These are Distance Warning Indicator or Vehicle Detection Indicator symbols. It is a warning that a vehicle in front is too close or is being approached too quickly, or that a stationary obstacle exists in the direction of travel. It is a part of some manufacturers' active cruise control systems.
How do I turn off Mercedes warning?
Usually, the quickest way to turn off an alarm on most year model Mercedes vehicles is simply to hit the switch on Your key FOB.
What does a red triangle with a car in it mean in a Mercedes?
The Mercedes red triangle with a car warning light comes on due to the Active Brake Assist function. Based on your current speed and when several seconds have passed, if Active Brake assist determines that your distance from the vehicle in front is not sufficient, the red triangle warning light will display.