VCDS/OBDEleven enable traffic jam assist?

[yossarian]

Does anybody know how to enable traffic jam assist using VCDS or OBDEleven (I have OBDEleven) on a Passat 206TSI R-Line? I haven't found any instructions on here or any other forums...

[snala]

Does anybody know how to enable traffic jam assist using VCDS or OBDEleven (I have OBDEleven) on a Passat 206TSI R-Line? I haven't found any instructions on here or any other forums...

? The adaptive cruise control does this already. When it is going the car stops and starts in traffic jams by itself. Either hit resume or the accelerator if the stop is more than 3 secs and it goes again. I just change the following distance to low as well on the steering wheel control.
What is the difference between this and traffic jam assist?

[yossarian]

My understanding is that with the traffic jam assist function, it enables steering assistance (the car steering itself) at low speeds.

[chris320]

My understanding is that with the traffic jam assist function, it enables steering assistance (the car steering itself) at low speeds.

Your correct TJA allow the adaptive lane guidance to operate at lower speeds and I believe the ACC will restart after standstill after a longer duration. With ACC and Lane assist the ACC operates at low speeds (requiring manual intervention after 3 seconds of standstill). Lane assist cuts out below 35mph.

I've been looking for a way to activate TJA for sometime now but no success. If anyone is able to do this I'd be very keen to hear!

[sclyde2]

has your car got 'adaptive lane guidance'?

if you don't know, have a look in the Driver Assitance settings in the settings (not the quick-access driver assistance menu. in the settings). there will be a tickbox for adaptive lane guidance below the lane assist tickbox.

[yossarian]

Yes, I was able to enable adaptive lane guidance using my OBDEleven. It is available in the menu and works as expected.

[sclyde2]

so, does traffic jam assist work on your car then?

i thought TJA = ALG + ACC
i.e. if you have ALG (adaptive lane guidance) working, then TJA would work.

[yossarian]

No, I'm pretty certain the ALG is only active at high speed. Traffic Jam Assist enables ALG at low speed.

[DV52]

Your correct TJA allow the adaptive lane guidance to operate at lower speeds and I believe the ACC will restart after standstill after a longer duration. With ACC and Lane assist the ACC operates at low speeds (requiring manual intervention after 3 seconds of standstill). Lane assist cuts out below 35mph.

I've been looking for a way to activate TJA for sometime now but no success. If anyone is able to do this I'd be very keen to hear!

chris: Hi. I don't know the answer to your question, but I do have a suggestion that will only work if there is sufficient community participation.

As I understand, Traffic Jam assist is just a combination of Lane Assist and Adaptive Cruise Control operating together at the lower speeds. Obviously the software for this extended application needs to be in the control modules, but my reading from HERE suggests that to enable the function, a Byte/Bit needs to be set in the module @ address hexA5 (i.e. the front camera which VW calls R242 and which VCDS calls Frt Sens. Drv. Assist and OBD11 calls Front Sensors Driver Assistance System.).

So, if there is sufficient community interest in discovering the software switch for Traffic Jam Assist, we need to get the code-string from an A5 module for a car that has Traffic Jam Assist and the code-string from an A5 module for a car without Traffic Jam Assist operating. The rest is easy!

Don

edit: I've loaded the label file from the link above into the long coding helper application - but it's not helpful in identifying the pertinent Bit for TJA. Here's the Lane Assist Byte for A5 (take no notice of the code-string in the picture- I just used random numbers):



As I said above, I suspect that we will need the with/without code-strings to make sense of this matter

[Ozsko]

Does anybody know how to enable traffic jam assist using VCDS or OBDEleven (I have OBDEleven) on a Passat 206TSI R-Line? I haven't found any instructions on here or any other forums...

Ring VW and ask them why it is not enabled, the more people who do that the better. You will be put off with BS answers but pursue it because VW are simply stonewalling on the subject. Traffic Jam Assist

VWNZ have now begun updating vehicles which will be a source of the coding needs.

[yossarian]

I just used the contact form on the VW Australia website to send the following inquiry, if anybody else wants to do the same:

I recently purchased an MY17 Passat 206TSI R-Line. I am very happy with the car, and especially the advanced driver assistance features such as adaptive cruise control and lane assist. I understand the Passat is available with a traffic jam assist function in some overseas markets, and also that the closely related Skoda Superb in Australia is available with the traffic jam assist function. When will VW provide a software update to enable traffic jam assist in the Passat?

[Ozsko]

Best of luck, more people need to harass them about TJA.

[sclyde2]

As I understand, Traffic Jam assist is just a combination of Lane Assist and Adaptive Cruise Control operating together at the lower speeds....

So, if there is sufficient community interest in discovering the software switch for Traffic Jam Assist, we need to get the code-string from an A5 module for a car that has Traffic Jam Assist and the code-string from an A5 module for a car without Traffic Jam Assist operating. The rest is easy!

I think TJA apparently uses Adaptive Lane Guidance, not Lane Assist. I get the impression that the adaptive lane guidance (which keeps the car centred in the lane) is a fancier version of lane assist (which just bounces off the edges of the lane).

i have a skoda kodiaq with TJA and a B8 passat alltrack without TJA. different cars, but both MQB. Would that suffice?

I also gotta work out where i put that ross-tech cable, which i haven't used in quite a while. i certainly am a bit rusty with the VCDS stuff.

[Ozsko]

I think TJA apparently uses Adaptive Lane Guidance, not Lane Assist. I get the impression that the adaptive lane guidance (which keeps the car centred in the lane) is a fancier version of lane assist (which just bounces off the edges of the lane).

i have a skoda kodiaq with TJA and a B8 passat alltrack without TJA. different cars, but both MQB. Would that suffice?

I also gotta work out where i put that ross-tech cable, which i haven't used in quite a while. i certainly am a bit rusty with the VCDS stuff.

Yes, a bit of confusion surrounds that point.

[DV52]

I think TJA apparently uses Adaptive Lane Guidance, not Lane Assist. I get the impression that the adaptive lane guidance (which keeps the car centred in the lane) is a fancier version of lane assist (which just bounces off the edges of the lane).

i have a skoda kodiaq with TJA and a B8 passat alltrack without TJA. different cars, but both MQB. Would that suffice?

I also gotta work out where i put that ross-tech cable, which i haven't used in quite a while. i certainly am a bit rusty with the VCDS stuff.

clyde: More than happy to be corrected by your better understanding of TJA - I'm always willing to learn new stuff! I tracked-down the video below - I guess the voice-over man meant to say "adaptive" Lane Assist when describing the two driver assist functions that are used for TJA - but allowed the additional adjective to be silent in the video!

The label file that was provided in Chris's link has the complete set of long helper screens, but as I said, nearly all of the Bit descriptors are very cryptic and there appears to be nothing amongst them that's at all evocative of the term "TJA".

In an ideal world, it would be great to get code strings from two identical Passats - one with TJA and the other without TJA. But as we all know, the real world is very different to life in nirvana!

So, sure - let's start the community experiment with an Alltrack. Just make an autoscan report and post-up a copy between the "code" tags (i.e. type "[code]" - then paste the autoscan report - then type "[ /code]" (without a space between "[" and "/". If you select reply with quote on this post, you will see how this works below. Some folk like to remove the VIN - but as I was reminded recently, the VIN is prominently displayed on all VAG cars under the windscreen - for any passer-by to read. But you can omit the VIN if you want- its not important for this exercise.

Don

Paste auto scan report between code tags