Mercedes-Benz S-Class 2013 Owner's Manual page 368

Warning and indicator lamps in the instrument cluster
Warning/ N N Signal type
indicator
Possible causes/consequences and M M Solutions
lamp
Leave the vehicle and keep a safe distance from the vehicle until the engine
X
has cooled down.
Check the coolant level and top up the coolant, observing the warning notes
X
( page 403).
Y
If you have to top up the coolant frequently, have the engine cooling system
X
checked.
Make sure that the air supply to the engine radiator is not blocked, e.g. by
X
frozen slush.
If the coolant temperature is below 120 †, you can continue driving to the
X
nearest qualified specialist workshop.
Avoid heavy loads on the engine as you do so, e.g. driving in mountainous
X
terrain and stop-start traffic.
Hybrid system
Warning/ N N Signal type
indicator
Possible causes/consequences and M M Solutions
lamp
J
N The yellow RBS (Recuperative Brake System) warning lamp is on. In addi-
tion, a warning tone may sound.
G Risk of accident
RBS is malfunctioning. Pedal travel may be longer than usual and braking
performance may be affected. The automatic engine switch-off function may
also be deactivated.
Observe the messages in the multifunction display (
X
Drive on carefully.
X
Visit a qualified specialist workshop.
X
page 319).
Y
Z
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