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Home > Driving your vehicle > Forward Collision-Avoidance Assist (FCA) (Front radar) > Forward Collision-Avoidance Assist malfunction and limitations

Forward Collision-Avoidance Assist malfunction and limitations

Forward Collision-Avoidance Assist malfunction

When Forward Collision-Avoidance Assist is not working properly, the ‘Check forward safety system’ warning message will appear, and the and warning lights will illuminate on the cluster. Kia recommends to visit an authorised Kia dealer/service partner.

Forward Collision-Avoidance Assist disabled

When front radar cover, bumper or sensor is covered with foreign material such as snow or rain, it can reduce the detecting performance and temporarily limit or disable Forward Collision-Avoidance Assist.

If this occurs the ‘Forward safety system disabled. Radar blocked’ warning message, and the and warning lights will illuminate on the cluster.

Forward Collision-Avoidance Assist will operate normally when snow, rain or foreign matter is removed.

If Forward Collision-Avoidance Assist does not operate normally after it is removed, have the vehicle inspected by a professional workshop. Kia recommends to visit an authorised Kia dealer/service partner.

WARNING
  • Even though the warning message or warning light does not appear on the cluster, Forward Collision-Avoidance Assist may not properly operate.

  • Forward Collision-Avoidance Assist may not properly operate in an area (e.g. open terrain), where any substance are not detected after turning ON the engine.

Limitations of Forward Collision-Avoidance Assist

Forward Collision-Avoidance Assist may not operate normally, or it may operate unexpectedly under the following circumstances:

  • The detecting sensor or the surroundings are contaminated or damaged

  • Driving in heavy rain or snow, or thick fog

  • Your vehicle is being towed

  • The vehicle in front is a bus, heavy truck, truck with a unusually shaped luggage, trailer, etc.

  • The front vehicle’s ground clearance is low or high

  • A vehicle suddenly cuts in front

  • The bumper around the front radar is impacted, damaged or the front radar is out of position

  • The temperature around the front radar is high or low

  • Driving through a tunnel or iron bridge

  • Driving in large areas where there are few vehicles or structures (i.e. desert, meadow, suburb, etc.)

  • Driving near areas containing metal substances, such as a construction zone, railroad, etc.

  • A material is near that reflects very well on the front radar, such as a guardrail, nearby vehicle, etc.

  • The vehicle in front is detected late

  • The vehicle in front is suddenly blocked by a obstacle

  • The vehicle in front suddenly changes lane or suddenly reduces speed

  • The vehicle in front is bent out of shape

  • The front vehicle’s speed is fast or slow

  • The vehicle in front steers in the opposite direction of your vehicle to avoid a collision

  • With a vehicle in front, your vehicle changes lane at low speed

  • You are departing or returning to the lane

  • You are driving unstably

  • You are on a roundabout and the vehicle in front is not detected

  • You are continuously driving in a circle

  • The vehicle in front has an unusual shape

  • The vehicle in front is driving uphill or downhill

  • Driving in a parking lot

  • Driving through a tollgate, construction area, unpaved road, partial paved road, uneven road, speed bumps, etc.

  • Driving on an incline road, curved road, etc.

  • Driving through a roadside with trees or streetlights

  • The adverse road conditions cause excessive vehicle vibrations whilst driving

  • Your vehicle height is low or high due to heavy loads, abnormal tyre pressure, etc.

  • Driving through a narrow road where trees or grass or overgrown

  • There is interference by electromagnetic waves, such as driving in an area with strong radio waves or electrical noise

Driving on a curved road

Forward Collision-Avoidance Assist may not detect other vehicles in front of you on curved roads adversely affecting the performance of the sensor.

This may result in no alarm and braking when necessary.

When driving on a curved road, you must maintain a safe braking distance, and if necessary, steer the vehicle and depress the brake pedal to reduce your driving speed in order to maintain a safe distance.

Forward Collision-Avoidance Assist may detect a vehicle in the next lane or outside the lane when driving on a curved road. If this occurs, the unnecessarily alarm the driver and apply the brake.

Always check the traffic conditions around the vehicle.

Driving on a sloped road

Forward Collision-Avoidance Assist may not detect other vehicles in front of you whilst driving uphill or downhill adversely affecting the performance of the sensors.

This may result in unnecessary alarm and braking or no alarm and braking when necessary.

Also, vehicle speed may rapidly decrease when a vehicle ahead is suddenly detected.

Always have your eyes on the road whilst driving uphill or downhill and if necessary, steer your vehicle and depress the brake pedal to reduce your driving speed in order to maintain distance.

Changing lanes

[A]: Your vehicle, [B]: Lane changing vehicle

When a vehicle moves into your lane from an adjacent lane, it cannot be detected by the sensor until it is in the sensor detection range. Forward Collision-Avoidance Assist may not immediately detect the vehicle when the vehicle changes lanes abruptly. In this case, you must maintain a safe braking distance, and if necessary, steer your vehicle and depress the brake pedal to reduce your driving speed in order to maintain a safe distance.

[A]: Your vehicle, [B]: Lane changing vehicle, [C]: Same lane vehicle

When a vehicle in front of you merges out of the lane, Forward Collision-Avoidance Assist may not immediately detect the vehicle that is now in front of you. In this case, you must maintain a safe braking distance, and if necessary, steer your vehicle and depress the brake pedal to reduce your driving speed in order to maintain a safe distance.

Detecting vehicle

If the vehicle in front of you has cargo that extends rearward from the cab, or when the vehicle in front of you has higher ground clearance, additional special attention is required. Forward Collision-Avoidance Assist may not be able to detect the cargo extending from the vehicle. In these instances, you must maintain a safe braking distance from the rearmost object, and if necessary, steer your vehicle and depress the brake pedal to reduce your driving speed in order to maintain distance.

WARNING
  • When you are towing a trailer or another vehicle, we recommend that Forward Collision-Avoidance Assist is turned off due to safety reasons.

  • Forward Collision-Avoidance Assist may operate if objects that are similar in shape or characteristics to vehicles are detected.

  • Forward Collision-Avoidance Assist does not operate on bicycles, motorcycles, or smaller wheeled objects, such as luggage bags, shopping carts, or strollers.

  • Forward Collision-Avoidance Assist may not operate normally if interfered by strong electromagnetic waves.