When Drivingi-ACTIVSENSELane-keep Assist System (Some Models)

Lane-keep Assist System (Some Models)

The lane-keep assist system alerts the driver that the vehicle may be deviating from its lane and it provides steering assistance to help the driver stay within the vehicle lanes.

The forward sensing camera (FSC) detects the white lines (yellow lines) of the vehicle lane in which the vehicle is travelling and if the system determines that the vehicle may deviate from its lane, it operates the electric power steering to assist the driver's steering operation. The system also alerts the driver by activating a lane departure warning sound, vibrating the steering wheel, and indicating an alert in the display.

Refer to Forward Sensing Camera (FSC) (Search).

 

The steering wheel operation of the lane-keep assist system has “Late” and “Early” steering assist timing functions.

For the “Late” function, the system assists the driver's steering operation if there is the possibility of the vehicle deviating from its lane.

For the “Early” function, the system assists the driver's steering operation constantly so that the vehicle stays near the centre of the vehicle lane.

The “Late” and “Early” functions can be changed (timing at which steering assist is provided) by changing the setting.

Refer to Personalisation Features (Search).

 

Do not rely completely on the lane-keep assist system:

  • The lane-keep assist system is not an automatic driving system. In addition, the system is not designed to compensate for a driver's lack of caution, and over-reliance on the system could lead to an accident.

  • The detection ability of the lane-keep assist system is limited. Always stay on course using the steering wheel and drive with care.

Do not use the lane-keep assist system in the following cases:

The system may not operate adequately according to the actual driving conditions, resulting in an accident.

  • Driving on roads with tight curves.

  • Driving under bad weather conditions (rain, fog, and snow).

  • Slippery roads such as ice or snow-bound roads.

  • Roads with heavy traffic and insufficient distance between vehicles.

  • Roads with no white (yellow) lane lines.

  • Narrow roads resulting from road construction or lane closures.

  • The vehicle is driven on a temporary lane or section with a closed lane resulting from road construction where there may be multiple white (yellow) lane lines or they are interrupted.

  • The tyre pressures are not adjusted to the specified pressure.

  • Tyres of a different specified size are used, such as an emergency spare tyre.

Close Warning

 

Heed the following cautions so that the lane-keep assist system can operate normally.

  • Do not modify the suspensions.

  • Always use wheels of the specified type and size for the front and rear wheels. Consult an expert repairer, we recommend an Authorised Mazda Repairer for tyre replacement.

Close Caution

 

  • When the direction indicator lever is operated for a lane change, the lane-keep assist system is automatically disabled. The lane-keep assist system becomes operational again when the direction indicator lever is returned and the system detects white (yellow) lane lines while the vehicle is being driven normally within its vehicle lane.

  • If the steering wheel, accelerator pedal, or brake pedal is operated abruptly and the vehicle moves close to a white (yellow) line, the system determines that the driver is making a lane change and the lane-keep assist system operation is temporarily cancelled. The lane-keep assist system becomes operational again when the system detects white (yellow) lane lines while the vehicle is being driven normally within its vehicle lane.

  • If the vehicle deviates from its lane repeatedly within a short period of time, the lane-keep assist system may not operate.

  • When white (yellow) lane lines are not detected, the lane-keep assist system does not operate.

  • Under the following conditions, the lane-keep assist system may not be able to detect white (yellow) lane lines correctly and it may not operate normally.

  • If an object placed on the instrument panel is reflected in the windscreen and picked up by the camera.

  • Heavy luggage is loaded in the luggage compartment or on the rear seat and the vehicle is tilted.

  • The tyre pressures are not adjusted to the specified pressure.

  • Tyres other than conventional tyres are equipped.

  • When the vehicle is driven on the guiding branch to or from the rest area or tollgate of a highway.

  • The white (yellow) lane lines are less visible because of dirt or fading/patchiness.

  • A vehicle in front of your vehicle is running near a white (yellow) lane line making it less visible.

  • A white (yellow) lane line is less visible because of bad weather (rain, fog, or snow).

  • The vehicle is driven on a temporary lane or section with a closed lane resulting from construction where there may be multiple white (yellow) lane lines or they are interrupted.

  • A misleading line is picked up on the road such as a temporary line for construction, or because of shade, lingering snow, or grooves filled with water.

  • The surrounding brightness suddenly changes such as when entering or exiting a tunnel.

  • The illumination of the headlights is weakened because of dirt or the optical axis is deviated.

  • The windscreen is dirty or foggy.

  • The windscreen, camera is fogged (water droplets).

  • Back-light is reflected off the road surface.

  • The road surface is wet and shiny after rain, or there are puddles on the road.

  • The shade of a guardrail parallel to a white (yellow) lane line is cast on the road.

  • The width of the driving lane is narrow (less than about 2.5 m (98 in)) or wide (more than about 4.5 m (178 in))

  • Driving on roads with tight curves.

  • The road is excessively uneven.

  • The vehicle is shaken after hitting a road bump.

  • There are two or more adjacent white (yellow) lane lines.

  • There are various road markings or lane markings of various shapes near an intersection.

Close Note
When Drivingi-ACTIVSENSELane-keep Assist System (Some Models)

System Operation

Press the lane-keep assist system switch.

The lane-keep assist system display (stand-by status) is indicated in the multi-information display, and the system goes on stand-by.

 

When the steering operation assist setting has been set to non-operational, the lane-keep assist display is not indicated.

Close Note

While the system is on stand-by, drive the vehicle in the centre of the vehicle lane. When all of the following conditions are met, the lane-keep assist system display is indicated in the multi-information display and the system becomes operational.

  • The engine is running.

  • The vehicle speed is about 60 km/h (37 mph).

  • White (yellow) lane lines are detected.

  • The driver is operating the steering wheel.

