2017-2019 718 Cayman – Manual

2017-2019 718 Cayman – Manual

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Driving situation - vehicle falling back fast

Fig 93: Vehicle falling back fast

A - Indicator on mirror triangle does not light up
Lane Change Assist has not yet detected the vehicle you have overtaken. There is no indication on the mirror triangle.

B - Indicator on mirror triangle does not light up
Lane Change Assist detects the vehicle falling back fast on the right (more than approx. 10 mph (15 km/h) speed difference), but it does not consider it as critical for changing lanes owing to the speed with which it is falling behind. In the example, this vehicle is in the right lane. There is no indication on the mirror triangle.

C - Indicator on mirror triangle does not light up
If the turn signal is set in driving situation B, there is still no indication on the mirror triangle.


When driving around a corner, Lane Change Assist may react to a vehicle two lanes away and the indicator on the door mirror may light up.

Lane Change Assist cannot detect vehicles in tight corners (curve radius of less than 330 ft (100 m)).

  • Take additional care when driving around bends and where there are lanes with differing widths.

Lane width

The Lane Change Assist detection area covers the two adjacent lanes (left and right) on lanes of standard width regardless of whether you are driving exactly in the middle or at the edge of the lane.

When driving on narrow lanes, this area can cover even more lanes, particularly when driving at the edge of a lane. In such situations, vehicles driving two lanes away may be detected and Lane Change Assist may switch to the information or warning stage.

Likewise, when driving on very wide lanes, vehicles in the adjacent lane may not be detected as they are outside the detection area.

Fig. 94: Lane width and detection area

Adjusting brightness of indicator in mirror triangle

The brightness of the indicator for the information and warning stage is automatically adjusted according to the ambient brightness.

The basic brightness can also be set on the multifunction display:

  1. Please see chapter "Adjusting the Lane Change Assist (LCA) display brightness on the door mirror" on page 272.

Lane Change Assist is not active while the brightness is being adjusted. The indicator only lights up briefly to aid the brightness setting.

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