2002 Volkswagen Bora V5 - 2007 Mazda 3 GT - 1998 Ford Contour Sport - 2010 Volkswagen Jetta 2.0T - 2013 Volkswagen Passat 130TDI - 2015 Ford Escape 1.5 - 2016 Subaru WRX - 2018 Volkswagen Golf R Wolfsburg Wagon
The speed can be set above 67kph and TJA works fine, why they advised it must be set under 60kph is anyone's guess. I wrote this previously and there is still stuff that looking back on it could be added....
There are many misunderstood facts on TJA.....
TJA only controls the vehicle under about 67 kph
The only thing that TJA adds to the control that ACC has is the ability to self steer for 13 second blocks under 67 kph
ACC will stop the car and restart the car within its limitations but it is not TJA because it does not have the self steer activated under 65 kph
There is no button or control to activate TJA
The only indication that TJA is active is the two green lines on the bottom of the digital dashboard
The only way to activate TJA is to have ACC & ALG activated and exceed 67 kph
If your car does not have ACTIVE LANE GUIDANCE activated then TJA is not possible in your car
Active Lane Guidance can be a activated via VCDS but TJA cannot be activated this way
TJA cannot be activated by VCDS, it requires a different approach
To activate it, first turn on ACC, turn on Active Lane Guidance, exceed 65 - 68 kph. Set ACC to the speed you want, the two guidance lines turn from orange to green and the car will self steer WHILE THE LINES remain green. As the car slows down if those two lines remain green under 67 kph then TJA is active and the car will self steer in 13 second blocks. It will also stop and start within the limitations of the system. If the vehicle comes to a stop being controlled by ACC and the car in front resumes within three seconds of your car stopping your car will automatically move off and follow the car in front. if the stop is longer than three seconds then the driver has to press resume on the steering wheel or lightly press the throttle and the car will move off with no further input from the driver. TJA will then control the car spacing from all surrounding vehicles in thirteen second blocks and then the driver has to apply some pressure to the steering wheel and the car will then self steer for another thirteen seconds.
I have found that it works well within its limitations but works best in slow processional non stopping traffic at low speeds. ACC then takes over for faster traffic and does the same Job at higher speeds and that works well on multi lane roads. ACC does not work well on single lane roads at higher speeds as it can't read the roads well enough. ACC works well on those types of roads in processional traffic so I am guessing it has some sort of follow the leader function built in to it.
Last edited by Ozsko; 16-05-2018 at 01:21 PM.
I’d rather drive the car myself to be honest. Yeah ACC is great out on the freeway, but do you really need TJA?
I find it so hard to know what I’ve set and how to change it while driving it’s actually more dangerous for me personally. Accidentally set speed limiter rather than ACC, ended up stuck doing 80kmh on Eastlink till I get shut it off.
Is there a way to disable/delete speed limiter?
i don't know why its different in the dub dub stable as the hardware is essentially the same, but in my Superb, i can activate ACC at any speed, even under 67km/h and my TJA will b active. I don't have to be travelling above 67km/h.
i do this everyday - dropping the kids off at school, lots of traffic in 40km/h zone. i activate ACC when i'm crawling and stopped, and from there on TJA does the work (steering and braking) for me.
As long as i have ACC and ALG active/on, TJA will do its thing, at any speed.
If ACC off, then ALG will actively steer the car above 65km/h - i.e. green guidance lines. below that, the guidance lines go amber and self steering stops.
MY17 Superb 162TSI, Business Grey, Tech+Comfort Pack, APR ECU+TCU Stg 1, SLA, Rieger Splitter + Side Skirts, Eibach Pro-Kit Springs, Hardrace Swaybar, TPMS
In VW land the ACC can be set to any speed above 40kph but the TJA will not activate unless the vehicle has been driven above 67kph. I had better put a proviso into that, I am relating my experience in my Tiguan which was one of the batch that came in without TJA enabled and was activated here, if other owners have a different experience with factory enabled TJA it would be good to hear about it.
In my Golf R I can activate ACC at speeds equal to or greater than 30km/h, and TJA will be activated, even if I don't reach 67km/h. I sometimes take advantage of TJA on surface streets, where the speed limit does not exceed 60km/h.
I can probably take a video with a GoPro strapped to my head if that suits.
TJA came activated from the factory. My R was built calendar week 45, 2017.
MY13 Golf GTI DSG (SOLD)| Candy White | 18" Detroits | Bi-Xenon Headlights | Street Guardian SG9665C
MY18 Golf R DSG | Indium Grey | 19" Spielbergs | DAP | Sunroof | Viofo A119v2 (front) | BlueSkySea B1W (rear)
Micro-CAN VCDS
You mean you use ACC not TJA at speeds below 60kph, by this I mean you use ACC to control your speed not to utilise the steering/lane keeping function below 60kph that TJA gives. I am trying to write a definitive description on TJA at the moment so all contributions are welcome.
No I know exactly what I mean. Both the lane guidance lines and ACC icon remain green regardless on whether I have reached 67km/h.
I used this feature just a few weeks ago when I was leaving an event and there was a long line of cars exiting the venue. Traffic was slow on surface streets and the lane markings were good enough for the camera to pick them up and enable ACC and TJA.
MY13 Golf GTI DSG (SOLD)| Candy White | 18" Detroits | Bi-Xenon Headlights | Street Guardian SG9665C
MY18 Golf R DSG | Indium Grey | 19" Spielbergs | DAP | Sunroof | Viofo A119v2 (front) | BlueSkySea B1W (rear)
Micro-CAN VCDS
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