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Radar / Adaptive Cruise / Emergency Brake - Questions and Issues

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  • #46
    I do a lot of highway K's and I love it, cruise control set and it works perfectly. Even will come to a complete stop......

    I find the emergency brake a bit for temperamental, lane changing with speed can make it freak out especially if you take your foot off the accelerator.


    Sent from my iPad using Tapatalk HD

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    • #47
      Just use a big cardboard box. (Windscreen box).We did and it worked fine. Just remember for city braking you must be doing less than 30 kph and NOT touching the brake or gas and it will pull up about 10mm from the cardboard box! Quite fun.....VDUB....
      VOLKSWAGEN TECHNICIAN - 16 YEARS OF PAIN..
      VCDS CODING- FAULT DIAGNOSIS - PRE PURCHASE INSPECTIONS- REPAIRS
      9W2 BT KITS -$300 - 9W7 BT KITS - $450 - CANBUS UPGRADE $150
      BRISBANE / GOLD COAST

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      • #48
        Adaptive Cruise

        This may have been discussed before, but I can't find the thread.
        I notice that when I follow another car, using my adaptive cruise, and that car moves to the left, out of my lane, and then slows, my car brakes too, even though the road in front is clear. This is potentially very dangerous, as any vehicle following me, would not expect me to slow down quickly.
        Anybody else experience this, or do I have a faulty radar?

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        • #49
          Yes it is designed to be very conservative/pessimistic. If you very slightly move the steering wheel (a tiny amount) to the other side, the camera will then ignore the person who has just moved out of your lane. My Merc did it as well. It's not perfect technology but it's still absolutely incredible to have filtered down so quickly at such a cheap price. I won't buy a car without it now.
          2010 Mk VI GTI-Red/Manual/Detroits/Park assist/Leather/MDI/Sunroof/Bi-Xenons/Chassis Control/Elec Driver's seat/5 Door/Tint
          2009 Triumph Street Triple R Matte Blazing Orange
          1971 Mini Clubman GT

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          • #50
            Yes our GTI does the same thing. When following a motorcycle you have to be very careful, if the rider moves to the far left the radar doesn't pick them up and you could drive into them if not paying attention. But other than that it's a nice system to have.
            MY20 Golf GTI TCR
            MY20.5 LR Defender P400 HSE

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            • #51
              Thats how they all are. Its not faulty.. thats why all these features start with "assist" as its only a help...you still have to be in control....VDUB...
              VOLKSWAGEN TECHNICIAN - 16 YEARS OF PAIN..
              VCDS CODING- FAULT DIAGNOSIS - PRE PURCHASE INSPECTIONS- REPAIRS
              9W2 BT KITS -$300 - 9W7 BT KITS - $450 - CANBUS UPGRADE $150
              BRISBANE / GOLD COAST

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              • #52
                Thanks for the replies. I guess that I'll have to be more alert and pause the cruise if this situation occurs again. I'll try irossiter's fix first, that seems an easy fix.

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                • #53
                  They are also not reliable at picking up motorbikes, definitely found that in the Merc's manual but still found them 90% of the time but don't trust it. Also, don't expect it to pick up cars already stopped ahead of you, eg at traffic lights. The radar is only designed to pick things moving. My GTI is the same as the Merc. Tried both on that one at slow speed with my foot hovering over the brake! It takes a while to trust it and you soon learn whether the radar has picked up something.
                  2010 Mk VI GTI-Red/Manual/Detroits/Park assist/Leather/MDI/Sunroof/Bi-Xenons/Chassis Control/Elec Driver's seat/5 Door/Tint
                  2009 Triumph Street Triple R Matte Blazing Orange
                  1971 Mini Clubman GT

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                  • #54
                    I've had CEB activate on me a few times since I had the car (about 1 year now). On all occasion I was in heavy traffic on the way to work. Arrived at work very much awake; didn't even need the usual cup of coffee to get started. What I find often sets the system off is a car in front turning off into a side street. If I'm reasonable sure it will clear my lane before I get there I may not apply the brakes and let the car coast (DSG will apply some engine braking depending on the mode it is in). The radar of course can only see a stationary object in front; kicks in the CEB which triggers the ABS and wet undies.
                    Despite the false alarms I still like having the system rather than not. One of these days something will happen in front of me on the way home from work, when my reaction time is at it's lowest level, it could end up saving the day for me and fellow road users.

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                    • #55
                      Typo

                      I don't seem to have much problem with people moving out of my lane; it has happen on some occasion but rarely. I have noticed that more often than not the radar does not lock on stationary traffic ahead (same as irossiter's experience). Another thing to look out for is the gradient of the road; if I'm on even a slight down hill slope and the road ahead levels out, my radar will be pointing into the bitumen and not the cars in front.

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                      • #56
                        If your car slows down for a car on the left, just flick the right hand indicator to cancel the braking.

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                        • #57
                          Originally posted by vdubmotorworx View Post
                          Just use a big cardboard box. (Windscreen box).We did and it worked fine. Just remember for city braking you must be doing less than 30 kph and NOT touching the brake or gas and it will pull up about 10mm from the cardboard box! Quite fun.....VDUB....
                          This, used to try this out all the time in the family Volvo XC60... works like a charm
                          2015 Golf Mk VII R Manual | Lapiz Blue | Leather | Sunroof | Driver Assistance Package II
                          Previous:
                          2011 RENAULTsport Megane RS250 Cup Trophee | Extreme Blue | Leather RECAROs | Front Sensors | Adaptive Bi-Xenon Headlights
                          2006 Holden Astra SRi Turbo Coupe | Bold Red | Nothing else

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                          • #58
                            That's useful info. Trouble is I'm an old codger, and by the time I react to the braking, and hit the indicator, the tail gating idiot is up my rear.

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                            • #59
                              Is my &quot;City Emergency Brake&quot; function working?

                              I just picked up my new Golf TSI Highline (with Driver Assistance package) a few days ago and would like to know how I can be sure that the City Emergency Brake (CEB) function is working (without driving into a brick wall to test it!).

                              I tried driving at a cardboard box (about 1 metre wide and 1 metre tall) a few times at about 10 or 15 km/h. I tested it both with my foot on and off the accelerator. Same result each time: the car hit the box without breaking.

                              I've attached pics of my menu settings and dashboard - both indicating that Front Assist is activated.

                              Click image for larger version

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ID:	1812826Click image for larger version

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ID:	1812827

                              Does anyone know of a simple (and safe) way to confirm if this function is working?
                              I think I read someone saying that the object in front has to be moving for CEB to function. Is that right?
                              Also, does the object in front have to be as large as a car, i.e. should the car stop if, say, a child or dog runs out in front of me?

                              I've spoken to the dealership where I bought it and they've asked me to bring it in for them to look at.

                              But if anyone can provide any help that would be much appreciated!

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                              • #60
                                Interesting experience (and a little worrying) Rodmartin.

                                What did your dealership say?

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