Adaptive Cruise Malfunctions - Scary
09-03-2015, 11:13 AM
#321
I love my ACC system. It's one of the reasons I bought the truck. I do have one question though.
Does anyone here happen to know if their ACC recognizes stopped cars in front of them when the adaptive cruise is active?
My ACC system works great and I have had no scares or sudden stops with it. The one thing it won't do though is recognize a stopped car in front of me that is in my lane. If I am following a car to a red light the system will slow down flawlessly. However, if I am coming up to a red light with my cruise on 30 mph and the car in front of me is already stopped when I get close the system does not see the stopped vehicle so it doesn't slow down automatically. (the little car emblem on the dash isn't there in these cases either)
Is this a flaw or the way the system is designed?
Does anyone here happen to know if their ACC recognizes stopped cars in front of them when the adaptive cruise is active?
My ACC system works great and I have had no scares or sudden stops with it. The one thing it won't do though is recognize a stopped car in front of me that is in my lane. If I am following a car to a red light the system will slow down flawlessly. However, if I am coming up to a red light with my cruise on 30 mph and the car in front of me is already stopped when I get close the system does not see the stopped vehicle so it doesn't slow down automatically. (the little car emblem on the dash isn't there in these cases either)
Is this a flaw or the way the system is designed?
Last edited by go3go3go; 09-03-2015 at 11:18 AM. Reason: spelling
09-03-2015, 11:21 AM
#322
Senior Member
I love my ACC system. It's one of the reasons I bought the truck. I do have one question though.
Does anyone here happen to know if their ACC recognizes stopped cars in front of them when the adaptive cruise is active?
My ACC system works great and I have had no scares or sudden stops with it. The one thing it won't do though is recognize a stopped car in front of me that is in my lane. If I am following a car to a red light the system will slow down flawlessly. However, if I am coming up to a red light with my cruise on 30 mph and the car in front of me is already stopped when I get close the system does not see the stopped vehicle so it doesn't slow down automatically. (the little car emblem on the dash isn't there in these cases either)
Is this a flaw or the way the system is designed?
Does anyone here happen to know if their ACC recognizes stopped cars in front of them when the adaptive cruise is active?
My ACC system works great and I have had no scares or sudden stops with it. The one thing it won't do though is recognize a stopped car in front of me that is in my lane. If I am following a car to a red light the system will slow down flawlessly. However, if I am coming up to a red light with my cruise on 30 mph and the car in front of me is already stopped when I get close the system does not see the stopped vehicle so it doesn't slow down automatically. (the little car emblem on the dash isn't there in these cases either)
Is this a flaw or the way the system is designed?
My truck is only about 2 months old and I'm hoping I got the newer code at the factory. So far I've had no issues.
09-03-2015, 11:51 AM
#323
Senior Member
I love my ACC system. It's one of the reasons I bought the truck. I do have one question though.
Does anyone here happen to know if their ACC recognizes stopped cars in front of them when the adaptive cruise is active?
My ACC system works great and I have had no scares or sudden stops with it. The one thing it won't do though is recognize a stopped car in front of me that is in my lane. If I am following a car to a red light the system will slow down flawlessly. However, if I am coming up to a red light with my cruise on 30 mph and the car in front of me is already stopped when I get close the system does not see the stopped vehicle so it doesn't slow down automatically. (the little car emblem on the dash isn't there in these cases either)
Is this a flaw or the way the system is designed?
Does anyone here happen to know if their ACC recognizes stopped cars in front of them when the adaptive cruise is active?
My ACC system works great and I have had no scares or sudden stops with it. The one thing it won't do though is recognize a stopped car in front of me that is in my lane. If I am following a car to a red light the system will slow down flawlessly. However, if I am coming up to a red light with my cruise on 30 mph and the car in front of me is already stopped when I get close the system does not see the stopped vehicle so it doesn't slow down automatically. (the little car emblem on the dash isn't there in these cases either)
Is this a flaw or the way the system is designed?
09-03-2015, 01:07 PM
#324
Special Service Bulletin 45203
I went to the largest dealer in my area after my local dealer screwed up the "update" resulting in my cruise and collision avoidance being completely disabled..for 7 weeks.
So last Monday "my new favorite dealer" fixed the cruise and collision avoidance in about two hours..but for some reason the camera mounted behind the rear view mirror went out. Strange since that seemed to have been working fine before. I asked the service advisor if there was a connection and surprisingly he said there is but he doesn't know the details.
Anyway, I'm back in this morning to have the camera replaced and "fingers crossed" it should all work out.
I was told at the beginning of this process that there is a "Special Service Bulletin" concerning this issue. I will try to find out the name/number of it while I'm here and post back.
S.
