8 minutes ago, xman said:

 

On my Superb, it starts to accelerate if you indicate and pull out. Indicator obviously informs ACC that pulling out is probably an overtaking manoeuvre.

Yeh you would think that would be the case with the Octavia but it has the lane assist so I know I've been indicating so i don't think this is the issue 

You just have to live with it , all the cars do the same , my Superb did it. Over ride by pushing the gas 

7 hours ago, MCG1975 said:

 

Out of interest where in the myriad of menus did you find that setting?  I've got the PDF manual but short of scanning through the whole thing and having no lock with a word search I would be grateful for a nudge in the right direction...

 Yes I find the PDF manual fails to explain a lot of things.  This setting is in the “Vehicle” app, under “headlights”.

 

7 hours ago, alancha said:

I have this issue too but only intermittently.  For example, yesterday I drove down the M3 from Basingstoke to Southampton and back during the day in fairly light traffic.  All the way there ACC worked perfectly, frequently passing slower vehicles in the lane to my left, but on the way back it kept slowing down because of them.  
 

I had been wondering for some time if the radar was misaligned or had two wide a view ahead, but then I noticed for the first time that in these situations the lane assist display actually showed a white car in the neighbouring lane - as someone else has explained above.  So, my car knew that the car it was slowing down for was in the lane to my left, so had no excuse for slowing down.

 

When I got home I looked around various settings and found that the car was incorrectly set for “Driving on the right”.  If the car thinks I should be driving on the right, then it would correctly prevent me overtaking a car to my left.  But the mystery then would be why it often does allow this.  I’ve changed this setting to “Driving on the left” but haven’t had an opportunity to test it so far.

 

i'm wondering if this setting also explains why I have been finding I get flashed when using the matrix headlights on rural A roads?

 

It will take me a while to know whether this change has helped with these two problems but I will report my findings when I’m confident it’s made a difference - or not.

So the plot thickens…

 

I had the opportunity to try the car again today on a short stretch of motorway.  However, I found that it had set itself back to “Driving on the right” and wouldn’t let me change it.  I wonder if it’s badly worded (in translation from the German or Czech) and actually means “Right hand drive”, in which case it is correct after all. If so, possibly it sets this based on its knowledge of the driving rules in the country the car is in, in which case it's right that it wouldn't let me change this setting.

 

Anyway, today ACC was working correctly.  It passed slower vehicles in the lane to my left without trouble, and when I put it into a situation where it might have tried to overtake on the left it correctly refused to do so.  In this case the display showed a solid white vehicle in the lane to my right, which was also correct.  And, when it had been passing slower vehicles on the left it didn't show those vehicles on the display - which is reasonable as they weren't relevant - and this is definitely different from what I saw yesterday.

 

So this leaves the question of what was happening yesterday when it wasn’t working properly?  My suspicion, unconfirmed, is that it briefly switched to left had drive mode, where it thought it shouldn't overtake cars to my left.  I’m going to watch this closely from now on and next time it does it I’ll check the left/right driving setting mode to see if it has changed.

Is it possible to use ACC without its adaptive function? I mean as the normal cruise control.. Or is it adaptive only

2 hours ago, eksa said:

Is it possible to use ACC without its adaptive function? I mean as the normal cruise control.. Or is it adaptive only

I asked this in the Octavia 3 forum, and was assured the answer is a big No.  ACC or nothing.

 

But I was speaking with a retired Police fast response driver (an old RAF mate) about this, and he said that if you indicate before overtaking, it should override the AI of the system.  This has also been mentioned earlier in this thread.

 

HTH

 

Malcolm

1 hour ago, Baxlin said:

I asked this in the Octavia 3 forum, and was assured the answer is a big No.  ACC or nothing.

 

But I was speaking with a retired Police fast response driver (an old RAF mate) about this, and he said that if you indicate before overtaking, it should override the AI of the system.  This has also been mentioned earlier in this thread.

