Adaptive CC

[Suprawill1]

Hi All,
I was using the cruise control yesterday in adaptive mode. The car in front of me slowed down to a stop and the ST followed suit and stopped as it's supposed to.
After the 4 second interval, I was waiting for it to go to stop mode when all of the sudden, the ST took off and I had to quickly brake before it hit the car in front of me.
Has anyone else experienced this behavior and what do you think was the cause?
Note that the vehicle in front of me was not centered but a little more than half of it was still directly in front.

On another note, I was topping off all the fluids before a trip. The engine oil was a half quart down. Not paying attention, I picked up the wrong oil and put a half
quart of ULV transmission fluid in before I realized what I was doing. After this bonehead move, I drove to a Jiffy Lube that was about 5 miles away to drain and refill
with their full synthetic. Am I in any trouble by doing that? In an older engine, putting a half quart of trans fluid wouldn't be a problem but don't know how these newer
engines would respond to this. I regret not being able to refill with the Mobil One I usually use but I was already behind schedule for the trip so I had to use a quick service.
Thanks for your thoughts!

 

[2020FordRaptor]

Hi All,
I was using the cruise control yesterday in adaptive mode. The car in front of me slowed down to a stop and the ST followed suit and stopped as it's supposed to.
After the 4 second interval, I was waiting for it to go to stop mode when all of the sudden, the ST took off and I had to quickly brake before it hit the car in front of me.
Has anyone else experienced this behavior and what do you think was the cause?
Note that the vehicle in front of me was not centered but a little more than half of it was still directly in front.

On another note, I was topping off all the fluids before a trip. The engine oil was a half quart down. Not paying attention, I picked up the wrong oil and put a half
quart of ULV transmission fluid in before I realized what I was doing. After this bonehead move, I drove to a Jiffy Lube that was about 5 miles away to drain and refill
with their full synthetic. Am I in any trouble by doing that? In an older engine, putting a half quart of trans fluid wouldn't be a problem but don't know how these newer
engines would respond to this. I regret not being able to refill with the Mobil One I usually use but I was already behind schedule for the trip so I had to use a quick service.
Thanks for your thoughts!

I think as long as you didn’t drive that much (5 miles) and didn’t drive hard, then I’d say you should be okay. As far as adaptive cruise control, stop and go always makes me nervous, as it sometimes is finicky and doesn’t sense stuff. I just think that’s the deficiencies in the design of the system.

 

[Loaded05]

The programming on the adaptive in stop and go is way off, IMO. I've found that with vehicles that sit higher, the computer wants to get waaaay to close for my comfort, like it cant see the back of the vehicle, but is measuring the distance to the tires/axle. If the vehicle is pulling a low trailer, its almost like the trailer is not even there at all.

I have experienced what you are describing, but my vehicle never even came to a stop, it just wanted to just keep going. I've resorted to just using the ACC on the highway. Once I hit stop and go traffic, I shut it off.

 

[2020FordRaptor]

The programming on the adaptive in stop and go is way off, IMO. I've found that with vehicles that sit higher, the computer wants to get waaaay to close for my comfort, like it cant see the back of the vehicle, but is measuring the distance to the tires/axle. If the vehicle is pulling a low trailer, its almost like the trailer is not even there at all.

I have experienced what you are describing, but my vehicle never even came to a stop, it just wanted to just keep going. I've resorted to just using the ACC on the highway. Once I hit stop and go traffic, I shut it off.

That’s what I do. It also loves to accelerate pretty hard too.

 

[Suprawill1]

I think as long as you didn’t drive that much (5 miles) and didn’t drive hard, then I’d say you should be okay. As far as adaptive cruise control, stop and go always makes me nervous, as it sometimes is finicky and doesn’t sense stuff. I just think that’s the deficiencies in the design of the system.

Right? That's a heck of a deficiency though, it would have rammed the car in front of me. That's the first time I've had any problems with it after driving this vehicle for 2 years.

As far as the oil mishap, I pretty much limped it to the lube place. It was only about 5 miles.
I'm curious though as to what the difference this engine is vs the older ones where it wouldn't have hurt it. That would tell me what damages to expect if I went any further or boosted under that condition.

 

[Suprawill1]

The programming on the adaptive in stop and go is way off, IMO. I've found that with vehicles that sit higher, the computer wants to get waaaay to close for my comfort, like it cant see the back of the vehicle, but is measuring the distance to the tires/axle. If the vehicle is pulling a low trailer, its almost like the trailer is not even there at all.

I have experienced what you are describing, but my vehicle never even came to a stop, it just wanted to just keep going. I've resorted to just using the ACC on the highway. Once I hit stop and go traffic, I shut it off.

The highway is basically the only place I also use ACC but I was just demonstrating it to my sister while in town.
That must be nerve wracking to have it not stop in time or at all. You've seen more incidences with it than I have.

 

[Loaded05]

The highway is basically the only place I also use ACC but I was just demonstrating it to my sister while in town.
That must be nerve wracking to have it not stop in time or at all. You've seen more incidences with it than I have.

