If you brake sharply from a speed of more than 30 mph (50 km/h) or if braking is assisted by BAS, the brake lamps flash rapidly. In this way, traffic traveling behind you is warned in an even more noticeable manner.
If you brake sharply from a speed of more than 45 mph (70 km/h) to a standstill, the hazard warning lamps are activated automatically. If the brakes are applied again, the brake lamps light up continuously. If you drive faster than 6 mph (10 km/h), the hazard warning lamps are deactivated automatically.
You can also switch off the hazard warning lamps using the hazard warning button .
BAS (Brake Assist System)
Observe the "Important safety notes"
section .
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an accident.
...
General driving tips
Important safety notes
WARNING
Always remember that you must concentrate
primarily on driving the vehicle. The driver's
concentration must always be directed
primarily at road traffic. For your o ...
Exterior spare wheel bracket
General notes
WARNING
If the spare tire is more than 6 years old or is
not the same model as the regular tires, have
the spare tire replaced with a new tire at the
nearest Mercedes-Benz Center.
...