Mercedes-Benz GLA Series Operator's Manual page 367

Driving systems
Warning/indicator lamp Possible causes/consequences and
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The red distance warning lamp lights up while the vehicle is in motion.
* The distance to the vehicle in front is too small for the speed selected.
If there is an additional warning tone, you are approaching an obstacle at too high a speed.
Warning lamp for distance
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warning function
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Function of Active Brake Assist (
Driving safety systems
Warning/indicator lamp
Possible causes/consequences and
The yellow ABS warning lamp is lit while the engine is running.
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*ABS is malfunctioning.
If there is an additional warning tone, EBD is malfunctioning.
ABS warning lamp
Other driving systems and driving safety systems may also be malfunctioning.
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Be prepared to brake immediately.
Increase the distance.
page 166).
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Note the messages on the multifunction display.
Display messages and warning/indicator lamps 365
Solutions
Solutions