So last Monday "my new favorite dealer" fixed the cruise and collision avoidance in about two hours..but for some reason the camera mounted behind the rear view mirror went out. Strange since that seemed to have been working fine before. I asked the service advisor if there was a connection and surprisingly he said there is but he doesn't know the details.
Anyway, I'm back in this morning to have the camera replaced and "fingers crossed" it should all work out.
I was told at the beginning of this process that there is a "Special Service Bulletin" concerning this issue. I will try to find out the name/number of it while I'm here and post back.
S.
Oh and the camera problem created on Monday's visit to correct the cruise/collsion issue, was actually caused by the tech's IDS software not being the most up-to-date version when the he was working the problem. Well that and when a code is thrown it's a good idea to clear the code first before trying to do a "camera alignment" otherwise you'll get the computer equivalent of a "hog lookin' at a wris****ch"
.So the cruise/collision problem was fixed for me last Monday when the radar behind the bumper was readjusted and the cruise module codes were cleared. That's what's in Special Service Bulletin 45203. So for everybody who wanted to know what to tell their tech..that's the number. And make sure they know (especially if they haven't had to work on any 2015 F-150's computer systems yet)..to ensure they are using the very latest update to IDS.
Interesting that I drove the truck for two days with working cruise and collision avoidance but a disabled front camera. And the cruise/collision worked fine. Without the camera. I've heard a lot of folks talking about this problem and mentioning the camera. I don't think the camera had anything to do with it. I think it was totally the radar misalignment.
S.
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AbitaPro (09-04-2015)
09-03-2015, 01:34 PM
#325
I had my truck Tuesday and Wednesday to have the cruise looked at again. I mentioned the alignment issue too. I got a call back saying that everything checked out fine. The SM said that Ford basically told him this "unexpected adaptive cruise control braking: the adaptive cruise control system can occasionally detect and respond to out of path vehicles,
especially on curves,entry/exit ramps or when changing lanes." If everything else checks out fine then don't do anything else.
especially on curves,entry/exit ramps or when changing lanes." If everything else checks out fine then don't do anything else.
09-04-2015, 09:59 AM
#326
The camera is for auto high beam and lane keeping, and has nothing to do with the CA or ACC, totally different systems. These aren't Subarus!
The ACC wont do anything if a car is in your path, it only detects something it sees that is traveling. There must be a time base to it, the object in front needs to be in view for so many pulses so that it can detect if it it going the same speed as you or slowing down before it can react. This is probably why the CA in my Flex didn't go off when I hit a car in a whiteout. I saw the car but didn't have enough time to go around it, and the CA never went off. If a car pulls out in front of you close enough that CA can detect a closing speed, then it can react. I guess the object has to be moving either forwards or left and right for detection.
Just keep in mind when using ACC, it will disable the cruise below a certain speed, so if following in slow traffic with it on, be prepared as it will not slow you down below 20 or 25 MPH ( depends on the vehicle, the Fusion was 20 MPH, the Flex and MKT were 25 MPH).
The ACC wont do anything if a car is in your path, it only detects something it sees that is traveling. There must be a time base to it, the object in front needs to be in view for so many pulses so that it can detect if it it going the same speed as you or slowing down before it can react. This is probably why the CA in my Flex didn't go off when I hit a car in a whiteout. I saw the car but didn't have enough time to go around it, and the CA never went off. If a car pulls out in front of you close enough that CA can detect a closing speed, then it can react. I guess the object has to be moving either forwards or left and right for detection.
Just keep in mind when using ACC, it will disable the cruise below a certain speed, so if following in slow traffic with it on, be prepared as it will not slow you down below 20 or 25 MPH ( depends on the vehicle, the Fusion was 20 MPH, the Flex and MKT were 25 MPH).
09-07-2015, 11:36 PM
#328
One incident is one incident too much and in my book, and it is not acceptable. Sounds like you got thru it OK but what if it was someone else and all the variables for a deadly accident where there and this ACC malfunction caused such an accident? I'll just continue to avoid using ACC and wait till Ford gets it right as it looks like Ford still has yet to fully solve this problem.
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canddmeyer (09-08-2015)
09-07-2015, 11:47 PM
#329
Senior Member
Agreed.....It only takes ONE incident where the binders suddenly go on without warning and an unsuspecting driver following too close plows into your rear end....then it is anyone's guess what can happen at 60-80mph.....ask Bruce/Caitlyn Jenner about his/her multi-car accident....just luck if everyone lives through one of those, say nothing about the legal battles!!
09-08-2015, 07:51 AM
#330
One incident is one incident too much and in my book, and it is not acceptable. Sounds like you got thru it OK but what if it was someone else and all the variables for a deadly accident where there and this ACC malfunction caused such an accident? I'll just continue to avoid using ACC and wait till Ford gets it right as it looks like Ford still has yet to fully solve this problem.