146 Warning/indicator lamps in the status area of the on-board computer Yellow warning or indicator lamp Red warning or indicator lamp On-board computer and displays Problem Possible causes/consequences and M Solutions The Û indicator lamp in the status area of the on-board com- puter lights up yellow. G Risk of accident The trailer's brake system is malfunctioning. Driving/braking characteristics may change. Observe the notes on trailers (see the manufacturer's separate operating instructions). X Drive on carefully. X Have the brake system checked at a qualified specialist work- shop.
Problem Possible causes/consequences and M Solutions The Û indicator lamp in the status area of the on-board com- puter lights up red. G Risk of accident The trailer's brake system is malfunctioning or the trailer is auto- matically braked. Driving/braking characteristics may change. Observe the notes on trailers (see the manufacturer's separate operating instructions). X Brake carefully and stop the vehicle, paying attention to road and traffic conditions. X Apply the parking brake. X Consult a qualified specialist workshop.