanes to the right. As soon as I reached the pack.....my car applied the brakes very aggressively. Slowed me from 68 mph to less than 50 mph before I reacted and accelerated manually. There was no vehicle in front of me at the time and I looked at the driver's screen for the icon that indicates it sees a car ahead and nothing there. The bubble went away and just the lane keeping green lines remained.

Weird. And a bit scary.
I did NOT get a collision alert though. In fact, I didn't get any messages at all. The car just applied the brakes very strongly. If I had to guess......it was max regen and not friction brakes so not equivalent to slamming on the brakes.....just decelerating very strongly.

 

[BruceWayne]

Same behaviour, happens when I have a car to my right in the next lane (passing or being passed)

 

[SnBGC]

Same behaviour, happens when I have a car to my right in the next lane (passing or being passed)

I don't think that is normal then. I have almost 31,000 miles on my car and I use ACC all the time. This morning is the very first time it did that and I routinely encounter the situation I described.

And I have Auto OTA turned off so I don't know why the behavior has changed. Very strange that someone else's car is experiencing a similar symptom. I wonder how many others are experiencing this or if it's just our two cars?

 

[HuntingPudel]

Not your exact same symptom but I had something similar this morning myself....
I was using ACC and the Lane Keeping thing. I ride in the far left (HOV) lane and came up to stop and go traffic in the normal commuter lanes to the right. As soon as I reached the pack.....my car applied the brakes very aggressively. Slowed me from 68 mph to less than 50 mph before I reacted and accelerated manually. There was no vehicle in front of me at the time and I looked at the driver's screen for the icon that indicates it sees a car ahead and nothing there. The bubble went away and just the lane keeping green lines remained.

Weird. And a bit scary.
I did NOT get a collision alert though. In fact, I didn't get any messages at all. The car just applied the brakes very strongly. If I had to guess......it was max regen and not friction brakes so not equivalent to slamming on the brakes.....just decelerating very strongly.

My GT-PE sometimes slams the brakes on when it’s ACC sees a car parked on the right at a specific lazy right curve. So far, it has only been annoying. I guess this is a stretch of road where I should be driving manually so that I don’t get rear-ended. ??‍?

 

[BruceWayne]

My GT-PE sometimes slams the brakes on when it’s ACC sees a car parked on the right at a specific lazy right curve. So far, it has only been annoying. I guess this is a stretch of road where I should be driving manually so that I don’t get rear-ended. ??‍?

I think that will happen for many. My GMC Canyon also did that on a slight right curve.
This issue happens while driving, I used to be able to be in the left or middle lane on the 401, now I can only use it if I am in the very right lane.

 

[rhizomatic]

I think that will happen for many. My GMC Canyon also did that on a slight right curve.
This issue happens while driving, I used to be able to be in the left or middle lane on the 401, now I can only use it if I am in the very right lane.

I've travelled between Toronto and Bowmanville a few times in my GT-PE and never had this problem. Last trip I stuck to the middle lane with adaptive cruise set at 110KM and car distance at the maximum, didn't touch the steering wheel once between Don Valley and 115. The only annoying irregularity I have noticed is if I am travelling below the set speed due to traffic and a car cuts into the lane travelling at the set speed the GT-PE will accelerate to match the other car's speed only to have to immediately brake once the other car either slows down to match traffic or cuts into another lane.

 

[SnBGC]

My GT-PE sometimes slams the brakes on when it’s ACC sees a car parked on the right at a specific lazy right curve. So far, it has only been annoying. I guess this is a stretch of road where I should be driving manually so that I don’t get rear-ended. ??‍?

Interesting....
My experience this morning was on a dead straight highway. Maybe 6 lanes wide. Concrete barrier on my left, no vehicles in front of me and approaching heavy traffic on the right. Have encountered this scenario many times in the previous 365 days with the car. Never had the car apply the brakes in this scenario before.

 

[Peaceowl]

Yikes none of that sounds normal. risky. The only time I experienced any kind of unwarranted braking was in a test drive on a Premium, when Cruise control was on and I didn’t know it, and the car was excellerating in bumper to bumper traffic and braking oddly. Scared the heck outa me. I do not use it anymore nor lane assistance in my GTPE. I feel safe and in control, and I don’t want stress in my life because of a car. No problems at all.

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