 

HTH

 

Malcolm

Also, gently pressing the accelerator to ‘assist’ in a speedier overtaking manoeuvre overrides the ACC too, once past the slower vehicle simply relax your foot……….with this you can get somewhat closer before you pull out too……….however, I would like to see an option to enable any slight excess speed to be shaved off in a gentle linear fashion rather than having the brakes applied, very tiresome on undulating rolling A roads?

Edited 24 June, 20214 yr by Berisford

And it is surprising how lightly you need to press the accelerator to override the AI; the indicator light in the Virtual Cockpit changes colour when on ‘manual override’.

1 hour ago, Baxlin said:

But I was speaking with a retired Police fast response driver (an old RAF mate) about this, and he said that if you indicate before overtaking, it should override the AI of the system. 

 

Yes - I discovered this too.  It’s fine if you’re initially behind the slower vehicle and need to change lane to overtake but if you’re in, say, lane 2 and there's a slower vehicle in lane 1 that you want to pass you can’t really do this as using the indicator would suggest you were going to move into lane 3.

 

Just now, Berisford said:

Also, gently pressing the accelerator to ‘assist’ in a speedier overtaking manoeuvre overrides the ACC too, once past the slower vehicle simply relax your foot……….with this you can get somewhat closer before you pull out too……….

True, and in some situations as you say, this can be useful.  But most of the time it really negates the point of ACC if everytime I pass a s”over car in the lane to my left I have to press the accelerator to get past it.

 

I'm repeating my trip down the M3 to Southampton and back this morning, so will watch closely to see what it does.  Last time it was perfect on the way south but consistently not OK on the way back.

5 hours ago, eksa said:

Is it possible to use ACC without its adaptive function? I mean as the normal cruise control.. Or is it adaptive only

 

On the Superb you can switch to speed limiter mode using the button under the cc stalk and rest your foot on the throttle pedal in a part position. Foot off and the car slows, foot to the floor overides the limiter.

 

Aquaint yourself with speed limiter mode if you have it, useful around town, in areas where ACC struggles and you may find you need to use it when ACC becomes unavailable in adverse weather conditions.

Edited 24 June, 20214 yr by xman

1 hour ago, sneal said:

And it is surprising how lightly you need to press the accelerator to override the AI; the indicator light in the Virtual Cockpit changes colour when on ‘manual override’.

I have not noticed this indicator light. My eyes are glued to the road when overtaking. 

I must try it when they return my car.

11 minutes ago, xman said:

you may find you need to use it when ACC becomes unavailable in adverse weather conditions

How bad does the weather have to be for that to occur? Do you get told in the virtual cockpit?

1 hour ago, DaveFromSydney said:

How bad does the weather have to be for that to occur? Do you get told in the virtual cockpit?

 

Heavy rain usually or a build up of snow or dirt. Last week persistent moderate to heavy drizzle on the M1 with spray from lorries and cars was enough to take my ACC offline, restored after about 15 mins, several minutes after rain ceased. Had to resort to using speed limiter.

 

An orange warning on the dash and a long bleep with a message along the lines of ACC radar sensor impaired or something, I can't remember the exact message.

 

 

Edited 24 June, 20214 yr by xman

39 minutes ago, xman said:

 

Heavy rain usually or a build up of snow or dirt. Last week persistent moderate to heavy drizzle on the M1 with spray from lorries and cars was enough to take my ACC offline, restored after about 15 mins, several minutes after rain ceased. Had to resort to using speed limiter.

 

An orange warning on the dash and a long bleep with a message along the lines of ACC radar sensor impaired or something, I can't remember the exact message.

 

 

That’s useful to know, thank you. I guess similar could occur with the Lane Assist camera, if that gets covered in spray and grime too.

Is it easy to clean, e.g. if you carried a spray bottle, or a rag?

At present I am not sure exactly where to look for both the ACC and the lane assist.

I also know I would be seriously annoyed if the front or rear parking sensors failed to prevent me from running into obstacles while parking.

