bromley

Thank you Paws4Thot. With apologies, but are you comments from personal/professional experience? Could you enlarge a bit on the circumstances, please? 🙂

Thank you very much gogo110, especially for the article. I confess most of that was way over my head 🙂 , but what it seemed to say was that the radar on one vehicle can interfere with that on another, to the extent that the "victim" vehicle' radar "sees" what is not the reflection of its own signal, but the transmitted signal of the other radar, and can react to that signal, possibly "seeing" a "ghost" image, to which the AEB system may respond unpredictably. If that is a reasonable interpretation of the article, I could well be the victim of such an event. My only hesitation in accepting that reasoning is - surely someone would have thought of, and eliminated, that possibility, before mandating radar based AEB systems for vehicles to be driven on public roads by an unsuspecting Joe Public? Under that scenario, one's only defence against the "ghost image" emergency stop phenomenon, is to disable the AEB if one is likely to encounter oncoming AEB equipped traffic which, in effect, means always! Is that really where we are, or am I misunderstanding (again 🙂) ? 😞

Thanks for your posts gogo110. Re your "two things", (1) seems very unlikely. There was nothing in front for about 500 yards, and nothing on the nearside pavement either, so my money is on it being (2). It might have been a reflection of the type you describe, as there was slow, orderly, traffic in the opposite direction, so a reflection has to be at least a possibility. However, nothing struck me as unusually large at the time. I don't remember there being one, but a double-decker bus is a distinct possibility as it's a bus route. Equally, I guess oncoming radar interference must also be possible - though it seems odd that one system should spook another. Does that require an alignment fault in the other system to cause it "dazzle" mine? It would surely, in any case, be quite a problem on twisting rural roads where an oncoming vehicle rounding a (for me) right-hand bend would "spray" all cars going the other way with its beam. Not so good as the number of cars with AEB is increasing by the minute. On that basis, reaching ones destination will become a minor miracle - with repeated involuntary stops as we each pass each other along the way! Bring back horses, I say. 🙃 Re the stamping on the gas etc. there simply wasn't time! The audio warning was loud and the braking was simultaneous with no early warnings whatever. I was too busy trying to understand what the Hell was going on to do either - even if I'd known (as I do now thanks to your post) that it's possible, besides which I was lurched forward into the seatbelt by the force of the braking, so had no real control at all until the car stopped and I'd extracted myself from the seatbelt!

Thanks. First thing I did - once I'd navigated the infotainment maze! However, wasn't at all clear on what "sensitivity" meant. Sensitivity to what? I later found it was possible to turn off Front Assist, so have been doing that since. From gogo110's post above, it seems the sensitivity setting doesn't adjust the intervention speed, but only that of the warnings. If only they would give clear instructions/explanations! 😞

Understood. Yes, I had the impression that the ABS probably kicked in with the AEB, but couldn't hear it because of the row the warning signal (which began when the braking began) was making. Manual car, in gear, so engine stalled while by the braking, and me trying to work out what the Hell had happened. This was from about 30 MPH on a relatively smooth, dry, road. It was a very unpleasant experience!

Yes you can, but I have no idea, in real world terms, what actually achieves, or how. Anyone else know? Sensitivity to what, for example?

Pax vobiscum folks! 🙂 The topic is Lane Assist, which I, personally, as stated above, find useless, and frequently irritating. I just don't like the car trying to tell me where, on the road, it "thinks" it should be, because it actually knows nothing of the road ahead except where the (often barely visible) lane markings are, whereas I can see the roadkill and the potholes etc. that I want to dodge, and the line I want to take through a bend, etc. etc. So, I turn it off. That is me. Others, inevitably will be different. I am unaware that failing to indicate to change lane on an empty road is an offence. However, that does not mean that I do not indicate to change lane when there is following, or preceding traffic. Signalling is a communication. But to communicate, there has to be a recipient. That does not mean I do not indicate right or left turns at junctions because the road is at that instant clear, because a) one slows to negotiate junctions and others, who may not be turning do not, so the actual traffic conditions can change very fast and b) there may be pedestrians or cyclists that are not initially visible on approach to the junction. But again, that is me. Driving is an observing, anticipating, thinking, and deciding activity and it is inevitable that we are all going to do it in slightly different ways. Horses for courses?

Thanks Warrior193, but this is not quite in the same league! I gather the motor trade is familiar with this defect, but most drivers seem unaware because it is an unusual, random, fault that can affect the odd vehicle of almost make or model where AEB is installed and active. This is not ABS, BTW, but Front Assist's AEB system "seeing" an imminent - but actually non-existent - collision risk and abruptly applying the maximum available mechanical braking force. Fortunately, I was only doing about 30MPH and there was no following traffic. The way the car stopped, if there had been anyone behind I think the driver would probably have a) been very, very, angry at the clown who had, apparently just jammed his brakes on the no reason, b) rear ended my car, and c) not believed me when I said the car did it all on its own! Definitely not an experience to repeat!

My apologies. It's just that I have an issue with a car, and want to remain anonymous in case it goes legal!

Absolutely none, it is a personal preference. However, I think I may have inadvertently provoked a misunderstanding. I realise I said above, in a response to your post "I really don't understand why you can't simply turn it off, and leave it off." What I should have said was " I really don't understand why one can't simply turn it off, and leave it off." The "you" was not intended to be personal, it was just sloppy English! Apologies. 🙂

Well, yes, but far easier to just turn it off! 🙂 Perhaps I wasn't quite clear on the lane change indication. If there is other traffic to inform of my intended manoeuvre, I use the indicator, but where there is no other traffic, I don't. One is expected to be aware of other traffic, and I see no point in signalling where there is none, merely to satisfy a dumb machine that has no idea whether or not there is other traffic. On that basis, I don't find Lane Assist at all useful, just an annoying distraction. Sorry! 🙂

But, be aware that speed limits get changed before sat nav. mapping catches up, so the limits the sat nav. gives are almost invariably out of date. Also, unless your sat nav. has automatic map updates (and many (most?) built in systems don't/can't do this), the mapping may be years out of date. The only reliable option is observation of the roadside speed limit signs.

Ditto. First, considering the state of our local roads, which require a degree of pothole dodging, it becomes an irritant within a few hundred yards as one seeks to dodge around them and LA keeps trying to argue! Oddly, the manual (is it permitted to mention that? 🙂) says It is ".......designed primarily for driving on the motorway". Second, the lane markings are heavily worn around home, so it gets hopelessly confused about where they have gone, and finally, there is a stretch where a single lane branches into three on approach to a roundabout: one left turn, two straight on, and it has a total nervous breakdown! 🙂 Also, if you're on a stretch of dual and want the right lane because you'll go right at the next roundabout, it goes all silly if you haven't indicated the lane change even if there is no following traffic - because Lane Assist doesn't/can't know that, can it? I really don't understand why you can't simply turn it off, and leave it off.

This is the fault where the Autonomous Emergency Braking triggers for no visible or logical reason whatever, without warning, and suddenly, brakes at maximum force to a standstill. Has anyone else experienced this on this model (or any other model), and has it been resolved, and has the reason for it been explained? I'm getting the runaround!

Just a hello. Don't want to say too much at present as I don't want to blow my cover!