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Front assist - warning but nothing there?

Discussion in 'Leon Mk3 (2012-2020)' started by BoomerBoom, Jul 20, 2018.

  1. BoomerBoom

    BoomerBoom Active Member

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    I the last couple of weeks I've had a couple of red icons and audible alerts, with one today but no braking action. Each time scared the c**p out of me at the time - because the road ahead was completely empty!

    Both times I was on a fast and bendy A road, not pushing hard but at a relaxed and comfortable pace.

    Afterward I couldn't decide if the car saw the opposite verge of an oncoming bend, a large insect had hit the sensor or I'm encountering invisible hazards that can only be seen by radar?

    Is it just the hot weather, is anyone else getting ghost alerts?
     
  2. Sochaux

    Sochaux Active Member

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    Not sure what the Front Assist actually does if I’m being honest.

    I put a plastic cone in front of my car and got up to about 15mph and my car didn’t break, it just pushed the cone forward.
     
    nick.buchan2 likes this.
  3. Pew.

    Pew. Active Member

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    Distance warning

    If the system detects that safety is endan-
    gered by the proximity of the vehicle in front,
    it may warn the driver by means of a message
    on the instrument panel when driving at a
    speed of between approximately 60 km/h
    (37 mph) and 250 km/h (156 mph)
    ››› Fig. 184.
    The warning moment varies depending on
    the traffic situation and driver behaviour.

    Advance warning

    If the system detects a possible collision with
    the vehicle in front, it may warn the driver by
    means of an audible warning and an indica-
    tion on the instrument panel when driving at
    a speed of between approximately 30 km/h
    (18 mph) and 250 km/h (156 mph)
    ››› Fig. 184.

    The warning moment varies depending on
    the traffic situation and driver behaviour. At
    the same time, the vehicle will prepare for a
    possible emergency braking ››› .

    Critical warning

    If the driver fails to react to the advance
    warning, the system may actively intervene in
    the brakes when driving at a speed of be-
    tween approximately 30 km/h (18 mph) and
    250 km/h (156 mph), generating a brief jolt
    to warn of the imminent collision.

    Automatic braking

    If the driver also fails to react to the advance
    warning, the system may brake the vehicle
    automatically, by progressively increasing
    braking effect driving at a speed of between
    approximately 4 km/h (2.5 mph) and
    250 km/h (156 mph). By reducing speed in
    case of a possible collision, the system may
    contribute to reducing the consequences of
    an accident.

    Front assist

    If the Front Assist notices that the driver is
    not braking sufficiently in case of a collision
    hazard, the system can increase braking ef-
    fect and thus avert the collision when driving
    at a speed of between approximately 4 km/h
    (2.5 mph) and 250 km/h (156 mph). Front
    assist only acts while the brake pedal is
    pressed down hard
     
  4. k9aoc1

    k9aoc1 Active Member

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    Mine often does it on a certain bend. There is a bollard in the centre of the road and I think the sensors pick this up as in the car’s path and see it as if a collision hazard. Even does it on a frosty road. Thankfully it doesn’t apply the brakes!


    Sent from my iPad using Tapatalk
     
    BoomerBoom likes this.
  5. BoomerBoom

    BoomerBoom Active Member

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    I don't think a cone is large enough to be seen by the radar, the minimum target would be a child pedestrian I think.

    As an example (at 1:58):

     
    Lmbarrett83 likes this.
  6. R4CK5

    R4CK5 Active Member

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    Are you putting the cone in front and then setting off or driving at the stationary cone? If it's the first 1, front assist won't do Jack as it reads the speed at which you are approaching another object in the cars path. If the cone is there to begin with it has no approaching speed.

    If its the latter option then I'd hate to see the state of your front bumper lol.

    Sent from my SM-G950F using Tapatalk
     
  7. nick.buchan2

    nick.buchan2 Active Member

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    Mine regularly goes off at a couple of bends on my commute. First time it happened I jumped out of my skin! Got used to it now though...


    Sent from my iPhone using Tapatalk
     
  8. Wings988

    Wings988 Active Member

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    I've not had my Cupra activate the breaks or hazards yet but it sometimes makes a bleep and a red warning on the dash. My previous mk7 golf once applied the breaks when I was following a cycling waiting for a safe place to pass (I'm a cyclist myself so always give them room). Along time ago I had a 2002 Citroën Xsara (still dont know why i bought it as it was dull as, soon replaced by an Ibiza FR) and that had auto activating hazards and emergency brake assist (eba) so it's certainly not a new system I'd expect most cars need it to get a decent Euro NCAP rating.
     
  9. Philh46

    Philh46 Active Member

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    Pulled into work car park 3 days after buying car and it spotted a couple weeds! Applied brakes automatically and crapped myself thinking it had hit the curb!
     
  10. Orguss

    Orguss Active Member

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    Mines been set off twice now when it shouldn't, both when parking on inclines. the first time it happened i thought i'd hit something but it was just the sensor seeing the the pavement when rolling forward.
     
  11. It may be me but if feels like the older cars (like mine) this system is less sensitive, I have only had the warning come on when there is an obvious problem.

    I also seen a number of people complaining about the Active Cruise Control when you are going round a corner on a dual carriageway or Motorway as the Radar picks up the car on the inside and slows you down.
     
  12. BoomerBoom

    BoomerBoom Active Member

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    No, that's definitely not happened to me!
     

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