 

I'm afraid it is getting more difficult to understand what is going on here.  I repeated my trip down the M3 to Southampton and back this morning.  Again, ACC worked perfectly all the way there but on the way back it was unpredictable - working correctly probably 85% of the times I passed a slower vehicle in the lane to my left, but sometimes slowing down.  On these occasions only, the Lane Assist display on the instrument panel showed a white car in the lane to my left;  when ACC worked correctly, no cars were shown in the adjacent lane.  So this is different from the behaviour seen on Tuesday, when it seemed that coming back up the M3, ACC never passed a slower car on its own.

 

Interestingly, I found a discussion of the ACC overtaking issue in the Seat forums here: https://www.seatcupra.net/forums/threads/formentor-system-errors.464758/page-16#post-4974254.  The popular theory there seems to be that it is indeed related to which side of the road the car thinks you should be driving and therefore whether you can overtake on the left or the right, which is similar to what I'd been wondering.  Someone there claims that he can repeatedly reproduce the problem on a certain stretch of the M25, suggestion that it's GPS related (presumably the car thinks that parts of the M25 are in France, or something like that!).

 

22 hours ago, alancha said:

... I found that it had set itself back to “Driving on the right” and wouldn’t let me change it.  I wonder if it’s badly worded (in translation from the German or Czech) and actually means “Right hand drive”, in which case it is correct after all. If so, possibly it sets this based on its knowledge of the driving rules in the country the car is in, in which case it's right that it wouldn't let me change this setting.

 

This is the bit that is really strange...

 

When I started the car this morning, I checked the "Driving on the right" setting and found that it had changed to "Driving on the left" (see attached image).  I hadn't changed it and, as before, it wouldn't let me change it back to "Driving on the right", even if I'd wanted to - I still don't know which is right.  It remained on "Driving on the left" all the way there and all the way back.  My conclusion is that this setting has no effect on the behaviour of ACC and probably only affects the headlights (which is reasonable as the setting is in the "Headlights" section of the settings). 

 

Also, today, both times I started the car, I saw a message in the left dial on the instrument panel, which I've also shown in an attached image.  This message said that the headlights were set for driving on the right.  I don't think I've ever seen this message before.  It's also odd, as the Infotainment screen insisted that the headlights were set for "Driving on the left".   

 

I'm really not sure what to make of all this, other than that the whole system is badly messed up.

2 hours ago, DaveFromSydney said:

Is it easy to clean, e.g. if you carried a spray bottle, or a rag?

At present I am not sure exactly where to look for both the ACC and the lane assist.

I also know I would be seriously annoyed if the front or rear parking sensors failed to prevent me from running into obstacles while parking.

 

 

The ACC radar is behind the closed off section in the centre of the front radiator grill. You just need to give that cover a wipe. Front assist requires the windscreen mounted camera too, so that needs to be clean, but is easily cleaned by the windscreen wipers.

 

Parking sensors are ultrasonic round things mounted in the front/rear bumper. If any are not working the car will let you know. Best not to poke around with these too much, careful when washing, avoid pressure washers.

 

Rear assist and blind spot monitoring use 2 radar units mounted behind the rear bumper at the two ends facing the rear. Just keep the rear bumper reasonably clean in those areas.

With thanks to alancha I have found the setting and changed my setting to read driving on the left and so far.......on the 2 journeys that I have made along the M9 here in Scotland it has worked!!!  Not once did it hesitate....so progress indeed.  

 

For the information of MCG1975 if you go to car exterier or external and select mirrors if memory serves me right it is the last option.  You have to be static though as it will not allow you to make a change whilst the vehicle is in motion.

Drove from Scotland to London and back couple of weeks ago (circa 1k miles) using ACC almost entirely, worked like a charm for me. The only incidents that come close to some of the issues others were having regarding slowing down when overtaking are a couple of times when I was overtaken in the right hand lane before they then slowed (inexplicably or otherwise) and this in turn had a knock on effect to the ACC. A wee press of the right foot sorted it out though and I suspect this worked as intended due to not wanting to undertake.

 

First time I've had ACC and I don't know if I'll ever be able to live without it!

14 hours ago, WhiskyJamJar said:

First time I've had ACC and I don't know if I'll ever be able to live without it!