  • The driving lane is neither narrow nor wide.

 

The lane-keep assist system goes on stand-by status in the following cases:

  • The system cannot detect white (yellow) lane lines.

  • The vehicle speed is less than about 60 km/h (37 mph).

  • The ABS/TCS/DSC is operating.

  • The DSC is turned off.

  • The vehicle is making a sharp curve.

  • The vehicle is making a curve at an inadequate speed.

  • The driver takes his or her hands off the steering wheel (not holding the steering wheel).

  • Sudden acceleration/deceleration.

  • Driving on winding roads.

 

  • (When the timing of the steering assist is set to “Late”)

    • The lane-keep assist system does not operate until the system detects white (yellow) lane lines on either the left or right.

    • When the system detects a white (yellow) lane line on one side only, the system will not activate warnings for the lane line on the side that is not being detected. The warning is only for a lane deviation on the side that is being detected.

  • (When the timing of the steering assist is set to “Early”)

    • When the steering assist timing is set to “Early”, the lane-keep assist system does not operate until the system detects white (yellow) lane lines on the left and right. When the system only detects white (yellow) lane lines on either the left or right, the system only operates for a lane deviation on the side being detected.

    • The steering wheel operation assist is performed so that the vehicle remains near the centre of the driving lane, however, depending on conditions such as the road curvature, road slope and undulations, and vehicle speed, the system may not be able to keep the vehicle near the centre of the driving lane.

  • If the driver takes his or her hands off the steering wheel (not holding the steering wheel), the warning sound is activated and an alert is indicated in the multi-information display.

  • The timing at which the lane departure warning is activated and the steering wheel operation assist is performed varies.

  • The following settings for the lane-keep assist system can be changed. Refer to Personalisation Features (Search).

     

    • Steering operation assist operational/non-operational

    • Cancel sensitivity (likelihood of steering assist)

Close Note

Vehicle lane line display

When the lane-keep assist system goes from stand-by to operational status, the vehicle lane lines are indicated in the display. In the lane-keep assist display indicating the operation status, only the colour of the vehicle lane line on the side being detected changes.

(Stand-by status)

(Operational status)

Auto cancel

In the following cases, the lane-keep assist system cancels automatically and the lane-keep assist system indication (stand-by) in the multi-information display turns on. The system is enabled automatically when the lane-keep assist system operation conditions are met and the lane-keep assist system indication (operational status) turns on.

  • The temperature inside the camera is high or low.

  • The windscreen around the camera is foggy.

  • The windscreen around the camera is blocked by an obstruction, causing poor forward visibility.

Auto cancel of warning/steering assist

When the following operations are performed, the lane-keep assist system determines that the driver intends to make a lane change and the system operation is cancelled automatically. The lane-keep assist system resumes automatically after the operation.

  • The driver takes his or her hands off the steering wheel. The lane-keep assist system is designed to assist the driver's steering operation and it will resume operation automatically when the driver holds the steering wheel.

  • The steering wheel is operated abruptly.

  • The brake pedal is operated.

  • The accelerator pedal is operated.

    (To cancel the automatic sensitivity cancel function, deselect “Cancel sensitivity” in the personalisation features setting.)

  • The direction indicator lever is operated.

  • The vehicle crosses a lane line.

 

After the operation, the lane-keep assist operation may not operate for a period of 5 seconds at the most until the lane lines are detected.

Close Note
When Drivingi-ACTIVSENSELane-keep Assist System (Some Models)

System Cancelling

To cancel the lane-keep assist system, press the lane-keep assist system switch.

The lane-keep assist system OFF indication is displayed in the multi-information display.

 

  • When the ignition is switched OFF, the system status before it was turned off is maintained. For example, if the ignition is switched OFF with the lane-keep system operable, the system will be operable when the ignition is switched ON the next time.

  • In the following cases, the lane-keep assist system is cancelled automatically and the lane-keep assist system OFF indication is displayed in the multi-information display. Have your vehicle inspected at an expert repairer, we recommend an Authorised Mazda Repairer.

    • There is a malfunction in the power steering.

    • There is a malfunction in the DSC.

    • There is a malfunction in the Forward Sensing Camera (FSC).

Close Note

When the lane-keep assist system is cancelled, the lane indication in the display is not displayed.

When Drivingi-ACTIVSENSELane-keep Assist System (Some Models)

Lane-keep Assist System Warning

If the system determines that the vehicle may deviate from its lane, the lane departure warning (handle vibration, beep sound, or rumble sound*1) is activated and the direction in which the system determines that the vehicle may deviate is indicated in the multi-information display or the active driving display (vehicles with active driving display). Operate the steering wheel appropriately and steer the vehicle to the centre of the vehicle lane.

 

  • If you have set the lane departure warning sound to the beep sound/rumble sound*1 setting, the warning sound may not be heard depending on the surrounding noise conditions.

  • If you have set the lane departure warning system to the steering wheel vibrations setting, the vibration may not be felt depending on the road surface conditions.

  • The lane-keep assist system can be changed to the following settings regardless of whether the steering operation assist has been set to operational/non-operational. Always check the setting status when driving the vehicle and make setting changes if necessary.

    Refer to Personalisation Features (Search).

    • Warning activates/does not activate

      (When the setting for the steering wheel operation assist is changed to non-operational, the warnings cannot be set to not activate.)

    • The type of warning. (handle vibration/beep sound/rumble sound*1)

    • Steering wheel vibration: Strong/weak

    • Warning sound volume

  1. A rumble strip is a series of grooves in the road pavement surface positioned at specific intervals, and when the vehicle passes over it a vibration and rumble sound is produced which alerts the driver that the vehicle is departing from the lane.

    The rumble sound is a reproduction of the sound which occurs when a vehicle passes over a rumble strip.

Close Note