I bought the car new in May of this year. On two occasions the ACC has behaved abnormally. The first time I was on the M6 toll road middle lane with hardly any traffic and with the ACC on 70mph. As I was about to overtake a truck on the inside lane, the ACC braked sharply. There was nothing behind me, so no damage. The second time I was on a German autobahn on the outside (left) lane of two lanes with the cruise control on 130kph (81mph) and as I was about 3/4 metres short of a truck on the inside (right) lane the ACC again braked sharply. This time I had a vehicle behind me and a collision was only just avoided. I have googled around and found some references to a similar problem but now, when I want to use them to quote in a complaint to my Skoda dealer, I can't find them. Has anyone else on this forum experienced the same or similar problem?

Yes it has happened to me a few times, in the exact circumstances you describe - overtaking a truck.

 

Annoying, but not catastrophic. As soon as you press the accelerator, the braking stops, and in my case it has never been very hard braking, but certainly unexpected braking. If a vehicle behind comes very close to hitting you, that vehicle was travelling much too close to you.

Thanks for the confirmation. In my case, both times it was quite sharp, though not emergency stop, braking.  In any case, it shouldn't happen and Skoda should be working on eliminating the problem. I agree that the guy behind was probably too close, but unfortunately tailgaters are everywhere!

Are you sure that it didn't brake in Germany as it thought you were undertaking? Or does setting the car to RH driving instead of LH inhibit this? 

 

Mine has had the occasional false positive but I've just accelerated to cancel it. 

 

By all means take it in for a look at your dealer though. 

7 hours ago, Pete Jones said:

Thanks for the confirmation. In my case, both times it was quite sharp, though not emergency stop, braking.  In any case, it shouldn't happen and Skoda should be working on eliminating the problem. I agree that the guy behind was probably too close, but unfortunately tailgaters are everywhere!

I think “should be” is the operative phrase. Should be, but almost certainly aren’t!

disable the "undertaking" feature - it will stop u from reacting to cars in adjacent lanes.

 

Thanks a lot,

 

I have sent a copy to my dealer. Awaiting a response.

 

Cheers

On 14/10/2019 at 04:56, JR RS said:

disable the "undertaking" feature - it will stop u from reacting to cars in adjacent lanes.

 

Have noticed you say on the vcds locked thread that you say reset the driver assist after untucking the box. Explain please ? 😉 

2 hours ago, Esseesse200 said:

Have noticed you say on the vcds locked thread that you say reset the driver assist after untucking the box. Explain please ? 😉 

 

my traffic jam assist stopped workinng below 65km/h - as it used to before making the undertaking change.

after resetting the "driver assist", TJA was back to normal.

 

TJA uses lane assist (camera + acc) to function, above or below 65km/h - so by alterning the lane "detection" characteristics, i can see why TJA was affected after making the change.

good thing was everything was happy after simplying doing a soft reset on the driver assist.

16 hours ago, JR RS said:

 

my traffic jam assist stopped workinng below 65km/h - as it used to before making the undertaking change.

after resetting the "driver assist", TJA was back to normal.

 

TJA uses lane assist (camera + acc) to function, above or below 65km/h - so by alterning the lane "detection" characteristics, i can see why TJA was affected after making the change.

good thing was everything was happy after simplying doing a soft reset on the driver assist.

Ahhh ok cool no worries I don’t have tja on mine anyway 

I had this problem on mine a couple of times and took it the dealer and I believe they loaded some new software and has been ok since.