This is what is so frustrating about this problem - when ACC is working properly it really is brilliant.  Like you I recently drove back from Scotland and was using it most of the time but the only a week or so later on the M3 I found it refusing to pass slower vehicles again.  I really hope they can sort this out.

On 15/03/2021 at 15:07, MCG1975 said:

So, I'm enjoying the ACC on my new Octavia as I've not had this before, and even with a manual box it's very useful.

 

However, I had a few (4-5) occasions last week during 2-3 journeys where I was on a dual carriageway, was in the right hand lane to overtake a slower vehicle and the ACC 'locked on' to the vehicle in the left lane (eg showed up as a white car not grey on the display), and braked my car as I was about to overtake - not ideal when there's someone behind you - and I only noticed due to the sudden deceleration.  It's the same as it would do if I was in the left lane and a car in the right lane was going slower, so it stops you undertaking, so all I can think that for some reason it forgets which side I can overtake on!

 

Not sure if it's linked but I also had intermittent Park distance (or something like that) control errors at this time, however the parking sensors were fine when I parked up.

 

Didn't have the issue on a similar journey today so will have to keep an eye on it, just wondering if anyone has had similar?

Please accept my ignorance,I have ordered a new vrs 4x4 but what is acc and what is its purpose?

Adaptive cruise control.

 

Rather than just keeping a set speed, the car also uses radar etc to detect the car in front and maintain a distance from and matches your car to the speed of the one in front. Ideal when traffic speeds rise and fall.

1 hour ago, Joss1733 said:

Please accept my ignorance,I have ordered a new vrs 4x4 but what is acc and what is its purpose?

 

ACC is an similar to ordinary Cruise Control but with the addition of the ‘Adaptive’ feature (hence ACC). This monitors traffic in the lane ahead of you and detects if you’re travelling faster than the vehicle in front, slowing you down to match and maintain a distance behind. That distance can be adjusted to some extent.

 

It works in conjunction with the Lane Assist so should adapt speed to traffic in the lane you’re in, not the one you are overtaking; also it should slow your car to avoid undertaking.

 

Those cars fitted with traffic sign recognition (VRS does, I believe) has the extra feature that it detects the speed limit and adapts the speed to match; think this is called Predictive ACC but not sure.

 

That’s my understanding of it, and am sure i”ll be corrected by more knowledge members if I’ve missed the mark.

After having some updates done a couple of weeks ago, after which I didn't use the car much for a while, this weekend I did two longer drives which enabled me to test ACC again.

 

Sadly, it's still not working reliably.  Yesterday, I drove all the way up the M3 & A316 from Basingstoke to Richmond and it worked perfectly all the way.  But on the way back it slowed down several times for cars to my left at first, then went back to working properly for the rest of the way.  There seems no pattern that I can identify as to when it works and when it doesn't.

 

It's really frustrating as it's just so good when it's working properly.  Of all the software glitches with the car, this is now by far the most annoying for me.

I am constrained to short local trips as we are currently under lockdown but I did a couple of test runs yesterday using cruise control to establish some MPG figures. The speeds involved were 50 and 60 km/h and the roads were sometimes narrow. I also noticed many cases of unwanted slowing when there was nothing in my path but maybe cars or bikes at the side of the road. I conclude that ACC Is really not meant for such situations. Rather it should be invoked at higher speeds on motorways and the like. And, in truth, that is all I ever wanted it for.

 

I was looking at the manual for our 2015 VW Golf Alltrack, which just has regular cruise control, and I noticed that all of the assistance tech in this Skoda (ACC, Front Assist, Autonomous Emergency Braking, Lane Assist, Rear Assist, Park Assist) was around back then as options on the Golf R wagon and perhaps the regular Golf Wagon. ACC is described there in exactly the same terms and with the same warnings and caveats as in the Skoda of today. So this tech has been around for many years and I guess it is as mature as it is going to get. So we have to get used to it and only enable it where it is appropriate.

 

However I am getting better at the workaround of just giving it a bit of accelerator which overrides the ACC's braking effect.