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1 Posts

Have anyone ever experienced The FCM activating with no reason? I was driving on The street and suddenly The breaks were activated without any reason, and without any warning. There was no car infront of me, no scooter, no pedestrians, it was a straight stress, but it suddenly breaks The car for a fraction of second. No damage was caused, but The fright was huge.
It already happened 4 times but The dealers say it is functioning perfectly.
The warning alarm pops up with no reason three or more times during a short drive of 10 minutes.
Have anyone had this scary experience, and got The feedback that it is normal?

Am I delusioning on thinking this is malfunctioning?

Super Moderator
508 Posts
I think there was a recall in certain areas to correct this problem.

No you are not delusional, it's been documented and it could prove to be dangerous.

631 Posts
Hi and welcome to the forums. As noted in another thread here, there are a plethora of conditions which prevent the FCM system from activating. Here is a list from the Technical Manual:

  • In the following situations, the system provides neither control nor alarming.
    1. When a vehicle or a pedestrian suddenly cuts in front of your vehicle.
    2. When the distance from a vehicle or a pedestrian in front is extremely short.
    3. To an oncoming vehicle.
    4. On vehicles equipped with CVT, when the selector lever is in the "P" (PARK) or "R" (REVERSE) position. On vehicles equipped with M/T, when the gearshift lever is in the "R" (REVERSE) position.
    5. When the FCM has detected a problem in the system.
  • If the ASC is deactivated, the FCM braking function will not operate.
  • The forward collision warning function and/or the FCM braking function may not activate in the following situations.
    1. When a vehicle suddenly appears just in front of your vehicle.
    2. When a vehicle cuts in front of your vehicle very closely.
    3. When the vehicle in front is offset to the left or right.
    4. When the vehicle in front is towing a trailer.
    5. A freight trailer that is not carrying a container.
    6. The vehicle has a protruding load from the carrier.
    7. The vehicle has a low vehicle height.
    8. The vehicle has an extremely high ground clearance.
    9. When a vehicle in front is extremely dirty.
    10. When a vehicle in front is covered with snow.
    11. When a vehicle in front has a large glass surface.
    12. When a vehicle in front does not have reflectors (lamp reflector) or the position of the reflector is low.
    13. When a vehicle in front is a car carrier or a similar shaped vehicle.
    14. When there is a different object near the vehicle.
    15. When driving on a road with many and successive curves, including when passing their entrances and outlets.
    16. When accelerating and decelerating quickly.
    17. When the system recognises driver’s steering, accelerating, braking or gear shifting actions as evasive actions to avoid collision.
    18. When driving on a road with steep and alternating up and down slopes.
    19. When driving on a slippery road covered by rain water, snow, ice etc.
    20. When a road surface is surging, and there is unevenness.
    21. When driving in dark areas, such as in a tunnel or at night.
    22. When your vehicle changed lanes, and your vehicle approached immediately behind the vehicle in front.
    23. During a certain time after your vehicle turns left or right.
    24. When you are carrying extremely heavy loads in the rear seats or luggage area.
    25. After the engine has been running for an extended period of time.
    26. When using a windscreen washer.
    27. If windscreen wipers are not MITSUBISHI MOTORS GENUINE parts or equivalent.
    28. When the sensor becomes extremely hot or cold.
    29. If the battery becomes weak or runs down.
    30. When the sensor is affected by strong light, such as direct sunlight or the headlamps of an oncoming vehicle.
    31. Under adverse weather conditions (rain, snow, sand storms, etc.)
    32. When the windscreen of the sensor portion is covered with dirt, water droplets, snow and ice, etc.
    33. When water, snow or sand on the road are extorted by the vehicle in front or an oncoming vehicle.
  • The FCM may not detect a pedestrian in certain situations. Some of these include:
    1. It the pedestrian is shorter than approximately 1 m or taller than approximately 2 m.
    2. If the pedestrian is wearing loose-fitting clothes.
    3. If part of a pedestrian’s body is hidden, such as when holding an umbrella, large bag, etc.
    4. If a pedestrian bends forward, sits or lies on the road.
    5. When a pedestrian is pushing/pulling some-thing, such as a stroller, bicycle or wheel-chair.
