Driving

ACC with LSF Conditions and Limitations

~3min read

The system may automatically shut off and the ACC indicator will come on under certain conditions. Some examples of these conditions are listed below. Other conditions may reduce some of the ACC functions.

Environmental conditions

  • Driving in bad weather (rain, fog, snow, etc.).

Roadway conditions

  • Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, reflected lights, road spray, high contrast).

Vehicle conditions

  • The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
  • An abnormal tire or wheel condition (Wrong size, varied size or construction, improperly inflated, compact spare tire, etc.).
  • The camera temperature gets too high.
  • The parking brake is applied.
  • When the lower bumper next to the fog light is dirty.
  • When the front of the vehicle tilts up due to heavy cargo in the trunk or rear seats.
  • When tire chains are installed.

ACC with LSF Conditions and Limitations

The radar sensor for ACC with LSF is shared with the collision mitigation braking systemTM (CMBSTM).

You can read about handling information for the camera equipped with this system.

Do not put a sticker on the radar sensor cover or replace the radar sensor cover. Have your vehicle checked by a dealer if you find any unusual behavior of the system (e.g., the warning message appears too frequently).

If the front of the vehicle is impacted in any of the following situations, the radar sensor may not work properly. Have your vehicle checked by a dealer:

  • The vehicle mounted onto a bump, curb, chock, embankment, etc.
  • You drive the vehicle where the water is deep.
  • Your vehicle has a frontal collision.

Detection limitations

  • A vehicle or pedestrian suddenly crosses in front of you.
  • The interval between your vehicle and the vehicle or pedestrian ahead of you is too short.
  • A vehicle cuts in front of you at a slow speed, and it brakes suddenly.
  • When you accelerate rapidly and approach the vehicle or pedestrian ahead of you at high speed.
  • The vehicle ahead of you is a motorcycle, bicycle, mobility scooter, or other small vehicle.
  • When there are animals in front of your vehicle.
  • When you drive on a curved or winding or undulating road that makes it difficult for the sensor to properly detect a vehicle or a pedestrian in front of you.
  • The speed difference between your vehicle and a vehicle or pedestrian in front of you is significantly large.
  • An oncoming vehicle suddenly comes in front of you.
  • Your vehicle abruptly crosses over in front of an oncoming vehicle.
  • When driving through a narrow iron bridge.
  • When the vehicle ahead of you brakes suddenly.
  • When the vehicle ahead of you has a unique shape.
  • When your vehicle or the vehicle ahead of you is driving on one edge of the lane.

Test yourself

A quick Honda Civic quiz: every answer comes with an explanation and a link to the manual page.