Mercedes-Benz GLS 2020 Operator's Manual page 514

512 Display messages and warning/indicator lamps
Display messages Possible causes/consequences and
b
* The exterior lighting is malfunctioning.
Malfunction See Opera-
tor's Manual
b
* The light sensor is malfunctioning.
Automatic Headlamp Mode
Inoperative
b
* The active headlamps are malfunctioning.
Active Headlamps Inopera-
tive
b
* You are driving without low-beam headlamps.
Switch On Headlamps
Consult a qualified specialist workshop.
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Consult a qualified specialist workshop.
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Consult a qualified specialist workshop.
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Turn the light switch to the L or à position.
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M M Solutions