    6. When pedestrians gather in a group.
    7. When a pedestrian clothing appears to be nearly the same colour or brightness as its surroundings.
    8. When a pedestrian is very close to an object, such as a vehicle.
    9. When a pedestrian is in a dark area, such as at right or in a tunnel.
    10. When the pedestrian is walking fast or running.
    11. When a pedestrian suddenly rushes in front of the vehicle.
    12. When the position of a pedestrian is close to the edge of the vehicle.
  • The FCM control and alarm functions may be triggered in the following situations.
    1. When there is a structure beside the entrance of a curve and intersection.
    2. When running on a narrow iron bridge.
    3. When passing through a gate with small head or side clearances.
    4. When there are metallic objects, steps or projections on the road surface.
    5. When quickly approaching a vehicle in front to overtake it.
    6. When passing an electronic toll collection gate.
    7. When running under an overpass, an pedestrian overpass or a small tunnel.
    8. When running in Multi-storey car park.
    9. When running the road the gradient changes suddenly.
    10. When stopping very close to a wall or a vehicle in front.
    11. When passing close to the vehicle, the pedestrian or an object. When driving on the road that the vehicle in front runs in offset position from your vehicle.
    12. When passing through an area that objects may contact the vehicle, such as thick grass, tree branches, or a banner.
    13. When there are patterns on the road that may be mistaken for a vehicle or a pedestrian.
    14. When a vehicle cuts into your path in the detecting range of the sensor.
    15. When an oncoming vehicle is positioned straight ahead of your vehicle on a curved road.
    16. When passing through a plastic curtain etc.
    17. When the FCM detects a long object carried on your vehicle, such as skies or a roof carrier.
    18. When driving through fog, steam, smoke or dust.
    19. When the windscreen of the sensor portion is covered with dirt, water droplets, snow and ice, etc.
  • Turn off the system beforehand when the vehicle is placed in any of the following situations as the system can operate unexpectedly.
    1. When using an automatic car wash.
    2. When your vehicle’s wheels are driven by the engine on a lift.
    3. When your vehicle is towed or your vehicle tows another vehicle.
    4. When your vehicle is carried on a truck.
    5. When enjoying sports driving on a circuit.
    6. When your vehicle is on a chassis dynamometer or free rollers.
    7. When the tyre pressure is not proper.
    8. When installing the spare tyre for emergency.
    9. When the snow traction device (tyre chains) are attached.
    10. If the windscreen on or surrounding the sensor is cracked or scratched.
The forward collision damage mitigation braking system (FCM) measures the relative speed and the relative distance with the vehicle or the pedestrian in front of the vehicle with a sensor or radar. When judging that there is a danger of collision, it activates an alarm or the automatic brake etc. to reduce collision damage or avoid collision.

1 Posts
Has anyone had any issues in there 2021 eclipse exceed FMC not activating at all even when this function is switched on we have been to the dealership twice and it is not coming up with a fault or any code errors
Yes. Here. In my car, it's on but it doesn't show anything or do anything?! I can't also switch between far, near, etc. It just turns on and turns off if I press it long enough. Don't know what's wrong!?

3 Posts
The first post in this section. The EC must be good!
I have a UK EC 4 Auto
I don't think my FCM (Forward Collision Mitigation) system is working.
I know there s a button that sets the detection distance and turns the system on and off.

I have checked that its turned on and the detection distance is set to FAR.

When I approach other vehicles there is no Brake warning and no Auto braking as I was expecting.

The system seems to work when I have the adaptive cruise control on and it will slow and stop the car when it gets too close to other vehicles.

Can anyone tell me how the system works on their EC please.


I have the same problem,just buy it one and nothings question is:All Cross 2 have FCM?For example,Syzuki Vitara have a square box bellow radiator where is the radar,mine doesent have ....I have inside the button to set the distance but whrn I get close to car in front of me dosent do anything,no slowing down,no warning lights or sound,nothing.Is posibile to have only the button but no the sistem,just for design???
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