Mercedes-Benz SLK-Class 2012 Owners Manual - Manual (Page 139)

active message is shown in the AMG
menu in the multifunction display.
If not all conditions for automatic engine
switch-off (
Y
page 135) are fulfilled, the
Stop/Start inactive message will be
shown in the AMG menu of the
multifunction display and the frame around
the ECO symbol fades out. If this is the
case, the ECO start/stop function is not
available.
Driving
137
Driving
and
parking
Z