Traffic Jam Assist

[lm_jo]

Hi All, as quoted, I took delivery of my new MY18 162TSI (fully loaded) in Australia last week and I can confirm that it has both ALG and TJA.

I think there is some confusion on when/how it actually works and it is different to the Audi system - we need to acknowledge that TJA operates within the limits of the ACC, our Tiguan has a 3 second stop/go function which means you will always have to manually resume if stopped for a long period.

When I tested this I was on an 80km motorway with ACC set, the traffic slowed below 60km and TJA took over by continuing to steer, the ACC remains on as does the Lane Assist with ALG, both icons remain GREEN on the dash to a complete stop... If this stop is long it still requires the driver to manually resume (same as ACC), this is done simply with a light touch of the accelerator or press the resume button on the wheel - the TJA system then continues to steer/accelerate/brake again from standstill by following the car in front.

It's a great feature, I did notice it doesn't activate on suburban roads, and seems ACC needs to be set high or needs to meet certain conditions to operate as TJA.

I hope this helps settles any concerns... Cheers!



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If that's what TJA is on a tiguan, then a member here has already managed to enable it. Check post #56.

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[Ozsko]

If that's what TJA is on a tiguan, then a member here has already managed to enable it. Check post #56.

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Have you watched the educational videos on TJA?

[lm_jo]

Have you watched the educational videos on TJA?

Yes. It does mention that the vehicle will continue after a short stop.

YouTube

It doesn't mention what happens if it's not a short stop.

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[Ozsko]

Post 56 does not fill the criteria at all. My car does what is in 56 and it is not TJA which restarts without driver intervention, the self steering I am not going to comment on except to say that it appears that the vehicle self steers. There is a Bosch video on YT showing this, it is not animated and shows it in real life though it is a few years old now.

[Aus_fas]

Yes. It does mention that the vehicle will continue after a short stop.

YouTube

It doesn't mention what happens if it's not a short stop.

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For TJA the start , stop should be automatic only after a long delay you need to push pedal. How much is the long delay I don't know.

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[Ozsko]

For TJA the start , stop should be automatic only after a long delay you need to push pedal. How much is the long delay I don't know.

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I decided to refresh my information as there is a lot of new stuff to be found out there these days.

At about 30 seconds he presses the resume button....YouTube

A short stop is mentioned....YouTube

The Bosch video (Audi) showing a real drive, note the timed 15 seconds steering requirement does not appear to be active but it never appears to show a re-start and it is two years old. My perception from this video is that the driver does not do the re-start but I could be wrong.....YouTube

A more detailed explanation....YouTube

The last time I explored all this there were very few videos showing it and what it did and I can now see that my perception was wrong. My insistence that the vehicle is totally self steering is not correct though the Bosch video does not appear to show the same behaviour and the three second time out still appears to be active in at least one of the videos.

The best video of the lot I think.....YouTube

My apologies for my insistence that TJA was not in the 2018 cars, while I am not absolutely sure I do think it might be while all along VWA are saying it isn't. Unlike the Audi the VW gives no positive indication and has no extra control to activate it so has it gone a step further than the Audi in that it happens seamlessly? None of the videos to me answer all the questions concerning re-start time out etc, the car I drove would not re-start after any period at all and I questioned this at the time.

[Ozsko]

This is interesting as it talks about two minutes between steering inputs & three second restarts....Adaptive Cruise Control with Stop and Go

[smarty]

here's a good video from skoda

ŠKODA Superb – Traffic Jam Assist - ŠKODA Storyboard

[sharp]

The best video of the lot I think.....YouTube

Thanks. I believe this link proves TJA does not remove the resume requirement. He still resumes it after brief stops.

[Ozsko]

I'll go along with that, so do we presume that TJA is in the latest cars, the dealers say so and VW says not or did according to my last conversation with them.