The wife's telluride ACC is hands down a better system all together. Ive used it on multiple trips and around town and was never nervous with it doing the driving on the highway or in heavy traffic. It will even change lanes for you (if the lane is open) just by hitting the turn signal.

 

[Suprawill1]

The wife's telluride ACC is hands down a better system all together. Ive used it on multiple trips and around town and was never nervous with it doing the driving on the highway or in heavy traffic. It will even change lanes for you (if the lane is open) just by hitting the turn signal.

Nice!

 

[Mustang5L5]

I use ACC almost exclusively in stop-and-go. In fact, that particular aspect of the feature is one of the reasons I made sure to get a vehicle that had it. I probably sit in 20 miles of stop and go traffic each day. Probably thousands of miles using the feature now in traffic.

I've never had that particular situation happen to me. My ACC has been pretty good at not doing anything unexpected. Only a handful of times have i had to cover the brake ready to override, but the car did what I needed it to do. It actually does quite well at picking up cars changing lanes in front of me and slowing down in time. I really haven't had issues with it when following a trailer, or even a motorcycle (although I dislike being behind motorcycles in general and change lanes). I feel like it picks up the vehicle appropriately and keeps a good distance. Really need to use the distance setting and not just leave it stuck on the closest setting all the time.

My wife's Honda has ACC and there have been a few times that a car has merged in front of me and the car keeps accelerating. That car i've had to jump on the brakes more than a few times. I trust the setup in my Ford pretty well these days.

I've found, that when using the ACC in stop-and-go, to avoid the abrupt stops and starts, to use ECO mode. It tends to translate to a slower, more relaxed acceleration from a stop. Also, i find that using the 2nd closest distance setting works best for stop and go as it will let off the gas sooner and/or not try to accelerate from a stop too quickly. 2nd setting also stops me a little bit further back than the closest setting. If i really want a big buffer i'll use the 3rd or 4th setting but that just invites people to cut into the gap in front of me that opens up. Once we start moving I usually change it down to the closest setting.

 

[Suprawill1]

I use ACC almost exclusively in stop-and-go. In fact, that particular aspect of the feature is one of the reasons I made sure to get a vehicle that had it. I probably sit in 20 miles of stop and go traffic each day. Probably thousands of miles using the feature now in traffic.

I've never had that particular situation happen to me. My ACC has been pretty good at not doing anything unexpected. Only a handful of times have i had to cover the brake ready to override, but the car did what I needed it to do. It actually does quite well at picking up cars changing lanes in front of me and slowing down in time. I really haven't had issues with it when following a trailer, or even a motorcycle (although I dislike being behind motorcycles in general and change lanes). I feel like it picks up the vehicle appropriately and keeps a good distance. Really need to use the distance setting and not just leave it stuck on the closest setting all the time.

My wife's Honda has ACC and there have been a few times that a car has merged in front of me and the car keeps accelerating. That car i've had to jump on the brakes more than a few times. I trust the setup in my Ford pretty well these days.

I've found, that when using the ACC in stop-and-go, to avoid the abrupt stops and starts, to use ECO mode. It tends to translate to a slower, more relaxed acceleration from a stop. Also, i find that using the 2nd closest distance setting works best for stop and go as it will let off the gas sooner and/or not try to accelerate from a stop too quickly. 2nd setting also stops me a little bit further back than the closest setting. If i really want a big buffer i'll use the 3rd or 4th setting but that just invites people to cut into the gap in front of me that opens up. Once we start moving I usually change it down to the closest setting.

Good to know about the ACC performance in ECO mode!
Generally, I use ACC in stop and go and on the highway. It's always been reliable except for this one incidence. As mentioned, the car in front was off center and only covered half of the width of the ST.
Not sure if that's a factor and if the ST needed both front sensors on the vehicle in question.

I also use the distance setting and agree with you on those lane jumpers getting in front of you when you leave enough space.
So much for allowing for stopping distances!

 

[Mustang5L5]

As mentioned, the car in front was off center and only covered half of the width of the ST.

One thing I do try to do is that if a car is entering my lane ahead of me is to nudge the nose of my vehicle over towards the side they are entering from to get the sensors to read their vehicle as quickly as possible. I don't know if that ultimately does anything, but what I want to try and avoid is having the sensors read open lane ahead of me. Might be why i've never had an issue.

And once in a while, if I see something stupid about to unfold in front of me, I just hit the cancel button and take over rather than hope that computer figures out what to do.

 

[Suprawill1]

One thing I do try to do is that if a car is entering my lane ahead of me is to nudge the nose of my vehicle over towards the side they are entering from to get the sensors to read their vehicle as quickly as possible. I don't know if that ultimately does anything, but what I want to try and avoid is having the sensors read open lane ahead of me. Might be why i've never had an issue.

And once in a while, if I see something stupid about to unfold in front of me, I just hit the cancel button and take over rather than hope that computer figures out what to do.

Yes, I usually have my run of preventative measures also. Weird thing is, I was completely stopped and so was the vehicle ahead of me. When ACC first stops, it counts off about 4 seconds and then rests in "stopped" mode.
Right as it hit the 4 second mark, it took off like nothing was there. Good thing I'm not an on the road texter, I would have had a rude awakening!