Mazda CX-5 2018 Owner's Manual page 327

Do not rely completely on the LAS & LDWS:
The LAS & LDWS 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 LAS & LDWS is limited. Always stay on course using the steering
wheel and drive with care.
Do not use the LAS & LDWS 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.
Vehicle is driven on roads other than expressways and highways.
The tyre pressures are not adjusted to the specified pressure.
Tyres of a different specified size are used, such as an emergency spare tyre.
Heed the following cautions so that the LAS & LDWS 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.
NOTE
When the direction indicator lever is operated for a lane change, the LAS & LDWS is
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automatically disabled. The LAS & LDWS 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.